From 8d3454247b9f09f500bc27ae58fed139fea593a6 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?=E5=BE=A1=E5=AE=85=E7=94=B7?= <530765310@qq.com>
Date: Tue, 8 Aug 2023 05:20:58 +0000
Subject: [PATCH 1/7] =?UTF-8?q?=E4=BF=AE=E6=AD=A3=E4=B8=BB=E9=A2=98?=
 =?UTF-8?q?=E7=89=88=E5=9C=A8=E7=A7=BB=E5=8A=A8=E7=AB=AF=E9=80=89=E9=A1=B9?=
 =?UTF-8?q?=E5=81=8F=E7=A7=BB=E9=97=AE=E9=A2=98?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

Signed-off-by: 御宅男 <530765310@qq.com>
---
 admin/css/admin.css | 8 +++++++-
 1 file changed, 7 insertions(+), 1 deletion(-)

diff --git a/admin/css/admin.css b/admin/css/admin.css
index 60703fe..732cfee 100644
--- a/admin/css/admin.css
+++ b/admin/css/admin.css
@@ -465,7 +465,13 @@ body,
 	-webkit-transition: all .3s;
 	opacity: 0;
 }
-
+@media screen and (max-width: 450px) {
+  .pearone-color .layui-form-item .layui-input-inline {
+      float: left !important;
+      width: 190px !important;
+      margin: 0 10px 0 0!important;
+  }
+}
 .select-color {
 	margin-bottom: 30px;
 }
-- 
Gitee


From 72d1743395fed8c01f23d8f2c6a2d5ff6712fd39 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?=E5=BE=A1=E5=AE=85=E7=94=B7?= <530765310@qq.com>
Date: Tue, 8 Aug 2023 07:57:18 +0000
Subject: [PATCH 2/7] =?UTF-8?q?=E4=BF=AE=E6=AD=A3=E9=80=9A=E6=A0=8F?=
 =?UTF-8?q?=E6=A8=A1=E5=BC=8F=E5=BC=82=E5=B8=B8?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

Signed-off-by: 御宅男 <530765310@qq.com>
---
 admin/css/admin.css | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/admin/css/admin.css b/admin/css/admin.css
index 732cfee..5e13a5a 100644
--- a/admin/css/admin.css
+++ b/admin/css/admin.css
@@ -172,6 +172,15 @@ body,
 	display: none;
 }
 
+@media screen and (max-width: 768px) {
+  .pear-admin.banner-layout .layui-header .layui-logo {
+      display: none;
+  }
+  .pear-admin.banner-layout .layui-header .layui-layout-left {
+      left: 0px;
+  }
+}
+
 /** 收缩布局 */
 .pear-mini .layui-side .layui-logo .title {
 	display: none;
-- 
Gitee


From f764a0b28bae6c312bbe0526d27ebc77cac6a3b0 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?=E5=BE=A1=E5=AE=85=E7=94=B7?= <530765310@qq.com>
Date: Tue, 22 Aug 2023 01:06:44 +0000
Subject: [PATCH 3/7] =?UTF-8?q?=E4=BC=98=E5=8C=96=E9=A1=B6=E9=83=A8?=
 =?UTF-8?q?=E8=8F=9C=E5=8D=95=E8=BF=87=E5=A4=9A=E9=87=87=E7=94=A8=E6=9B=B4?=
 =?UTF-8?q?=E4=BC=98=E7=9A=84=E5=B1=95=E7=8E=B0=E6=96=B9=E5=BC=8F?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

Signed-off-by: 御宅男 <530765310@qq.com>
---
 component/pear/module/menu.js | 83 ++++++++++++++++++++++-------------
 1 file changed, 53 insertions(+), 30 deletions(-)

diff --git a/component/pear/module/menu.js b/component/pear/module/menu.js
index 33cde7f..85cceba 100644
--- a/component/pear/module/menu.js
+++ b/component/pear/module/menu.js
@@ -57,31 +57,6 @@ layui.define(['table', 'jquery', 'element'], function (exports) {
 		// 处理高度
 		$("#" + opt.elem).height(option.height)
 
-		setTimeout(function () {
-			$("#" + opt.control + " .control").on("mousewheel DOMMouseScroll", function (event) {
-
-				var delta = (event.originalEvent.wheelDelta && (event.originalEvent.wheelDelta > 0 ? 1 : -1)) || // chrome & ie
-					(event.originalEvent.detail && (event.originalEvent.detail > 0 ? -1 : 1)); // firefox
-
-				if (delta > 0) {
-					for (var num = 1; num < 20; num++) {
-						setTimeout(function () {
-							if ($("#" + opt.control + " .control ul").css('left').replace("px", "") < 0) {
-								$("#" + opt.control + " .control ul").css("left", "+=2px");
-							}
-						}, 10)
-					}
-				} else if (delta < 0) {
-					if (((Number)($("#" + opt.control + " .control ul").css("left").replace("px", "")) + ($("#" + opt.control + " .control ul").width() - $("#" + opt.control + " .control").width())) > 0) {
-						for (var num = 1; num < 20; num++) {
-							setTimeout(function () {
-								$("#" + opt.control + " .control ul").css("left", "-=2px");
-							}, 10)
-						}
-					}
-				}
-			});
-		}, 1000)
 
     return new pearMenu(option);
 	}
@@ -322,7 +297,8 @@ layui.define(['table', 'jquery', 'element'], function (exports) {
 	}
 
 	function createMenuAndControl(option) {
-		var control = '<div style="width: ' + option.controlWidth + 'px;white-space: nowrap;overflow-x: scroll;overflow: hidden;" class="control"><ul class="layui-nav pear-nav-control pc layui-hide-xs" style="width: fit-content;">';
+		var control = '<div class="control"><ul class="layui-nav pear-nav-control pc layui-hide-xs" style="width: fit-content;">';
+		control+= '<li class="layui-nav-item tabdrop layui-hide" style="float:right !important;"><a href="javascript:;"><i class="layui-icon layui-icon-more" style="font-size:20px;"></i></a><dl class="layui-nav-child"></dl></li>';
 		var controlPe = '<ul class="layui-nav pear-nav-control layui-hide-sm">';
 		// 声 明 头 部
 		var menu = '<div class="layui-side-scroll ' + option.theme + '">'
@@ -551,10 +527,57 @@ layui.define(['table', 'jquery', 'element'], function (exports) {
 			rationalizeWidth = $headerControl.parent().innerWidth() - $headerControl.position().left;
 		}
 
-		if (option.controlWidth && rationalizeWidth >= option.controlWidth) {
-			rationalizeWidth = option.controlWidth;
-		}
-		$("#" + option.control + " .control").css({ "width": rationalizeWidth, "transition": "width .15s" });
+		$("#" + option.control + " .control").css({"width": rationalizeWidth});
+
+		var navobj = $("#" + option.control+' ul.pear-nav-control.pc');
+		var dropdown = $(".tabdrop", navobj);
+
+        var collection = 0;
+        var maxwidth = rationalizeWidth - 60;
+
+        var liwidth = 0;
+        //检查超过一行的标签页
+        $('.tabdrop').find('dd').each(function(){
+        	var newLI = $('<li></li>').html($(this).html());
+        	newLI.addClass('layui-nav-item');
+            newLI.attr('pear-href', $(this).attr('pear-href'));
+            newLI.attr('pear-title', $(this).attr('pear-title'));
+            newLI.attr('pear-id', $(this).attr('pear-id'));
+        	navobj.append(newLI);
+        	$(this).remove();
+
+        })
+        var litabs = navobj.find('>li').not('.tabdrop');
+
+        var totalwidth = 0;
+        litabs.each(function () {
+            totalwidth += $(this).outerWidth(true);
+        });
+
+        if (rationalizeWidth < totalwidth) {
+            litabs.each(function () {
+                liwidth += $(this).outerWidth(true);
+                if (liwidth > maxwidth) {
+                    var newDD = $('<dd></dd>').html($(this).html());
+                    newDD.attr('pear-href', $(this).attr('pear-href'));
+                    newDD.attr('pear-title', $(this).attr('pear-title'));
+                    newDD.attr('pear-id', $(this).attr('pear-id'));
+                    dropdown.find('dl').append(newDD);
+                    collection++;
+                    $(this).remove();
+                }
+            });
+            if (collection > 0) {
+                dropdown.removeClass('layui-hide');
+                if (dropdown.find('.active').length === 1) {
+                    dropdown.addClass('active');
+                } else {
+                    dropdown.removeClass('active');
+                }
+            }
+        }else {
+            dropdown.addClass('layui-hide');
+        }
 	}
 
 	function rationalizeHeaderControlWidthAuto(option){
-- 
Gitee


From b7428a8aa3d8a40a35cad3a98a5462266f829d97 Mon Sep 17 00:00:00 2001
From: ken678 <530765310@qq.com>
Date: Fri, 25 Aug 2023 10:12:43 +0800
Subject: [PATCH 4/7] =?UTF-8?q?=E5=8E=BB=E9=99=A4=E6=B2=A1=E5=BF=85?=
 =?UTF-8?q?=E8=A6=81=E7=9A=84=E8=8F=9C=E5=8D=95=E5=AE=BD=E5=BA=A6=E5=8F=82?=
 =?UTF-8?q?=E6=95=B0?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

---
 component/pear/module/admin.js | 1 -
 component/pear/module/menu.js  | 3 +--
 config/pear.config.json        | 1 -
 config/pear.config.yml         | 2 --
 4 files changed, 1 insertion(+), 6 deletions(-)

diff --git a/component/pear/module/admin.js b/component/pear/module/admin.js
index b829933..ee1d902 100644
--- a/component/pear/module/admin.js
+++ b/component/pear/module/admin.js
@@ -83,7 +83,6 @@ layui.define(['message', 'table', 'jquery', 'element', 'yaml', 'form', 'tab', 'm
 					height: '100%',
 					method: param.menu.method,
 					control: isControl(param) === 'true' || isControl(param) === true ? 'control' : false, // control
-					controlWidth: param.menu.controlWidth,
 					defaultMenu: 0,
 					accordion: param.menu.accordion,
 					url: param.menu.data,
diff --git a/component/pear/module/menu.js b/component/pear/module/menu.js
index 85cceba..7326a3c 100644
--- a/component/pear/module/menu.js
+++ b/component/pear/module/menu.js
@@ -20,7 +20,6 @@ layui.define(['table', 'jquery', 'element'], function (exports) {
 			defaultOpen: opt.defaultOpen,
 			defaultSelect: opt.defaultSelect,
 			control: opt.control,
-			controlWidth: opt.controlWidth ? opt.controlWidth : "auto",
 			defaultMenu: opt.defaultMenu,
 			accordion: opt.accordion,
 			height: opt.height,
@@ -298,7 +297,7 @@ layui.define(['table', 'jquery', 'element'], function (exports) {
 
 	function createMenuAndControl(option) {
 		var control = '<div class="control"><ul class="layui-nav pear-nav-control pc layui-hide-xs" style="width: fit-content;">';
-		control+= '<li class="layui-nav-item tabdrop layui-hide" style="float:right !important;"><a href="javascript:;"><i class="layui-icon layui-icon-more" style="font-size:20px;"></i></a><dl class="layui-nav-child"></dl></li>';
+		control+= '<li class="layui-nav-item tabdrop layui-hide" style="float:right !important;"><a href="javascript:;"><i class="layui-icon layui-icon-more layui-font-20"></i></a><dl class="layui-nav-child"></dl></li>';
 		var controlPe = '<ul class="layui-nav pear-nav-control layui-hide-sm">';
 		// 声 明 头 部
 		var menu = '<div class="layui-side-scroll ' + option.theme + '">'
diff --git a/config/pear.config.json b/config/pear.config.json
index b1dba56..2fe2cef 100644
--- a/config/pear.config.json
+++ b/config/pear.config.json
@@ -9,7 +9,6 @@
 		"accordion": true,
 		"collapse": false,
 		"control": false,
-		"controlWidth": 500,
 		"select": "10",
 		"async": true
 	},
diff --git a/config/pear.config.yml b/config/pear.config.yml
index 4b7cd70..3cfd272 100644
--- a/config/pear.config.yml
+++ b/config/pear.config.yml
@@ -16,8 +16,6 @@ menu:
   collapse: false
   ## 是否开启多系统菜单模式
   control: false
-  ## 顶部菜单宽度 PX
-  controlWidth: 500
   ## 默认选中的菜单项
   select: "10"
   ## 是否开启异步菜单，false 时 data 属性设置为静态数据，true 时为后端接口
-- 
Gitee


From 6282f2b61cae5f85a3cad5da305ee62994af9fd1 Mon Sep 17 00:00:00 2001
From: fxw <fxw7468@qq.com>
Date: Tue, 17 Oct 2023 10:31:53 +0800
Subject: [PATCH 5/7] =?UTF-8?q?perf:=20=E2=9A=A1=20admin.js=20=E4=BB=A3?=
 =?UTF-8?q?=E7=A0=81=E4=BC=98=E5=8C=96?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

---
 component/pear/module/admin.js | 325 ++++++++++++++++-----------------
 1 file changed, 158 insertions(+), 167 deletions(-)

diff --git a/component/pear/module/admin.js b/component/pear/module/admin.js
index ee1d902..e35f85c 100644
--- a/component/pear/module/admin.js
+++ b/component/pear/module/admin.js
@@ -2,7 +2,7 @@ layui.define(['message', 'table', 'jquery', 'element', 'yaml', 'form', 'tab', 'm
 	function(exports) {
 		"use strict";
 
-		var $ = layui.jquery,
+		const $ = layui.jquery,
 			form = layui.form,
 			element = layui.element,
 			yaml = layui.yaml,
@@ -12,30 +12,31 @@ layui.define(['message', 'table', 'jquery', 'element', 'yaml', 'form', 'tab', 'm
 			pearFrame = layui.frame,
 			pearTheme = layui.theme,
 			message = layui.message,
-			fullscreen=layui.fullscreen;
+			fullscreen = layui.fullscreen;
 
-		var bodyFrame;
-		var sideMenu;
-		var bodyTab;
-		var config;
-		var logout = function() {};
-		var msgInstance;
-		var body = $('body');
+		let bodyFrame;
+		let sideMenu;
+		let bodyTab;
+		let config;
+		let logout = function () {
+		};
+		let msgInstance;
+		const body = $('body');
 
-		var pearAdmin = new function() {
+		const pearAdmin = new function () {
 
-			var configType = 'yml';
-			var configPath = 'pear.config.yml';
+			let configType = 'yml';
+			let configPath = 'pear.config.yml';
 
-			this.setConfigPath = function(path) {
+			this.setConfigPath = function (path) {
 				configPath = path;
 			}
 
-			this.setConfigType = function(type) {
+			this.setConfigType = function (type) {
 				configType = type;
 			}
 
-			this.render = function(initConfig) {
+			this.render = function (initConfig) {
 				if (initConfig !== undefined) {
 					applyConfig(initConfig);
 				} else {
@@ -43,11 +44,11 @@ layui.define(['message', 'table', 'jquery', 'element', 'yaml', 'form', 'tab', 'm
 				}
 			}
 
-			this.readConfig = function() {
+			this.readConfig = function () {
 				if (configType === "yml") {
 					return yaml.load(configPath);
 				} else {
-					var data;
+					let data;
 					$.ajax({
 						url: configPath,
 						type: 'get',
@@ -61,8 +62,8 @@ layui.define(['message', 'table', 'jquery', 'element', 'yaml', 'form', 'tab', 'm
 				}
 			}
 
-			this.messageRender = function(option) {
-				var option = {
+			this.messageRender = function (option) {
+				option = {
 					elem: '.message',
 					url: option.header.message,
 					height: '250px'
@@ -70,12 +71,12 @@ layui.define(['message', 'table', 'jquery', 'element', 'yaml', 'form', 'tab', 'm
 				msgInstance = message.render(option);
 			}
 
-			this.logoRender = function(param) {
+			this.logoRender = function (param) {
 				$(".layui-logo .logo").attr("src", param.logo.image);
 				$(".layui-logo .title").html(param.logo.title);
 			}
 
-			this.menuRender = function(param) {
+			this.menuRender = function (param) {
 				sideMenu = pearMenu.render({
 					elem: 'sideMenu',
 					async: param.menu.async !== undefined ? param.menu.async : true,
@@ -88,10 +89,10 @@ layui.define(['message', 'table', 'jquery', 'element', 'yaml', 'form', 'tab', 'm
 					url: param.menu.data,
 					data: param.menu.data,
 					parseData: false,
-					change: function() {
+					change: function () {
 						compatible();
 					},
-					done: function() {
+					done: function () {
 						sideMenu.isCollapse = param.menu.collapse;
 						sideMenu.selectItem(param.menu.select);
 						pearAdmin.collapse(param);
@@ -99,9 +100,9 @@ layui.define(['message', 'table', 'jquery', 'element', 'yaml', 'form', 'tab', 'm
 				});
 			}
 
-			this.bodyRender = function(param) {
+			this.bodyRender = function (param) {
 
-				body.on("click", ".refresh", function() {
+				body.on("click", ".refresh", function () {
 					refresh();
 				})
 
@@ -116,7 +117,7 @@ layui.define(['message', 'table', 'jquery', 'element', 'yaml', 'form', 'tab', 'm
 						index: 0,
 						tabMax: param.tab.max,
 						preload: param.tab.preload,
-						closeEvent: function(id) {
+						closeEvent: function (id) {
 							sideMenu.selectItem(id);
 						},
 						data: [{
@@ -125,9 +126,9 @@ layui.define(['message', 'table', 'jquery', 'element', 'yaml', 'form', 'tab', 'm
 							title: param.tab.index.title,
 							close: false
 						}],
-						success: function(id) {
+						success: function (id) {
 							if (param.tab.session) {
-								setTimeout(function() {
+								setTimeout(function () {
 									sideMenu.selectItem(id);
 									bodyTab.positionTab();
 								}, 500)
@@ -135,7 +136,7 @@ layui.define(['message', 'table', 'jquery', 'element', 'yaml', 'form', 'tab', 'm
 						}
 					});
 
-					bodyTab.click(function(id) {
+					bodyTab.click(function (id) {
 						if (!param.tab.keepState) {
 							bodyTab.refresh(false);
 						}
@@ -143,7 +144,7 @@ layui.define(['message', 'table', 'jquery', 'element', 'yaml', 'form', 'tab', 'm
 						sideMenu.selectItem(id);
 					})
 
-					sideMenu.click(function(dom, data) {
+					sideMenu.click(function (dom, data) {
 						bodyTab.addTabOnly({
 							id: data.menuId,
 							title: data.menuTitle,
@@ -162,32 +163,32 @@ layui.define(['message', 'table', 'jquery', 'element', 'yaml', 'form', 'tab', 'm
 						height: '100%'
 					});
 
-					sideMenu.click(function(dom, data) {
+					sideMenu.click(function (dom, data) {
 						bodyFrame.changePage(data.menuUrl, true);
 						compatible()
 					})
 				}
 			}
 
-			this.keepLoad = function(param) {
+			this.keepLoad = function (param) {
 				compatible()
-				setTimeout(function() {
+				setTimeout(function () {
 					$(".loader-main").fadeOut(200);
 				}, param.other.keepLoad)
 			}
 
-			this.themeRender = function(option) {
+			this.themeRender = function (option) {
 				if (option.theme.allowCustom === false) {
 					$(".setting").remove();
 				}
-				var colorId = localStorage.getItem("theme-color");
-				var currentColor = getColorById(colorId);
+				const colorId = localStorage.getItem("theme-color");
+				const currentColor = getColorById(colorId);
 				localStorage.setItem("theme-color", currentColor.id);
 				localStorage.setItem("theme-color-color", currentColor.color);
 				localStorage.setItem("theme-color-second", currentColor.second);
 				pearTheme.changeTheme(window, isAutoHead(config));
 
-				var menu = localStorage.getItem("theme-menu");
+				let menu = localStorage.getItem("theme-menu");
 				if (menu === null) {
 					menu = option.theme.defaultMenu;
 				} else {
@@ -196,7 +197,7 @@ layui.define(['message', 'table', 'jquery', 'element', 'yaml', 'form', 'tab', 'm
 					}
 				}
 
-				var header = localStorage.getItem("theme-header");
+				let header = localStorage.getItem("theme-header");
 				if (header === null) {
 					header = option.theme.defaultHeader;
 				} else {
@@ -205,7 +206,7 @@ layui.define(['message', 'table', 'jquery', 'element', 'yaml', 'form', 'tab', 'm
 					}
 				}
 
-				var banner = localStorage.getItem("theme-banner");
+				let banner = localStorage.getItem("theme-banner");
 				if (banner === null) {
 					banner = option.theme.banner;
 				} else {
@@ -214,7 +215,7 @@ layui.define(['message', 'table', 'jquery', 'element', 'yaml', 'form', 'tab', 'm
 					}
 				}
 
-				var autoHead = localStorage.getItem("auto-head");
+				let autoHead = localStorage.getItem("auto-head");
 				if (autoHead === null) {
 					autoHead = option.other.autoHead;
 				} else {
@@ -223,7 +224,7 @@ layui.define(['message', 'table', 'jquery', 'element', 'yaml', 'form', 'tab', 'm
 					}
 				}
 
-				var muiltTab = localStorage.getItem("muilt-tab");
+				let muiltTab = localStorage.getItem("muilt-tab");
 				if (muiltTab === null) {
 					muiltTab = option.tab.enable;
 				} else {
@@ -232,7 +233,7 @@ layui.define(['message', 'table', 'jquery', 'element', 'yaml', 'form', 'tab', 'm
 					}
 				}
 
-				var control = localStorage.getItem("control");
+				let control = localStorage.getItem("control");
 				if (control === null) {
 					control = option.menu.control;
 				} else {
@@ -241,10 +242,10 @@ layui.define(['message', 'table', 'jquery', 'element', 'yaml', 'form', 'tab', 'm
 					}
 				}
 
-				var footer = localStorage.getItem("footer");
-				if( footer === null) {
+				let footer = localStorage.getItem("footer");
+				if (footer === null) {
 					footer = option.other.footer;
-				}else{
+				} else {
 					if (option.theme.allowCustom === false) {
 						footer = option.other.footer;
 					}
@@ -263,9 +264,9 @@ layui.define(['message', 'table', 'jquery', 'element', 'yaml', 'form', 'tab', 'm
 				this.footer(footer);
 			}
 
-			this.footer = function(footer){
-				var bodyDOM = $(".pear-admin .layui-body");
-				var footerDOM = $(".pear-admin .layui-footer");
+			this.footer = function (footer) {
+				const bodyDOM = $(".pear-admin .layui-body");
+				const footerDOM = $(".pear-admin .layui-footer");
 				if (footer === true || footer === "true") {
 					footerDOM.removeClass("close");
 					bodyDOM.css("bottom", footerDOM.outerHeight());
@@ -275,15 +276,15 @@ layui.define(['message', 'table', 'jquery', 'element', 'yaml', 'form', 'tab', 'm
 				}
 			}
 
-			this.bannerSkin = function(theme) {
-				var pearAdmin = $(".pear-admin");
+			this.bannerSkin = function (theme) {
+				const pearAdmin = $(".pear-admin");
 				pearAdmin.removeClass("banner-layout");
 				if (theme === true || theme === "true") {
 					pearAdmin.addClass("banner-layout");
 				}
 			}
 
-			this.collapse = function(param) {
+			this.collapse = function (param) {
 				if (param.menu.collapse) {
 					if ($(window).width() >= 768) {
 						collapse()
@@ -291,43 +292,44 @@ layui.define(['message', 'table', 'jquery', 'element', 'yaml', 'form', 'tab', 'm
 				}
 			}
 
-			this.menuSkin = function(theme) {
-				var pearAdmin = $(".pear-admin .layui-side");
+			this.menuSkin = function (theme) {
+				const pearAdmin = $(".pear-admin .layui-side");
 				pearAdmin.removeClass("light-theme");
 				pearAdmin.removeClass("dark-theme");
 				pearAdmin.addClass(theme);
 			}
 
-			this.headerSkin = function(theme) {
-				var pearAdmin = $(".pear-admin .layui-header");
+			this.headerSkin = function (theme) {
+				const pearAdmin = $(".pear-admin .layui-header");
 				pearAdmin.removeClass("light-theme");
 				pearAdmin.removeClass("dark-theme");
 				pearAdmin.addClass(theme);
 			}
 
-			this.logout = function(callback) {
+			this.logout = function (callback) {
 				logout = callback;
 			}
 
-			this.message = function(callback) {
+			this.message = function (callback) {
 				if (callback != null) {
 					msgInstance.click(callback);
 				}
 			}
 
-			this.collapseSide = function() {
+			this.collapseSide = function () {
 				collapse()
 			}
 
-			this.refreshThis = function() {
+			this.refreshThis = function () {
 				refresh()
 			}
 
-			this.refresh = function(id) {
-				$("iframe[id='"+ id +"']").attr('src', $("iframe[id='"+ id +"']").attr('src'));
+			this.refresh = function (id) {
+				const iframe = $("iframe[id='" + id + "']");
+				iframe.attr('src', iframe.attr('src'));
 			}
 
-			this.addTab = function(id, title, url) {
+			this.addTab = function (id, title, url) {
 				if (isMuiltTab(config) === "true" || isMuiltTab(config) === true) {
 					bodyTab.addTabOnly({
 						id: id,
@@ -336,79 +338,67 @@ layui.define(['message', 'table', 'jquery', 'element', 'yaml', 'form', 'tab', 'm
 						icon: null,
 						close: true
 					}, 400);
-				} else {
-					return;
 				}
 			}
 
-			this.closeTab = function(id) {
+			this.closeTab = function (id) {
 				if (isMuiltTab(config) === "true" || isMuiltTab(config) === true) {
-					pearTab.delTabByElem('content', id, function(currentId){
+					pearTab.delTabByElem('content', id, function (currentId) {
 						sideMenu.selectItem(currentId);
 					});
-				} else {
-					return;
 				}
 			}
 
-			this.closeCurrentTab = function() {
+			this.closeCurrentTab = function () {
 				if (isMuiltTab(config) === "true" || isMuiltTab(config) === true) {
-					pearTab.delCurrentTabByElem('content', function(id){
+					pearTab.delCurrentTabByElem('content', function (id) {
 						sideMenu.selectItem(id);
 					});
-				} else {
-					return;
 				}
 			}
-			
-			this.closeOtherTab = function() {
+
+			this.closeOtherTab = function () {
 				if (isMuiltTab(config) === "true" || isMuiltTab(config) === true) {
-					pearTab.delOtherTabByElem('content', function(id){
+					pearTab.delOtherTabByElem('content', function (id) {
 						sideMenu.selectItem(id);
 					});
-				} else {
-					return;
 				}
 			}
-			
-			this.closeAllTab = function() {
+
+			this.closeAllTab = function () {
 				if (isMuiltTab(config) === "true" || isMuiltTab(config) === true) {
-					pearTab.delAllTabByElem('content', function(id){
+					pearTab.delAllTabByElem('content', function (id) {
 						sideMenu.selectItem(id);
 					});
-				} else {
-					return;
 				}
 			}
 
-			this.changeTabTitle = function(id, title) {
-				pearTab.changeTabTitleById('content', id ,title);
+			this.changeTabTitle = function (id, title) {
+				pearTab.changeTabTitleById('content', id, title);
 			}
-			
-			this.changeIframe = function(id, title, url) {
-				if (isMuiltTab(config) === "true" || isMuiltTab(config) === true) {
-					return;
-				} else {
+
+			this.changeIframe = function (id, title, url) {
+				if (isMuiltTab(config) !== "true" && isMuiltTab(config) !== true) {
 					sideMenu.selectItem(id);
 					bodyFrame.changePage(url, true);
 				}
 			}
 
-			this.jump = function(id, title, url) {
+			this.jump = function (id, title, url) {
 				if (isMuiltTab(config) === "true" || isMuiltTab(config) === true) {
 					pearAdmin.addTab(id, title, url)
 				} else {
 					pearAdmin.changeIframe(id, title, url)
 				}
 			}
-			
-			this.fullScreen = function() {
+
+			this.fullScreen = function () {
 				if ($(".fullScreen").hasClass("layui-icon-screen-restore")) {
-					screenFun(2).then(function() {
+					screenFun(2).then(function () {
 						$(".fullScreen").eq(0).removeClass("layui-icon-screen-restore");
 					});
 				} else {
-					screenFun(1).then(function() {
+					screenFun(1).then(function () {
 						$(".fullScreen").eq(0).addClass("layui-icon-screen-restore");
 					});
 				}
@@ -416,7 +406,7 @@ layui.define(['message', 'table', 'jquery', 'element', 'yaml', 'form', 'tab', 'm
 		};
 
 		function refresh() {
-			var refreshA = $(".refresh a");
+			const refreshA = $(".refresh a");
 			refreshA.removeClass("layui-icon-refresh-1");
 			refreshA.addClass("layui-anim");
 			refreshA.addClass("layui-anim-rotate");
@@ -435,9 +425,9 @@ layui.define(['message', 'table', 'jquery', 'element', 'yaml', 'form', 'tab', 'm
 
 		function collapse() {
 			sideMenu.collapse();
-			var admin = $(".pear-admin");
-			var left = $(".layui-icon-spread-left")
-			var right = $(".layui-icon-shrink-right")
+			const admin = $(".pear-admin");
+			const left = $(".layui-icon-spread-left");
+			const right = $(".layui-icon-shrink-right");
 			if (admin.is(".pear-mini")) {
 				left.addClass("layui-icon-shrink-right")
 				left.removeClass("layui-icon-spread-left")
@@ -463,14 +453,14 @@ layui.define(['message', 'table', 'jquery', 'element', 'yaml', 'form', 'tab', 'm
 
 		body.on("click", ".menuSearch", function () {
 			// 过滤菜单
-			var filterHandle = function (filterData, val) {
+			const filterHandle = function (filterData, val) {
 				if (!val) return [];
-				var filteredMenus = [];
+				const filteredMenus = [];
 				filterData = $.extend(true, {}, filterData);
 				$.each(filterData, function (index, item) {
 					if (item.children && item.children.length) {
 						var children = filterHandle(item.children, val)
-						var obj = $.extend({}, item, { children: children });
+						var obj = $.extend({}, item, {children: children});
 						if (children && children.length) {
 							filteredMenus.push(obj);
 						} else if (item.title.indexOf(val) >= 0) {
@@ -482,25 +472,25 @@ layui.define(['message', 'table', 'jquery', 'element', 'yaml', 'form', 'tab', 'm
 					}
 				})
 				return filteredMenus;
-			}
+			};
 
 			// 树转路径
-			var tiledHandle = function (data) {
-				var tiledMenus = [];
-				var treeTiled = function (data, content) {
-					var path = "";
-					var separator = " / ";
+			const tiledHandle = function (data) {
+				const tiledMenus = [];
+				const treeTiled = function (data, content) {
+					let path = "";
+					const separator = " / ";
 					// 上级路径
 					if (!content) content = "";
 					$.each(data, function (index, item) {
 						if (item.children && item.children.length) {
 							path += content + item.title + separator;
-							var childPath = treeTiled(item.children, path);
+							const childPath = treeTiled(item.children, path);
 							path += childPath;
 							if (!childPath) path = ""; // 重置路径
 						} else {
 							path += content + item.title
-							tiledMenus.push({ path: path, info: item });
+							tiledMenus.push({path: path, info: item});
 							path = ""; //重置路径
 						}
 					})
@@ -509,11 +499,11 @@ layui.define(['message', 'table', 'jquery', 'element', 'yaml', 'form', 'tab', 'm
 				treeTiled(data);
 
 				return tiledMenus;
-			}
+			};
 
 			// 创建搜索列表
-			var createList = function (data) {
-				var _listHtml = '';
+			const createList = function (data) {
+				let _listHtml = '';
 				$.each(data, function (index, item) {
 					_listHtml += '<li smenu-id="' + item.info.id + '" smenu-icon="' + item.info.icon + '" smenu-url="' + item.info.href + '" smenu-title="' + item.info.title + '" smenu-type="' + item.info.type + '">';
 					_listHtml += '  <span><i style="margin-right:10px" class=" ' + item.info.icon + '"></i>' + item.path + '</span>';
@@ -521,9 +511,9 @@ layui.define(['message', 'table', 'jquery', 'element', 'yaml', 'form', 'tab', 'm
 					_listHtml += '</li>'
 				})
 				return _listHtml;
-			}
+			};
 
-			var _html = [
+			const _html = [
 				'<div class="menu-search-content">',
 				'  <div class="layui-form menu-search-input-wrapper">',
 				'    <div class=" layui-input-wrap layui-input-wrap-prefix">',
@@ -550,43 +540,43 @@ layui.define(['message', 'table', 'jquery', 'element', 'yaml', 'form', 'tab', 'm
 				move: false,
 				content: _html,
 				success: function(layero,layeridx){
-					var $layer = layero;
-					var $content = $(layero).children('.layui-layer-content');
-					var $input = $(".menu-search-input-wrapper input");
-					var $noData = $(".menu-search-no-data");
-					var $list = $(".menu-search-list");
-					var menuData = sideMenu.option.data;
+					const $layer = layero;
+					const $content = $(layero).children('.layui-layer-content');
+					const $input = $(".menu-search-input-wrapper input");
+					const $noData = $(".menu-search-no-data");
+					const $list = $(".menu-search-list");
+					const menuData = sideMenu.option.data;
 
 
 					$layer.css("border-radius", "6px");
 					$input.off("focus").focus();
 					// 搜索菜单
 					$input.off("input").on("input", debounce(function(){
-						var keywords = $input.val().trim();
-						var filteredMenus = filterHandle(menuData, keywords);
-
-						if(filteredMenus.length){
-							var tiledMenus = tiledHandle(filteredMenus);
-							var listHtml = createList(tiledMenus);
-							$noData.css("display", "none");
-							$list.html("").append(listHtml).children(":first").addClass("this")
+							const keywords = $input.val().trim();
+							const filteredMenus = filterHandle(menuData, keywords);
+
+							if(filteredMenus.length){
+								const tiledMenus = tiledHandle(filteredMenus);
+								const listHtml = createList(tiledMenus);
+								$noData.css("display", "none");
+								$list.html("").append(listHtml).children(":first").addClass("this")
 						}else{
 							$list.html("");
 							$noData.css("display", "flex");
 						}
-						var currentHeight = $(".menu-search-content").outerHeight()
-						$layer.css("height", currentHeight);
-						$content.css("height", currentHeight);
-					}, 500)
+							const currentHeight = $(".menu-search-content").outerHeight();
+							$layer.css("height", currentHeight);
+							$content.css("height", currentHeight);
+						}, 500)
 					)
 					// 搜索列表点击事件
 					$list.off("click").on("click", "li", function () {
-						var menuId = $(this).attr("smenu-id");
-						var menuUrl = $(this).attr("smenu-url");
-						var menuIcon = $(this).attr("smenu-icon");
-						var menuTitle = $(this).attr("smenu-title");
-						var menuType = $(this).attr("smenu-type");
-						var openableWindow = menuType === "1" || menuType === 1;
+						const menuId = $(this).attr("smenu-id");
+						const menuUrl = $(this).attr("smenu-url");
+						const menuIcon = $(this).attr("smenu-icon");
+						const menuTitle = $(this).attr("smenu-title");
+						const menuType = $(this).attr("smenu-type");
+						const openableWindow = menuType === "1" || menuType === 1;
 
 						if(sideMenu.isCollapse){
 							collapse();
@@ -610,13 +600,14 @@ layui.define(['message', 'table', 'jquery', 'element', 'yaml', 'form', 'tab', 'm
 					// 监听键盘事件
 					// Enter:13 Spacebar:32 UpArrow:38 DownArrow:40 Esc:27
 					$(document).off("keydown").keydown(function (e) {
+						const $menuSearchList = $(".menu-search-list li.this");
 						if (e.keyCode === 13 || e.keyCode === 32) {
 							e.preventDefault();
-							var menuId = $(".menu-search-list li.this").attr("smenu-id");
-							var menuUrl = $(".menu-search-list li.this").attr("smenu-url");
-							var menuTitle = $(".menu-search-list li.this").attr("smenu-title");
-							var menuType = $(".menu-search-list li.this").attr("smenu-type");
-							var openableWindow = menuType === "1" || menuType === 1;
+							const menuId = $menuSearchList.attr("smenu-id");
+							const menuUrl = $menuSearchList.attr("smenu-url");
+							const menuTitle = $menuSearchList.attr("smenu-title");
+							const menuType = $menuSearchList.attr("smenu-type");
+							const openableWindow = menuType === "1" || menuType === 1;
 							if (sideMenu.isCollapse) {
 								collapse();
 							}
@@ -629,8 +620,8 @@ layui.define(['message', 'table', 'jquery', 'element', 'yaml', 'form', 'tab', 'm
 							layer.close(layeridx);
 						}else if(e.keyCode === 38){
 							e.preventDefault();
-							var prevEl = $(".menu-search-list li.this").prev();
-							$(".menu-search-list li.this").removeClass("this");
+							const prevEl = $menuSearchList.prev();
+							$menuSearchList.removeClass("this");
 							if(prevEl.length !== 0){
 								prevEl.addClass("this");
 							}else{
@@ -638,8 +629,8 @@ layui.define(['message', 'table', 'jquery', 'element', 'yaml', 'form', 'tab', 'm
 							}
 						}else if(e.keyCode === 40){
 							e.preventDefault();
-							var nextEl = $(".menu-search-list li.this").next();
-							$(".menu-search-list li.this").removeClass("this");
+							const nextEl = $menuSearchList.next();
+							$menuSearchList.removeClass("this");
 							if(nextEl.length !== 0){
 								nextEl.addClass("this");
 							}else{
@@ -683,7 +674,7 @@ layui.define(['message', 'table', 'jquery', 'element', 'yaml', 'form', 'tab', 'm
 
 		body.on("click", ".setting", function() {
 
-			var menuItem =
+			let menuItem =
 				'<li class="layui-this" data-select-bgcolor="dark-theme" >' +
 				'<a href="javascript:;" data-skin="skin-blue" style="" class="clearfix full-opacity-hover">' +
 				'<div><span style="display:block; width: 20%; float: left; height: 12px; background: #28333E;"></span><span style="display:block; width: 80%; float: left; height: 12px; background: white;"></span></div>' +
@@ -699,7 +690,7 @@ layui.define(['message', 'table', 'jquery', 'element', 'yaml', 'form', 'tab', 'm
 				'</a>' +
 				'</li>';
 
-			var menuHtml =
+			const menuHtml =
 				'<div class="pearone-color">\n' +
 				'<div class="color-title">菜单风格</div>\n' +
 				'<div class="color-content">\n' +
@@ -707,7 +698,7 @@ layui.define(['message', 'table', 'jquery', 'element', 'yaml', 'form', 'tab', 'm
 				'</div>\n' +
 				'</div>';
 
-			var headItem =
+			let headItem =
 				'<li class="layui-this" data-select-header="light-theme" >' +
 				'<a href="javascript:;" data-skin="skin-blue" style="" class="clearfix full-opacity-hover">' +
 				'<div><span style="display:block; width: 20%; float: left; height: 12px; background: #28333E;"></span><span style="display:block; width: 80%; float: left; height: 12px; background: white;"></span></div>' +
@@ -723,7 +714,7 @@ layui.define(['message', 'table', 'jquery', 'element', 'yaml', 'form', 'tab', 'm
 				'</a>' +
 				'</li>';
 
-			var headHtml =
+			const headHtml =
 				'<div class="pearone-color">\n' +
 				'<div class="color-title">顶部风格</div>\n' +
 				'<div class="color-content">\n' +
@@ -731,7 +722,7 @@ layui.define(['message', 'table', 'jquery', 'element', 'yaml', 'form', 'tab', 'm
 				'</div>\n' +
 				'</div>';
 
-			var moreItem =
+			let moreItem =
 				'<div class="layui-form-item"><div class="layui-input-inline"><input type="checkbox" name="control" lay-filter="control" lay-skin="switch" lay-text="开|关"></div><span class="set-text">菜单</span></div>';
 
 			moreItem +=
@@ -746,7 +737,7 @@ layui.define(['message', 'table', 'jquery', 'element', 'yaml', 'form', 'tab', 'm
 			moreItem +=
 				'<div class="layui-form-item"><div class="layui-input-inline"><input type="checkbox" name="footer" lay-filter="footer" lay-skin="switch" lay-text="开|关"></div><span class="set-text">页脚</span></div>';
 
-			var moreHtml = '<br><div class="pearone-color">\n' +
+			const moreHtml = '<br><div class="pearone-color">\n' +
 				'<div class="color-title">更多设置</div>\n' +
 				'<div class="color-content">\n' +
 				'<form class="layui-form">\n' + moreItem + '</form>\n' +
@@ -769,9 +760,9 @@ layui.define(['message', 'table', 'jquery', 'element', 'yaml', 'form', 'tab', 'm
 
 					form.render();
 
-					var color = localStorage.getItem("theme-color");
-					var menu = localStorage.getItem("theme-menu");
-					var header = localStorage.getItem("theme-header");
+					const color = localStorage.getItem("theme-color");
+					const menu = localStorage.getItem("theme-menu");
+					const header = localStorage.getItem("theme-header");
 
 					if (color !== "null") {
 						$(".select-color-item").removeClass("layui-icon").removeClass("layui-icon-ok");
@@ -789,7 +780,7 @@ layui.define(['message', 'table', 'jquery', 'element', 'yaml', 'form', 'tab', 'm
 					}
 
 					$('#layui-layer-shade' + index).click(function() {
-						var $layero = $('#layui-layer' + index);
+						const $layero = $('#layui-layer' + index);
 						$layero.animate({
 							left: $layero.offset().left + $layero.width()
 						}, 200, function() {
@@ -858,7 +849,7 @@ layui.define(['message', 'table', 'jquery', 'element', 'yaml', 'form', 'tab', 'm
 		});
 
 		body.on('click', '[data-select-bgcolor]', function() {
-			var theme = $(this).attr('data-select-bgcolor');
+			const theme = $(this).attr('data-select-bgcolor');
 			$('[data-select-bgcolor]').removeClass("layui-this");
 			$(this).addClass("layui-this");
 			localStorage.setItem("theme-menu", theme);
@@ -866,7 +857,7 @@ layui.define(['message', 'table', 'jquery', 'element', 'yaml', 'form', 'tab', 'm
 		});
 
 		body.on('click', '[data-select-header]', function() {
-			var theme = $(this).attr('data-select-header');
+			const theme = $(this).attr('data-select-header');
 			$('[data-select-header]').removeClass("layui-this");
 			$(this).addClass("layui-this");
 			localStorage.setItem("theme-header", theme);
@@ -876,8 +867,8 @@ layui.define(['message', 'table', 'jquery', 'element', 'yaml', 'form', 'tab', 'm
 		body.on('click', '.select-color-item', function() {
 			$(".select-color-item").removeClass("layui-icon").removeClass("layui-icon-ok");
 			$(this).addClass("layui-icon").addClass("layui-icon-ok");
-			var colorId = $(".select-color-item.layui-icon-ok").attr("color-id");
-			var currentColor = getColorById(colorId);
+			const colorId = $(".select-color-item.layui-icon-ok").attr("color-id");
+			const currentColor = getColorById(colorId);
 			localStorage.setItem("theme-color", currentColor.id);
 			localStorage.setItem("theme-color-color", currentColor.color);
 			localStorage.setItem("theme-color-second", currentColor.second);
@@ -891,14 +882,14 @@ layui.define(['message', 'table', 'jquery', 'element', 'yaml', 'form', 'tab', 'm
 			pearAdmin.bodyRender(param);
 			pearAdmin.themeRender(param);
 			pearAdmin.keepLoad(param);
-			if (param.header.message != false) {
+			if (param.header.message !== false) {
 				pearAdmin.messageRender(param);
 			}
 		}
 
 		function getColorById(id) {
-			var color;
-			var flag = false;
+			let color;
+			let flag = false;
 			$.each(config.colors, function(i, value) {
 				if (value.id === id) {
 					color = value;
@@ -916,7 +907,7 @@ layui.define(['message', 'table', 'jquery', 'element', 'yaml', 'form', 'tab', 'm
 		}
 
 		function buildColorHtml() {
-			var colors = "";
+			let colors = "";
 			$.each(config.colors, function(i, value) {
 				colors += "<span class='select-color-item' color-id='" + value.id + "' style='background-color:" + value.color +
 					";'></span>";
@@ -980,9 +971,9 @@ layui.define(['message', 'table', 'jquery', 'element', 'yaml', 'form', 'tab', 'm
 		},50));
 
 		function debounce(fn, awaitTime) {
-			var timerID = null
+			let timerID = null;
 			return function () {
-				var arg = arguments[0]
+				const arg = arguments[0];
 				if (timerID) {
 					clearTimeout(timerID)
 				}
-- 
Gitee


From d617006ecacc8564983675861846b93270a62525 Mon Sep 17 00:00:00 2001
From: fxw <fxw7468@qq.com>
Date: Tue, 17 Oct 2023 13:23:33 +0800
Subject: [PATCH 6/7] =?UTF-8?q?perf:=20=E2=9A=A1=20button,card,common,cont?=
 =?UTF-8?q?ext,convert,count,cropper=E6=A8=A1=E5=9D=97=E4=BB=A3=E7=A0=81?=
 =?UTF-8?q?=E6=95=B4=E7=90=86?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

---
 component/pear/module/button.js  |  27 +-
 component/pear/module/card.js    | 111 ++--
 component/pear/module/common.js  |   6 +-
 component/pear/module/context.js |  14 +-
 component/pear/module/convert.js |  17 +-
 component/pear/module/count.js   |  26 +-
 component/pear/module/cropper.js | 881 ++++++++++++++++---------------
 7 files changed, 554 insertions(+), 528 deletions(-)

diff --git a/component/pear/module/button.js b/component/pear/module/button.js
index d77c18d..a1bb659 100644
--- a/component/pear/module/button.js
+++ b/component/pear/module/button.js
@@ -4,32 +4,33 @@ layui.define(['jquery'], function(exports) {
 	/**
 	 * Button component
 	 * */
-	var MOD_NAME = 'button',
+	const MOD_NAME = 'button',
 		$ = layui.jquery;
 
-	var button = function(opt) {
+	const button = function (opt) {
 		this.option = opt;
 	};
 
-    /**
+	/**
 	 * Button start loading
 	 * */
 	button.prototype.load = function(opt) {
-		
-		var option = {
+
+		const option = {
 			elem: opt.elem,
 			time: opt.time ? opt.time : false,
-			done: opt.done ? opt.done : function(){}
-		}
-		var text = $(option.elem).html();
-		
+			done: opt.done ? opt.done : function () {
+			}
+		};
+		const text = $(option.elem).html();
+
 		$(option.elem).html("<i class='layui-anim layui-anim-rotate layui-icon layui-anim-loop layui-icon-loading'/>");
 		
 		$(option.elem).attr("disabled", "disabled");
-		
-		var buttons = $(option.elem);
-		
-		if (option.time != "" || option.time !=false) {
+
+		const buttons = $(option.elem);
+
+		if (option.time !==false) {
 			setTimeout(function() {
 				$(option.elem).attr("disabled", false);
 				buttons.html(text);
diff --git a/component/pear/module/card.js b/component/pear/module/card.js
index 76934da..88b4961 100644
--- a/component/pear/module/card.js
+++ b/component/pear/module/card.js
@@ -1,24 +1,24 @@
 layui.define(['table', 'laypage','jquery', 'element'], function(exports) {
 	"use strict";
 
-	var MOD_NAME = 'card',
+	const MOD_NAME = 'card',
 		$ = layui.jquery,
 		element = layui.element,
 		laypage = layui.laypage;
-		
-	var _instances = {};  // 记录所有实例
-	
-	var defaultOption = {
+
+	const _instances = {};  // 记录所有实例
+
+	const defaultOption = {
 		elem: "#currentTableId",// 构建的模型
 		url: "",// 数据 url 连接
 		loading: true,//是否加载
 		limit: 0, //每页数量默认是每行数量的双倍
 		linenum: 4, //每行数量 2,3,4,6
 		currentPage: 1,//当前页
-		data:[],       //静态数据
-		limits:[],     //页码
+		data: [],       //静态数据
+		limits: [],     //页码
 		page: true, //是否分页
-		layout: ['count', 'prev', 'page', 'next','limit', 'skip'],//分页控件
+		layout: ['count', 'prev', 'page', 'next', 'limit', 'skip'],//分页控件
 		request: {
 			pageName: 'page' //页码的参数名称，默认：page
 			, limitName: 'limit' //每页数据量的参数名，默认：limit
@@ -35,31 +35,32 @@ layui.define(['table', 'laypage','jquery', 'element'], function(exports) {
 			, countName: 'count' //规定数据总数的字段名称，默认：count
 			, dataName: 'data' //规定数据列表的字段名称，默认：data
 		},
-		clickItem: function(data){},
+		clickItem: function (data) {
+		},
 		done: function () {
 
 		}
 	};
-	
-	var card = function(opt) {
+
+	const card = function (opt) {
 		_instances[opt.elem.substring(1)] = this;
 		this.reload(opt);
 	};
 	card.prototype.initOptions = function (opt) {
 		this.option = $.extend(true, {}, defaultOption, opt);
-		if (!this.option.limit || this.option.limit == 0) {
+		if (!this.option.limit || this.option.limit === 0) {
 			this.option.limit = this.option.linenum * 2;
 		}
-		if (!this.option.limits || this.option.limits.length == 0) {
+		if (!this.option.limits || this.option.limits.length === 0) {
 			this.option.limits = [this.option.limit];
         }
 	};
 	
 	card.prototype.init = function () {
-		var option = this.option;
-		var url = option.url;
-		var html = "";
-		html += option.loading == true ? '<div class="ew-table-loading">' : '      <div class="ew-table-loading layui-hide">';
+		const option = this.option;
+		let url = option.url;
+		let html = "";
+		html += option.loading === true ? '<div class="ew-table-loading">' : '      <div class="ew-table-loading layui-hide">';
 		html += '<i class="layui-icon layui-icon-loading layui-anim layui-anim-rotate layui-anim-loop"></i>';
 		html += '</div>';
 		$(option.elem).html(html);
@@ -82,7 +83,7 @@ layui.define(['table', 'laypage','jquery', 'element'], function(exports) {
             }
 			getData(url).then(function(data){
 				data = initData(data, option);
-				if (data.code != option.response.statusCode) {
+				if (data.code !== option.response.statusCode) {
 					option.data = [];
 					option.count = 0;
 				} else {
@@ -95,7 +96,7 @@ layui.define(['table', 'laypage','jquery', 'element'], function(exports) {
 					html += "<div id='cardpage'></div>";
 				}
 				else {
-				    if (data.code != option.response.statusCode) {
+				    if (data.code !== option.response.statusCode) {
 					    html = "<p>" + data.msg + "</p>";
 				    } else {
 				    	html = "<p>没有数据</p>";
@@ -123,7 +124,7 @@ layui.define(['table', 'laypage','jquery', 'element'], function(exports) {
 				option.alldata = option.data;
             }
 			if (option.page) {
-				var data = [];
+				const data = [];
 				option.count = option.alldata.length;
 				for (var i = (option.currentPage - 1) * option.limit; i < option.currentPage * option.limit && i<option.alldata.length; i++) {
 					data.push(option.alldata[i]);
@@ -161,17 +162,17 @@ layui.define(['table', 'laypage','jquery', 'element'], function(exports) {
     }
 
 	function createComponent(elem,linenum,data) {
-		var html = "<div class='cloud-card-component'>"
-		var content = createCards(elem, linenum,data);
-        var page = "";
-        content = content + page;
+		let html = "<div class='cloud-card-component'>";
+		let content = createCards(elem, linenum, data);
+		const page = "";
+		content = content + page;
         html += content + "</div>"
         return html;
 	}
 	
-	function createCards(elem, linenum,data) {	
-		var content = "<div class='layui-row layui-col-space30'>";
-		for (var i = 0; i < data.length; i++) {
+	function createCards(elem, linenum,data) {
+		let content = "<div class='layui-row layui-col-space30'>";
+		for (let i = 0; i < data.length; i++) {
 			content += createCard(elem, linenum,data[i],i);
         }
 		content += "</div>";
@@ -179,24 +180,24 @@ layui.define(['table', 'laypage','jquery', 'element'], function(exports) {
 	}
 	
 	function createCard(elem, linenum, item, no) {
-		var line = 12 / linenum;
-		var card =
-			'<div id=' + item.id + ' onclick="cardTableCheckedCard(' + elem + ',this)" class="layui-col-md' + line + ' ew-datagrid-item" data-index="' + no+'" data-number="1"> <div class="project-list-item"> <img class="project-list-item-cover" src="' + item.image + '"> <div class="project-list-item-body"> <h2 class="layui-elip">' + item.title + '</h2> <div class="project-list-item-text layui-text">' + item.remark + '</div> <div class="project-list-item-desc"> <span class="time">' +item.time + '</span> <div class="ew-head-list"></div> </div> </div > </div > </div > '
+		const line = 12 / linenum;
+		const card =
+			'<div id=' + item.id + ' onclick="cardTableCheckedCard(' + elem + ',this)" class="layui-col-md' + line + ' ew-datagrid-item" data-index="' + no + '" data-number="1"> <div class="project-list-item"> <img class="project-list-item-cover" src="' + item.image + '"> <div class="project-list-item-body"> <h2 class="layui-elip">' + item.title + '</h2> <div class="project-list-item-text layui-text">' + item.remark + '</div> <div class="project-list-item-desc"> <span class="time">' + item.time + '</span> <div class="ew-head-list"></div> </div> </div > </div > </div > ';
 		return card;
 	}
 	
 	function initData(tempData, option) {
-		var data = {};
+		const data = {};
 		data.code = tempData[option.response.statusName];
 		data.msg = tempData[option.response.msgName];
 		data.count = tempData[option.response.countName];
-		var dataList = tempData[option.response.dataName];
-        if(!dataList){
+		const dataList = tempData[option.response.dataName];
+		if(!dataList){
             return data;
         }
 		data.data = [];
-		for (var i = 0; i < dataList.length; i++) {
-			var item = dataList[i];
+		for (let i = 0; i < dataList.length; i++) {
+			const item = dataList[i];
 			item.id = dataList[i][option.request.idName];
 			item.image = dataList[i][option.request.imageName];
 			item.title = dataList[i][option.request.titleName];
@@ -208,7 +209,7 @@ layui.define(['table', 'laypage','jquery', 'element'], function(exports) {
     }
 
 	function getData(url) {
-		var defer = $.Deferred();
+		const defer = $.Deferred();
 		$.get(url + (url.indexOf("?") ? "&" : "?") + "fresh=" + Math.random(), function(result) {
 			defer.resolve(result)
 		});
@@ -217,7 +218,7 @@ layui.define(['table', 'laypage','jquery', 'element'], function(exports) {
 	
 	window.cardTableCheckedCard = function (elem,obj) {
 		$(obj).addClass('layui-table-click').siblings().removeClass('layui-table-click');
-		var item = {};
+		const item = {};
 		item.id = obj.id;
 		item.index = $(obj).attr('data-index');
 		item.image = $(obj).find('.project-list-item-cover')[0].src;
@@ -227,26 +228,26 @@ layui.define(['table', 'laypage','jquery', 'element'], function(exports) {
 		_instances[elem.id].option.checkedItem = item;
 		_instances[elem.id].option.clickItem(item);
 	}
-	
+
 	/** 对外提供的方法 */
-	var tt = {
-		
+	const tt = {
+
 		render: function (options) {
 			return new card(options);
 		},
-		
+
 		reload: function (id, opt) {
 			_instances[id].option.checkedItem = null;
 			_instances[id].reload(opt);
 		},
-		
+
 		getChecked: function (id) {
-			var option = _instances[id].option;
-			var data = option.checkedItem;
-			var item = {};
-            if (!data) {
+			const option = _instances[id].option;
+			const data = option.checkedItem;
+			const item = {};
+			if (!data) {
 				return null;
-            }
+			}
 			item[option.request.idName] = data.id;
 			item[option.request.imageName] = data.image;
 			item[option.request.titleName] = data.title;
@@ -254,22 +255,22 @@ layui.define(['table', 'laypage','jquery', 'element'], function(exports) {
 			item[option.request.timeName] = data.time;
 			return item;
 		},
-		
+
 		getAllData: function (id) {
-			var option = _instances[id].option;
-			var data = [];
-			for (var i = 0; i < option.data.length; i++) {
-				var item = {};
+			const option = _instances[id].option;
+			const data = [];
+			for (let i = 0; i < option.data.length; i++) {
+				const item = {};
 				item[option.request.idName] = option.data[i].id;
 				item[option.request.imageName] = option.data[i].image;
 				item[option.request.titleName] = option.data[i].title;
 				item[option.request.remarkName] = option.data[i].remark;
 				item[option.request.timeName] = option.data[i].time;
 				data.push(item);
-            }
+			}
 			return data;
 		},
-	}
-	
+	};
+
 	exports(MOD_NAME, tt);
 })
\ No newline at end of file
diff --git a/component/pear/module/common.js b/component/pear/module/common.js
index 50f2f15..eb817d8 100644
--- a/component/pear/module/common.js
+++ b/component/pear/module/common.js
@@ -4,12 +4,12 @@ layui.define(['jquery', 'element', 'table'], function (exports) {
     /**
      * 常用封装类
      * */
-    var MOD_NAME = 'common',
+    const MOD_NAME = 'common',
         $ = layui.jquery,
         table = layui.table,
         element = layui.element;
 
-    var common = new function () {
+    const common = new function () {
 
         /**
          * 获取当前表格选中字段
@@ -109,6 +109,6 @@ layui.define(['jquery', 'element', 'table'], function (exports) {
                 }
             })
         }
-    }
+    };
     exports(MOD_NAME, common);
 });
diff --git a/component/pear/module/context.js b/component/pear/module/context.js
index a803e02..7ec119f 100644
--- a/component/pear/module/context.js
+++ b/component/pear/module/context.js
@@ -1,19 +1,19 @@
 layui.define(['jquery', 'element'], function(exports) {
 	"use strict";
 
-	var MOD_NAME = 'context',
+	const MOD_NAME = 'context',
 		$ = layui.jquery,
 		element = layui.element;
 
-	var context = new function() {
-		
-		this.put = function(key,value){
-			localStorage.setItem(key,value);
+	const context = new function () {
+
+		this.put = function (key, value) {
+			localStorage.setItem(key, value);
 		}
 
-		this.get = function(key){
+		this.get = function (key) {
 			return localStorage.getItem(key);
 		}
-	}
+	};
 	exports(MOD_NAME, context);
 });
diff --git a/component/pear/module/convert.js b/component/pear/module/convert.js
index 1f86ba5..2facf7a 100644
--- a/component/pear/module/convert.js
+++ b/component/pear/module/convert.js
@@ -4,24 +4,23 @@ layui.define(['jquery', 'element'], function(exports) {
 	/**
 	 * 类 型 转 换 工 具 类
 	 * */
-	var MOD_NAME = 'convert',
+	const MOD_NAME = 'convert',
 		$ = layui.jquery,
 		element = layui.element;
 
-	var convert = new function() {
+	const convert = new function () {
 
 		// image 转 base64
-		this.imageToBase64 = function(img) {
-			var canvas = document.createElement("canvas");
+		this.imageToBase64 = function (img) {
+			const canvas = document.createElement("canvas");
 			canvas.width = img.width;
 			canvas.height = img.height;
-			var ctx = canvas.getContext("2d");
+			const ctx = canvas.getContext("2d");
 			ctx.drawImage(img, 0, 0, img.width, img.height);
-			var ext = img.src.substring(img.src.lastIndexOf(".")+1).toLowerCase();
-			var dataURL = canvas.toDataURL("image/"+ext);
-			return dataURL;
+			const ext = img.src.substring(img.src.lastIndexOf(".") + 1).toLowerCase();
+			return canvas.toDataURL("image/" + ext);
 		}
 
-	}
+	};
 	exports(MOD_NAME, convert);
 });
diff --git a/component/pear/module/count.js b/component/pear/module/count.js
index c9a659f..33f2858 100644
--- a/component/pear/module/count.js
+++ b/component/pear/module/count.js
@@ -1,37 +1,37 @@
 layui.define(['jquery', 'element'], function(exports) {
 	"use strict";
 
-	var MOD_NAME = 'count',
+	const MOD_NAME = 'count',
 		$ = layui.jquery,
 		element = layui.element;
 
-	var count = new function() {
+	const count = new function () {
 
-		this.up = function(targetEle, options) {
+		this.up = function (targetEle, options) {
 
 			options = options || {};
 
-			var $this = document.getElementById(targetEle),
-				time = options.time,     
-				finalNum = options.num, 
-				regulator = options.regulator, 
+			let $this = document.getElementById(targetEle),
+				time = options.time,
+				finalNum = options.num,
+				regulator = options.regulator,
 				step = finalNum / (time / regulator),
-				count = 0.00, 
+				count = 0.00,
 				initial = 0;
-				
-			var timer = setInterval(function() {
+
+			const timer = setInterval(function () {
 				count = count + step;
 				if (count >= finalNum) {
 					clearInterval(timer);
 					count = finalNum;
 				}
-				var t = count.toFixed(options.bit?options.bit:0);;
-				if (t == initial) return;
+				const t = count.toFixed(options.bit ? options.bit : 0);
+				if (t === initial) return;
 				initial = t;
 				$this.innerHTML = initial;
 			}, 30);
 		}
 
-	}
+	};
 	exports(MOD_NAME, count);
 });
diff --git a/component/pear/module/cropper.js b/component/pear/module/cropper.js
index 6d77497..86faa10 100644
--- a/component/pear/module/cropper.js
+++ b/component/pear/module/cropper.js
@@ -3,10 +3,10 @@
  */
 
 layui.define(['jquery'], function (exports) {
-    var $ = layui.jquery;
+    let $ = layui.jquery;
     $ = $ && $.hasOwnProperty('default') ? $['default'] : $;
 
-    var DEFAULTS = {
+    const DEFAULTS = {
         // Define the view mode of the cropper
         viewMode: 0, // 0, 1, 2, 3
 
@@ -102,13 +102,13 @@ layui.define(['jquery'], function (exports) {
         zoom: null
     };
 
-    var TEMPLATE = '<div class="cropper-container">' + '<div class="cropper-wrap-box">' + '<div class="cropper-canvas"></div>' + '</div>' + '<div class="cropper-drag-box"></div>' + '<div class="cropper-crop-box">' + '<span class="cropper-view-box"></span>' + '<span class="cropper-dashed dashed-h"></span>' + '<span class="cropper-dashed dashed-v"></span>' + '<span class="cropper-center"></span>' + '<span class="cropper-face"></span>' + '<span class="cropper-line line-e" data-action="e"></span>' + '<span class="cropper-line line-n" data-action="n"></span>' + '<span class="cropper-line line-w" data-action="w"></span>' + '<span class="cropper-line line-s" data-action="s"></span>' + '<span class="cropper-point point-e" data-action="e"></span>' + '<span class="cropper-point point-n" data-action="n"></span>' + '<span class="cropper-point point-w" data-action="w"></span>' + '<span class="cropper-point point-s" data-action="s"></span>' + '<span class="cropper-point point-ne" data-action="ne"></span>' + '<span class="cropper-point point-nw" data-action="nw"></span>' + '<span class="cropper-point point-sw" data-action="sw"></span>' + '<span class="cropper-point point-se" data-action="se"></span>' + '</div>' + '</div>';
+    const TEMPLATE = '<div class="cropper-container">' + '<div class="cropper-wrap-box">' + '<div class="cropper-canvas"></div>' + '</div>' + '<div class="cropper-drag-box"></div>' + '<div class="cropper-crop-box">' + '<span class="cropper-view-box"></span>' + '<span class="cropper-dashed dashed-h"></span>' + '<span class="cropper-dashed dashed-v"></span>' + '<span class="cropper-center"></span>' + '<span class="cropper-face"></span>' + '<span class="cropper-line line-e" data-action="e"></span>' + '<span class="cropper-line line-n" data-action="n"></span>' + '<span class="cropper-line line-w" data-action="w"></span>' + '<span class="cropper-line line-s" data-action="s"></span>' + '<span class="cropper-point point-e" data-action="e"></span>' + '<span class="cropper-point point-n" data-action="n"></span>' + '<span class="cropper-point point-w" data-action="w"></span>' + '<span class="cropper-point point-s" data-action="s"></span>' + '<span class="cropper-point point-ne" data-action="ne"></span>' + '<span class="cropper-point point-nw" data-action="nw"></span>' + '<span class="cropper-point point-sw" data-action="sw"></span>' + '<span class="cropper-point point-se" data-action="se"></span>' + '</div>' + '</div>';
 
-    var REGEXP_DATA_URL_HEAD = /^data:.*,/;
-    var REGEXP_USERAGENT = /(Macintosh|iPhone|iPod|iPad).*AppleWebKit/i;
-    var navigator = typeof window !== 'undefined' ? window.navigator : null;
-    var IS_SAFARI_OR_UIWEBVIEW = navigator && REGEXP_USERAGENT.test(navigator.userAgent);
-    var fromCharCode = String.fromCharCode;
+    const REGEXP_DATA_URL_HEAD = /^data:.*,/;
+    const REGEXP_USERAGENT = /(Macintosh|iPhone|iPod|iPad).*AppleWebKit/i;
+    const navigator = typeof window !== 'undefined' ? window.navigator : null;
+    const IS_SAFARI_OR_UIWEBVIEW = navigator && REGEXP_USERAGENT.test(navigator.userAgent);
+    const fromCharCode = String.fromCharCode;
 
     function isNumber(n) {
         return typeof n === 'number' && !isNaN(n);
@@ -119,7 +119,7 @@ layui.define(['jquery'], function (exports) {
     }
 
     function toArray(obj, offset) {
-        var args = [];
+        const args = [];
 
         // This is necessary for IE8
         if (isNumber(offset)) {
@@ -131,12 +131,18 @@ layui.define(['jquery'], function (exports) {
 
     // Custom proxy to avoid jQuery's guid
     function proxy(fn, context) {
-        for (var _len = arguments.length, args = Array(_len > 2 ? _len - 2 : 0), _key = 2; _key < _len; _key++) {
+        let args = Array(_len > 2 ? _len - 2 : 0);
+        let _key = 2;
+        let _len = arguments.length;
+        for (; _key < _len; _key++) {
             args[_key - 2] = arguments[_key];
         }
 
         return function () {
-            for (var _len2 = arguments.length, args2 = Array(_len2), _key2 = 0; _key2 < _len2; _key2++) {
+            let args2 = Array(_len2);
+            let _len2 = arguments.length;
+            let _key2 = 0;
+            for (; _key2 < _len2; _key2++) {
                 args2[_key2] = arguments[_key2];
             }
 
@@ -145,7 +151,7 @@ layui.define(['jquery'], function (exports) {
     }
 
     function objectKeys(obj) {
-        var keys = [];
+        const keys = [];
 
         $.each(obj, function (key) {
             keys.push(key);
@@ -155,13 +161,13 @@ layui.define(['jquery'], function (exports) {
     }
 
     function isCrossOriginURL(url) {
-        var parts = url.match(/^(https?:)\/\/([^:/?#]+):?(\d*)/i);
+        const parts = url.match(/^(https?:)\/\/([^:/?#]+):?(\d*)/i);
 
         return parts && (parts[1] !== location.protocol || parts[2] !== location.hostname || parts[3] !== location.port);
     }
 
     function addTimestamp(url) {
-        var timestamp = 'timestamp=' + new Date().getTime();
+        const timestamp = 'timestamp=' + new Date().getTime();
 
         return url + (url.indexOf('?') === -1 ? '?' : '&') + timestamp;
     }
@@ -174,7 +180,7 @@ layui.define(['jquery'], function (exports) {
         }
 
         // IE8: Don't use `new Image()` here (#319)
-        var newImage = document.createElement('img');
+        const newImage = document.createElement('img');
 
         newImage.onload = function load() {
             callback(this.width, this.height);
@@ -184,12 +190,12 @@ layui.define(['jquery'], function (exports) {
     }
 
     function getTransform(options) {
-        var transforms = [];
-        var translateX = options.translateX;
-        var translateY = options.translateY;
-        var rotate = options.rotate;
-        var scaleX = options.scaleX;
-        var scaleY = options.scaleY;
+        const transforms = [];
+        const translateX = options.translateX;
+        const translateY = options.translateY;
+        const rotate = options.rotate;
+        const scaleX = options.scaleX;
+        const scaleY = options.scaleY;
 
         if (isNumber(translateX) && translateX !== 0) {
             transforms.push('translateX(' + translateX + 'px)');
@@ -216,15 +222,15 @@ layui.define(['jquery'], function (exports) {
     }
 
     function getRotatedSizes(data, isReversed) {
-        var deg = Math.abs(data.degree) % 180;
-        var arc = (deg > 90 ? 180 - deg : deg) * Math.PI / 180;
-        var sinArc = Math.sin(arc);
-        var cosArc = Math.cos(arc);
-        var width = data.width;
-        var height = data.height;
-        var aspectRatio = data.aspectRatio;
-        var newWidth = void 0;
-        var newHeight = void 0;
+        const deg = Math.abs(data.degree) % 180;
+        const arc = (deg > 90 ? 180 - deg : deg) * Math.PI / 180;
+        const sinArc = Math.sin(arc);
+        const cosArc = Math.cos(arc);
+        const width = data.width;
+        const height = data.height;
+        const aspectRatio = data.aspectRatio;
+        let newWidth = void 0;
+        let newHeight = void 0;
 
         if (!isReversed) {
             newWidth = width * cosArc + height * sinArc;
@@ -241,23 +247,23 @@ layui.define(['jquery'], function (exports) {
     }
 
     function getSourceCanvas(image, data, options) {
-        var canvas = $('<canvas>')[0];
-        var context = canvas.getContext('2d');
-        var dstX = 0;
-        var dstY = 0;
-        var dstWidth = data.naturalWidth;
-        var dstHeight = data.naturalHeight;
-        var rotate = data.rotate;
-        var scaleX = data.scaleX;
-        var scaleY = data.scaleY;
-        var scalable = isNumber(scaleX) && isNumber(scaleY) && (scaleX !== 1 || scaleY !== 1);
-        var rotatable = isNumber(rotate) && rotate !== 0;
-        var advanced = rotatable || scalable;
-        var canvasWidth = dstWidth * Math.abs(scaleX || 1);
-        var canvasHeight = dstHeight * Math.abs(scaleY || 1);
-        var translateX = void 0;
-        var translateY = void 0;
-        var rotated = void 0;
+        const canvas = $('<canvas>')[0];
+        const context = canvas.getContext('2d');
+        let dstX = 0;
+        let dstY = 0;
+        const dstWidth = data.naturalWidth;
+        const dstHeight = data.naturalHeight;
+        const rotate = data.rotate;
+        const scaleX = data.scaleX;
+        const scaleY = data.scaleY;
+        const scalable = isNumber(scaleX) && isNumber(scaleY) && (scaleX !== 1 || scaleY !== 1);
+        const rotatable = isNumber(rotate) && rotate !== 0;
+        const advanced = rotatable || scalable;
+        let canvasWidth = dstWidth * Math.abs(scaleX || 1);
+        let canvasHeight = dstHeight * Math.abs(scaleY || 1);
+        let translateX = void 0;
+        let translateY = void 0;
+        let rotated = void 0;
 
         if (scalable) {
             translateX = canvasWidth / 2;
@@ -318,8 +324,8 @@ layui.define(['jquery'], function (exports) {
     }
 
     function getStringFromCharCode(dataView, start, length) {
-        var str = '';
-        var i = void 0;
+        let str = '';
+        let i = void 0;
 
         for (i = start, length += start; i < length; i += 1) {
             str += fromCharCode(dataView.getUint8(i));
@@ -329,18 +335,18 @@ layui.define(['jquery'], function (exports) {
     }
 
     function getOrientation(arrayBuffer) {
-        var dataView = new DataView(arrayBuffer);
-        var length = dataView.byteLength;
-        var orientation = void 0;
-        var exifIDCode = void 0;
-        var tiffOffset = void 0;
-        var firstIFDOffset = void 0;
-        var littleEndian = void 0;
-        var endianness = void 0;
-        var app1Start = void 0;
-        var ifdStart = void 0;
-        var offset = void 0;
-        var i = void 0;
+        const dataView = new DataView(arrayBuffer);
+        let length = dataView.byteLength;
+        let orientation = void 0;
+        let exifIDCode = void 0;
+        let tiffOffset = void 0;
+        let firstIFDOffset = void 0;
+        let littleEndian = void 0;
+        let endianness = void 0;
+        let app1Start = void 0;
+        let ifdStart = void 0;
+        let offset = void 0;
+        let i = void 0;
 
         // Only handle JPEG image (start by 0xFFD8)
         if (dataView.getUint8(0) === 0xFF && dataView.getUint8(1) === 0xD8) {
@@ -403,12 +409,12 @@ layui.define(['jquery'], function (exports) {
     }
 
     function dataURLToArrayBuffer(dataURL) {
-        var base64 = dataURL.replace(REGEXP_DATA_URL_HEAD, '');
-        var binary = atob(base64);
-        var length = binary.length;
-        var arrayBuffer = new ArrayBuffer(length);
-        var dataView = new Uint8Array(arrayBuffer);
-        var i = void 0;
+        const base64 = dataURL.replace(REGEXP_DATA_URL_HEAD, '');
+        const binary = atob(base64);
+        const length = binary.length;
+        const arrayBuffer = new ArrayBuffer(length);
+        const dataView = new Uint8Array(arrayBuffer);
+        let i = void 0;
 
         for (i = 0; i < length; i += 1) {
             dataView[i] = binary.charCodeAt(i);
@@ -419,10 +425,10 @@ layui.define(['jquery'], function (exports) {
 
     // Only available for JPEG image
     function arrayBufferToDataURL(arrayBuffer) {
-        var dataView = new Uint8Array(arrayBuffer);
-        var length = dataView.length;
-        var base64 = '';
-        var i = void 0;
+        const dataView = new Uint8Array(arrayBuffer);
+        const length = dataView.length;
+        let base64 = '';
+        let i = void 0;
 
         for (i = 0; i < length; i += 1) {
             base64 += fromCharCode(dataView[i]);
@@ -431,9 +437,9 @@ layui.define(['jquery'], function (exports) {
         return 'data:image/jpeg;base64,' + btoa(base64);
     }
 
-    var render = {
+    const render = {
         render: function render() {
-            var self = this;
+            const self = this;
 
             self.initContainer();
             self.initCanvas();
@@ -446,12 +452,12 @@ layui.define(['jquery'], function (exports) {
             }
         },
         initContainer: function initContainer() {
-            var self = this;
-            var options = self.options;
-            var $this = self.$element;
-            var $container = self.$container;
-            var $cropper = self.$cropper;
-            var hidden = 'cropper-hidden';
+            const self = this;
+            const options = self.options;
+            const $this = self.$element;
+            const $container = self.$container;
+            const $cropper = self.$cropper;
+            const hidden = 'cropper-hidden';
 
             $cropper.addClass(hidden);
             $this.removeClass(hidden);
@@ -468,20 +474,20 @@ layui.define(['jquery'], function (exports) {
 
         // Canvas (image wrapper)
         initCanvas: function initCanvas() {
-            var self = this;
-            var viewMode = self.options.viewMode;
-            var container = self.container;
-            var containerWidth = container.width;
-            var containerHeight = container.height;
-            var image = self.image;
-            var imageNaturalWidth = image.naturalWidth;
-            var imageNaturalHeight = image.naturalHeight;
-            var is90Degree = Math.abs(image.rotate) % 180 === 90;
-            var naturalWidth = is90Degree ? imageNaturalHeight : imageNaturalWidth;
-            var naturalHeight = is90Degree ? imageNaturalWidth : imageNaturalHeight;
-            var aspectRatio = naturalWidth / naturalHeight;
-            var canvasWidth = containerWidth;
-            var canvasHeight = containerHeight;
+            const self = this;
+            const viewMode = self.options.viewMode;
+            const container = self.container;
+            const containerWidth = container.width;
+            const containerHeight = container.height;
+            const image = self.image;
+            const imageNaturalWidth = image.naturalWidth;
+            const imageNaturalHeight = image.naturalHeight;
+            const is90Degree = Math.abs(image.rotate) % 180 === 90;
+            const naturalWidth = is90Degree ? imageNaturalHeight : imageNaturalWidth;
+            const naturalHeight = is90Degree ? imageNaturalWidth : imageNaturalHeight;
+            const aspectRatio = naturalWidth / naturalHeight;
+            let canvasWidth = containerWidth;
+            let canvasHeight = containerHeight;
 
             if (containerHeight * aspectRatio > containerWidth) {
                 if (viewMode === 3) {
@@ -495,7 +501,7 @@ layui.define(['jquery'], function (exports) {
                 canvasWidth = containerHeight * aspectRatio;
             }
 
-            var canvas = {
+            const canvas = {
                 naturalWidth: naturalWidth,
                 naturalHeight: naturalHeight,
                 aspectRatio: aspectRatio,
@@ -515,20 +521,20 @@ layui.define(['jquery'], function (exports) {
             self.initialCanvas = $.extend({}, canvas);
         },
         limitCanvas: function limitCanvas(isSizeLimited, isPositionLimited) {
-            var self = this;
-            var options = self.options;
-            var viewMode = options.viewMode;
-            var container = self.container;
-            var containerWidth = container.width;
-            var containerHeight = container.height;
-            var canvas = self.canvas;
-            var aspectRatio = canvas.aspectRatio;
-            var cropBox = self.cropBox;
-            var cropped = self.cropped && cropBox;
+            const self = this;
+            const options = self.options;
+            const viewMode = options.viewMode;
+            const container = self.container;
+            const containerWidth = container.width;
+            const containerHeight = container.height;
+            const canvas = self.canvas;
+            const aspectRatio = canvas.aspectRatio;
+            const cropBox = self.cropBox;
+            const cropped = self.cropped && cropBox;
 
             if (isSizeLimited) {
-                var minCanvasWidth = Number(options.minCanvasWidth) || 0;
-                var minCanvasHeight = Number(options.minCanvasHeight) || 0;
+                let minCanvasWidth = Number(options.minCanvasWidth) || 0;
+                let minCanvasHeight = Number(options.minCanvasHeight) || 0;
 
                 if (viewMode) {
                     if (viewMode > 1) {
@@ -578,8 +584,8 @@ layui.define(['jquery'], function (exports) {
 
             if (isPositionLimited) {
                 if (viewMode) {
-                    var newCanvasLeft = containerWidth - canvas.width;
-                    var newCanvasTop = containerHeight - canvas.height;
+                    const newCanvasLeft = containerWidth - canvas.width;
+                    const newCanvasTop = containerHeight - canvas.height;
 
                     canvas.minLeft = Math.min(0, newCanvasLeft);
                     canvas.minTop = Math.min(0, newCanvasTop);
@@ -613,24 +619,24 @@ layui.define(['jquery'], function (exports) {
             }
         },
         renderCanvas: function renderCanvas(isChanged) {
-            var self = this;
-            var canvas = self.canvas;
-            var image = self.image;
-            var rotate = image.rotate;
-            var naturalWidth = image.naturalWidth;
-            var naturalHeight = image.naturalHeight;
+            const self = this;
+            const canvas = self.canvas;
+            const image = self.image;
+            const rotate = image.rotate;
+            const naturalWidth = image.naturalWidth;
+            const naturalHeight = image.naturalHeight;
 
             if (self.rotated) {
                 self.rotated = false;
 
                 // Computes rotated sizes with image sizes
-                var rotated = getRotatedSizes({
+                const rotated = getRotatedSizes({
                     width: image.width,
                     height: image.height,
                     degree: rotate
                 });
-                var aspectRatio = rotated.width / rotated.height;
-                var isSquareImage = image.aspectRatio === 1;
+                const aspectRatio = rotated.width / rotated.height;
+                const isSquareImage = image.aspectRatio === 1;
 
                 if (isSquareImage || aspectRatio !== canvas.aspectRatio) {
                     canvas.left -= (rotated.width - canvas.width) / 2;
@@ -643,7 +649,7 @@ layui.define(['jquery'], function (exports) {
 
                     // Computes rotated sizes with natural image sizes
                     if (isSquareImage && rotate % 90 || rotate % 180) {
-                        var rotated2 = getRotatedSizes({
+                        const rotated2 = getRotatedSizes({
                             width: naturalWidth,
                             height: naturalHeight,
                             degree: rotate
@@ -695,10 +701,10 @@ layui.define(['jquery'], function (exports) {
             }
         },
         renderImage: function renderImage(isChanged) {
-            var self = this;
-            var canvas = self.canvas;
-            var image = self.image;
-            var reversed = void 0;
+            const self = this;
+            const canvas = self.canvas;
+            const image = self.image;
+            let reversed = void 0;
 
             if (image.rotate) {
                 reversed = getRotatedSizes({
@@ -735,12 +741,12 @@ layui.define(['jquery'], function (exports) {
             }
         },
         initCropBox: function initCropBox() {
-            var self = this;
-            var options = self.options;
-            var canvas = self.canvas;
-            var aspectRatio = options.aspectRatio;
-            var autoCropArea = Number(options.autoCropArea) || 0.8;
-            var cropBox = {
+            const self = this;
+            const options = self.options;
+            const canvas = self.canvas;
+            const aspectRatio = options.aspectRatio;
+            const autoCropArea = Number(options.autoCropArea) || 0.8;
+            const cropBox = {
                 width: canvas.width,
                 height: canvas.height
             };
@@ -771,21 +777,21 @@ layui.define(['jquery'], function (exports) {
             self.initialCropBox = $.extend({}, cropBox);
         },
         limitCropBox: function limitCropBox(isSizeLimited, isPositionLimited) {
-            var self = this;
-            var options = self.options;
-            var aspectRatio = options.aspectRatio;
-            var container = self.container;
-            var containerWidth = container.width;
-            var containerHeight = container.height;
-            var canvas = self.canvas;
-            var cropBox = self.cropBox;
-            var limited = self.limited;
+            const self = this;
+            const options = self.options;
+            const aspectRatio = options.aspectRatio;
+            const container = self.container;
+            const containerWidth = container.width;
+            const containerHeight = container.height;
+            const canvas = self.canvas;
+            const cropBox = self.cropBox;
+            const limited = self.limited;
 
             if (isSizeLimited) {
-                var minCropBoxWidth = Number(options.minCropBoxWidth) || 0;
-                var minCropBoxHeight = Number(options.minCropBoxHeight) || 0;
-                var maxCropBoxWidth = Math.min(containerWidth, limited ? canvas.width : containerWidth);
-                var maxCropBoxHeight = Math.min(containerHeight, limited ? canvas.height : containerHeight);
+                let minCropBoxWidth = Number(options.minCropBoxWidth) || 0;
+                let minCropBoxHeight = Number(options.minCropBoxHeight) || 0;
+                let maxCropBoxWidth = Math.min(containerWidth, limited ? canvas.width : containerWidth);
+                let maxCropBoxHeight = Math.min(containerHeight, limited ? canvas.height : containerHeight);
 
                 // The min/maxCropBoxWidth/Height must be less than containerWidth/Height
                 minCropBoxWidth = Math.min(minCropBoxWidth, containerWidth);
@@ -833,12 +839,12 @@ layui.define(['jquery'], function (exports) {
             }
         },
         renderCropBox: function renderCropBox() {
-            var self = this;
-            var options = self.options;
-            var container = self.container;
-            var containerWidth = container.width;
-            var containerHeight = container.height;
-            var cropBox = self.cropBox;
+            const self = this;
+            const options = self.options;
+            const container = self.container;
+            const containerWidth = container.width;
+            const containerHeight = container.height;
+            const cropBox = self.cropBox;
 
             if (cropBox.width > cropBox.maxWidth || cropBox.width < cropBox.minWidth) {
                 cropBox.left = cropBox.oldLeft;
@@ -881,7 +887,7 @@ layui.define(['jquery'], function (exports) {
             }
         },
         output: function output() {
-            var self = this;
+            const self = this;
 
             self.preview();
 
@@ -891,14 +897,14 @@ layui.define(['jquery'], function (exports) {
         }
     };
 
-    var DATA_PREVIEW = 'preview';
+    const DATA_PREVIEW = 'preview';
 
-    var preview = {
+    const preview = {
         initPreview: function initPreview() {
-            var self = this;
-            var crossOrigin = self.crossOrigin;
-            var url = crossOrigin ? self.crossOriginUrl : self.url;
-            var image = document.createElement('img');
+            const self = this;
+            const crossOrigin = self.crossOrigin;
+            const url = crossOrigin ? self.crossOriginUrl : self.url;
+            const image = document.createElement('img');
 
             if (crossOrigin) {
                 image.crossOrigin = crossOrigin;
@@ -906,14 +912,14 @@ layui.define(['jquery'], function (exports) {
 
             image.src = url;
 
-            var $clone2 = $(image);
+            const $clone2 = $(image);
 
             self.$preview = $(self.options.preview);
             self.$clone2 = $clone2;
             self.$viewBox.html($clone2);
             self.$preview.each(function (i, element) {
-                var $this = $(element);
-                var img = document.createElement('img');
+                const $this = $(element);
+                const img = document.createElement('img');
 
                 // Save the original size for recover
                 $this.data(DATA_PREVIEW, {
@@ -941,8 +947,8 @@ layui.define(['jquery'], function (exports) {
         },
         resetPreview: function resetPreview() {
             this.$preview.each(function (i, element) {
-                var $this = $(element);
-                var data = $this.data(DATA_PREVIEW);
+                const $this = $(element);
+                const data = $this.data(DATA_PREVIEW);
 
                 $this.css({
                     width: data.width,
@@ -951,16 +957,16 @@ layui.define(['jquery'], function (exports) {
             });
         },
         preview: function preview() {
-            var self = this;
-            var image = self.image;
-            var canvas = self.canvas;
-            var cropBox = self.cropBox;
-            var cropBoxWidth = cropBox.width;
-            var cropBoxHeight = cropBox.height;
-            var width = image.width;
-            var height = image.height;
-            var left = cropBox.left - canvas.left - image.left;
-            var top = cropBox.top - canvas.top - image.top;
+            const self = this;
+            const image = self.image;
+            const canvas = self.canvas;
+            const cropBox = self.cropBox;
+            const cropBoxWidth = cropBox.width;
+            const cropBoxHeight = cropBox.height;
+            const width = image.width;
+            const height = image.height;
+            const left = cropBox.left - canvas.left - image.left;
+            const top = cropBox.top - canvas.top - image.top;
 
             if (!self.cropped || self.disabled) {
                 return;
@@ -976,13 +982,13 @@ layui.define(['jquery'], function (exports) {
             });
 
             self.$preview.each(function (i, element) {
-                var $this = $(element);
-                var data = $this.data(DATA_PREVIEW);
-                var originalWidth = data.width;
-                var originalHeight = data.height;
-                var newWidth = originalWidth;
-                var newHeight = originalHeight;
-                var ratio = 1;
+                const $this = $(element);
+                const data = $this.data(DATA_PREVIEW);
+                const originalWidth = data.width;
+                const originalHeight = data.height;
+                let newWidth = originalWidth;
+                let newHeight = originalHeight;
+                let ratio = 1;
 
                 if (cropBoxWidth) {
                     ratio = originalWidth / cropBoxWidth;
@@ -1011,27 +1017,27 @@ layui.define(['jquery'], function (exports) {
     };
 
     // Globals
-    var PointerEvent = typeof window !== 'undefined' ? window.PointerEvent : null;
+    const PointerEvent = typeof window !== 'undefined' ? window.PointerEvent : null;
 
     // Events
-    var EVENT_POINTER_DOWN = PointerEvent ? 'pointerdown' : 'touchstart mousedown';
-    var EVENT_POINTER_MOVE = PointerEvent ? 'pointermove' : 'touchmove mousemove';
-    var EVENT_POINTER_UP = PointerEvent ? ' pointerup pointercancel' : 'touchend touchcancel mouseup';
-    var EVENT_WHEEL = 'wheel mousewheel DOMMouseScroll';
-    var EVENT_DBLCLICK = 'dblclick';
-    var EVENT_RESIZE = 'resize';
-    var EVENT_CROP_START = 'cropstart';
-    var EVENT_CROP_MOVE = 'cropmove';
-    var EVENT_CROP_END = 'cropend';
-    var EVENT_CROP = 'crop';
-    var EVENT_ZOOM = 'zoom';
-
-    var events = {
+    const EVENT_POINTER_DOWN = PointerEvent ? 'pointerdown' : 'touchstart mousedown';
+    const EVENT_POINTER_MOVE = PointerEvent ? 'pointermove' : 'touchmove mousemove';
+    const EVENT_POINTER_UP = PointerEvent ? ' pointerup pointercancel' : 'touchend touchcancel mouseup';
+    const EVENT_WHEEL = 'wheel mousewheel DOMMouseScroll';
+    const EVENT_DBLCLICK = 'dblclick';
+    const EVENT_RESIZE = 'resize';
+    const EVENT_CROP_START = 'cropstart';
+    const EVENT_CROP_MOVE = 'cropmove';
+    const EVENT_CROP_END = 'cropend';
+    const EVENT_CROP = 'crop';
+    const EVENT_ZOOM = 'zoom';
+
+    const events = {
         bind: function bind() {
-            var self = this;
-            var options = self.options;
-            var $this = self.$element;
-            var $cropper = self.$cropper;
+            const self = this;
+            const options = self.options;
+            const $this = self.$element;
+            const $cropper = self.$cropper;
 
             if ($.isFunction(options.cropstart)) {
                 $this.on(EVENT_CROP_START, options.cropstart);
@@ -1070,10 +1076,10 @@ layui.define(['jquery'], function (exports) {
             }
         },
         unbind: function unbind() {
-            var self = this;
-            var options = self.options;
-            var $this = self.$element;
-            var $cropper = self.$cropper;
+            const self = this;
+            const options = self.options;
+            const $this = self.$element;
+            const $cropper = self.$cropper;
 
             if ($.isFunction(options.cropstart)) {
                 $this.off(EVENT_CROP_START, options.cropstart);
@@ -1113,13 +1119,13 @@ layui.define(['jquery'], function (exports) {
         }
     };
 
-    var REGEXP_ACTIONS = /^(e|w|s|n|se|sw|ne|nw|all|crop|move|zoom)$/;
+    const REGEXP_ACTIONS = /^(e|w|s|n|se|sw|ne|nw|all|crop|move|zoom)$/;
 
     function getPointer(_ref, endOnly) {
-        var pageX = _ref.pageX,
+        const pageX = _ref.pageX,
             pageY = _ref.pageY;
 
-        var end = {
+        const end = {
             endX: pageX,
             endY: pageY
         };
@@ -1134,25 +1140,25 @@ layui.define(['jquery'], function (exports) {
         }, end);
     }
 
-    var handlers = {
+    const handlers = {
         resize: function resize() {
-            var self = this;
-            var options = self.options;
-            var $container = self.$container;
-            var container = self.container;
-            var minContainerWidth = Number(options.minContainerWidth) || 200;
-            var minContainerHeight = Number(options.minContainerHeight) || 100;
+            const self = this;
+            const options = self.options;
+            const $container = self.$container;
+            const container = self.container;
+            const minContainerWidth = Number(options.minContainerWidth) || 200;
+            const minContainerHeight = Number(options.minContainerHeight) || 100;
 
             if (self.disabled || container.width === minContainerWidth || container.height === minContainerHeight) {
                 return;
             }
 
-            var ratio = $container.width() / container.width;
+            const ratio = $container.width() / container.width;
 
             // Resize when width changed or height changed
             if (ratio !== 1 || $container.height() !== container.height) {
-                var canvasData = void 0;
-                var cropBoxData = void 0;
+                let canvasData = void 0;
+                let cropBoxData = void 0;
 
                 if (options.restore) {
                     canvasData = self.getCanvasData();
@@ -1172,7 +1178,7 @@ layui.define(['jquery'], function (exports) {
             }
         },
         dblclick: function dblclick() {
-            var self = this;
+            const self = this;
 
             if (self.disabled || self.options.dragMode === 'none') {
                 return;
@@ -1181,9 +1187,9 @@ layui.define(['jquery'], function (exports) {
             self.setDragMode(self.$dragBox.hasClass('cropper-crop') ? 'move' : 'crop');
         },
         wheel: function wheel(event) {
-            var self = this;
-            var e = event.originalEvent || event;
-            var ratio = Number(self.options.wheelZoomRatio) || 0.1;
+            const self = this;
+            const e = event.originalEvent || event;
+            const ratio = Number(self.options.wheelZoomRatio) || 0.1;
 
             if (self.disabled) {
                 return;
@@ -1202,7 +1208,7 @@ layui.define(['jquery'], function (exports) {
                 self.wheeling = false;
             }, 50);
 
-            var delta = 1;
+            let delta = 1;
 
             if (e.deltaY) {
                 delta = e.deltaY > 0 ? 1 : -1;
@@ -1215,16 +1221,16 @@ layui.define(['jquery'], function (exports) {
             self.zoom(-delta * ratio, event);
         },
         cropStart: function cropStart(e) {
-            var self = this;
+            const self = this;
 
             if (self.disabled) {
                 return;
             }
 
-            var options = self.options;
-            var pointers = self.pointers;
-            var originalEvent = e.originalEvent;
-            var action = void 0;
+            const options = self.options;
+            const pointers = self.pointers;
+            const originalEvent = e.originalEvent;
+            let action = void 0;
 
             if (originalEvent && originalEvent.changedTouches) {
                 // Handle touch event
@@ -1264,15 +1270,15 @@ layui.define(['jquery'], function (exports) {
             }
         },
         cropMove: function cropMove(e) {
-            var self = this;
-            var action = self.action;
+            const self = this;
+            const action = self.action;
 
             if (self.disabled || !action) {
                 return;
             }
 
-            var pointers = self.pointers;
-            var originalEvent = e.originalEvent;
+            const pointers = self.pointers;
+            const originalEvent = e.originalEvent;
 
             e.preventDefault();
 
@@ -1294,15 +1300,15 @@ layui.define(['jquery'], function (exports) {
             self.change(e);
         },
         cropEnd: function cropEnd(e) {
-            var self = this;
+            const self = this;
 
             if (self.disabled) {
                 return;
             }
 
-            var action = self.action;
-            var pointers = self.pointers;
-            var originalEvent = e.originalEvent;
+            const action = self.action;
+            const pointers = self.pointers;
+            const originalEvent = e.originalEvent;
 
             if (originalEvent && originalEvent.changedTouches) {
                 $.each(originalEvent.changedTouches, function (i, touch) {
@@ -1335,30 +1341,30 @@ layui.define(['jquery'], function (exports) {
     };
 
     // Actions
-    var ACTION_EAST = 'e';
-    var ACTION_WEST = 'w';
-    var ACTION_SOUTH = 's';
-    var ACTION_NORTH = 'n';
-    var ACTION_SOUTH_EAST = 'se';
-    var ACTION_SOUTH_WEST = 'sw';
-    var ACTION_NORTH_EAST = 'ne';
-    var ACTION_NORTH_WEST = 'nw';
+    const ACTION_EAST = 'e';
+    const ACTION_WEST = 'w';
+    const ACTION_SOUTH = 's';
+    const ACTION_NORTH = 'n';
+    const ACTION_SOUTH_EAST = 'se';
+    const ACTION_SOUTH_WEST = 'sw';
+    const ACTION_NORTH_EAST = 'ne';
+    const ACTION_NORTH_WEST = 'nw';
 
     function getMaxZoomRatio(pointers) {
-        var pointers2 = $.extend({}, pointers);
-        var ratios = [];
+        const pointers2 = $.extend({}, pointers);
+        const ratios = [];
 
         $.each(pointers, function (pointerId, pointer) {
             delete pointers2[pointerId];
 
             $.each(pointers2, function (pointerId2, pointer2) {
-                var x1 = Math.abs(pointer.startX - pointer2.startX);
-                var y1 = Math.abs(pointer.startY - pointer2.startY);
-                var x2 = Math.abs(pointer.endX - pointer2.endX);
-                var y2 = Math.abs(pointer.endY - pointer2.endY);
-                var z1 = Math.sqrt(x1 * x1 + y1 * y1);
-                var z2 = Math.sqrt(x2 * x2 + y2 * y2);
-                var ratio = (z2 - z1) / z1;
+                const x1 = Math.abs(pointer.startX - pointer2.startX);
+                const y1 = Math.abs(pointer.startY - pointer2.startY);
+                const x2 = Math.abs(pointer.endX - pointer2.endX);
+                const y2 = Math.abs(pointer.endY - pointer2.endY);
+                const z1 = Math.sqrt(x1 * x1 + y1 * y1);
+                const z2 = Math.sqrt(x2 * x2 + y2 * y2);
+                const ratio = (z2 - z1) / z1;
 
                 ratios.push(ratio);
             });
@@ -1371,29 +1377,29 @@ layui.define(['jquery'], function (exports) {
         return ratios[0];
     }
 
-    var change = {
+    const change = {
         change: function change(e) {
-            var self = this;
-            var options = self.options;
-            var pointers = self.pointers;
-            var pointer = pointers[objectKeys(pointers)[0]];
-            var container = self.container;
-            var canvas = self.canvas;
-            var cropBox = self.cropBox;
-            var action = self.action;
-            var aspectRatio = options.aspectRatio;
-            var width = cropBox.width;
-            var height = cropBox.height;
-            var left = cropBox.left;
-            var top = cropBox.top;
-            var right = left + width;
-            var bottom = top + height;
-            var minLeft = 0;
-            var minTop = 0;
-            var maxWidth = container.width;
-            var maxHeight = container.height;
-            var renderable = true;
-            var offset = void 0;
+            const self = this;
+            const options = self.options;
+            const pointers = self.pointers;
+            const pointer = pointers[objectKeys(pointers)[0]];
+            const container = self.container;
+            const canvas = self.canvas;
+            const cropBox = self.cropBox;
+            let action = self.action;
+            let aspectRatio = options.aspectRatio;
+            let width = cropBox.width;
+            let height = cropBox.height;
+            let left = cropBox.left;
+            let top = cropBox.top;
+            const right = left + width;
+            const bottom = top + height;
+            let minLeft = 0;
+            let minTop = 0;
+            let maxWidth = container.width;
+            let maxHeight = container.height;
+            let renderable = true;
+            let offset = void 0;
 
             // Locking aspect ratio in "free mode" by holding shift key (#259)
             if (!aspectRatio && e.shiftKey) {
@@ -1407,7 +1413,7 @@ layui.define(['jquery'], function (exports) {
                 maxHeight = minTop + Math.min(container.height, canvas.height, canvas.top + canvas.height);
             }
 
-            var range = {
+            const range = {
                 x: pointer.endX - pointer.startX,
                 y: pointer.endY - pointer.startY
             };
@@ -1419,7 +1425,7 @@ layui.define(['jquery'], function (exports) {
                     top += range.y;
                     break;
 
-                    // Resize crop box
+                // Resize crop box
                 case ACTION_EAST:
                     if (range.x >= 0 && (right >= maxWidth || aspectRatio && (top <= minTop || bottom >= maxHeight))) {
                         renderable = false;
@@ -1702,19 +1708,19 @@ layui.define(['jquery'], function (exports) {
 
                     break;
 
-                    // Move canvas
+                // Move canvas
                 case 'move':
                     self.move(range.x, range.y);
                     renderable = false;
                     break;
 
-                    // Zoom canvas
+                // Zoom canvas
                 case 'zoom':
                     self.zoom(getMaxZoomRatio(pointers), e.originalEvent);
                     renderable = false;
                     break;
 
-                    // Create crop box
+                // Create crop box
                 case 'crop':
                     if (!range.x || !range.y) {
                         renderable = false;
@@ -1773,12 +1779,12 @@ layui.define(['jquery'], function (exports) {
     function _toConsumableArray(arr) { if (Array.isArray(arr)) { for (var i = 0, arr2 = Array(arr.length) ; i < arr.length; i++) { arr2[i] = arr[i]; } return arr2; } else { return Array.from(arr); } }
 
     function getPointersCenter(pointers) {
-        var pageX = 0;
-        var pageY = 0;
-        var count = 0;
+        let pageX = 0;
+        let pageY = 0;
+        let count = 0;
 
         $.each(pointers, function (i, _ref) {
-            var startX = _ref.startX,
+            const startX = _ref.startX,
                 startY = _ref.startY;
 
             pageX += startX;
@@ -1795,10 +1801,10 @@ layui.define(['jquery'], function (exports) {
         };
     }
 
-    var methods = {
+    const methods = {
         // Show the crop box manually
         crop: function crop() {
-            var self = this;
+            const self = this;
 
             if (!self.ready || self.disabled) {
                 return;
@@ -1821,7 +1827,7 @@ layui.define(['jquery'], function (exports) {
 
         // Reset the image and crop box to their initial states
         reset: function reset() {
-            var self = this;
+            const self = this;
 
             if (!self.ready || self.disabled) {
                 return;
@@ -1841,7 +1847,7 @@ layui.define(['jquery'], function (exports) {
 
         // Clear the crop box
         clear: function clear() {
-            var self = this;
+            const self = this;
 
             if (!self.cropped || self.disabled) {
                 return;
@@ -1874,7 +1880,7 @@ layui.define(['jquery'], function (exports) {
          * @param {Boolean} onlyColorChanged (optional)
          */
         replace: function replace(url, onlyColorChanged) {
-            var self = this;
+            const self = this;
 
             if (!self.disabled && url) {
                 if (self.isImg) {
@@ -1903,7 +1909,7 @@ layui.define(['jquery'], function (exports) {
 
         // Enable (unfreeze) the cropper
         enable: function enable() {
-            var self = this;
+            const self = this;
 
             if (self.ready) {
                 self.disabled = false;
@@ -1914,7 +1920,7 @@ layui.define(['jquery'], function (exports) {
 
         // Disable (freeze) the cropper
         disable: function disable() {
-            var self = this;
+            const self = this;
 
             if (self.ready) {
                 self.disabled = true;
@@ -1925,8 +1931,8 @@ layui.define(['jquery'], function (exports) {
 
         // Destroy the cropper and remove the instance from the image
         destroy: function destroy() {
-            var self = this;
-            var $this = self.$element;
+            const self = this;
+            const $this = self.$element;
 
             if (self.loaded) {
                 if (self.isImg && self.replaced) {
@@ -1952,8 +1958,8 @@ layui.define(['jquery'], function (exports) {
          * @param {Number} offsetY (optional)
          */
         move: function move(offsetX, offsetY) {
-            var self = this;
-            var canvas = self.canvas;
+            const self = this;
+            const canvas = self.canvas;
 
             self.moveTo(isUndefined(offsetX) ? offsetX : canvas.left + Number(offsetX), isUndefined(offsetY) ? offsetY : canvas.top + Number(offsetY));
         },
@@ -1966,9 +1972,9 @@ layui.define(['jquery'], function (exports) {
          * @param {Number} y (optional)
          */
         moveTo: function moveTo(x, y) {
-            var self = this;
-            var canvas = self.canvas;
-            var changed = false;
+            const self = this;
+            const canvas = self.canvas;
+            let changed = false;
 
             // If "y" is not present, its default value is "x"
             if (isUndefined(y)) {
@@ -2003,8 +2009,8 @@ layui.define(['jquery'], function (exports) {
          * @param {jQuery Event} _event (private)
          */
         zoom: function zoom(ratio, _event) {
-            var self = this;
-            var canvas = self.canvas;
+            const self = this;
+            const canvas = self.canvas;
 
             ratio = Number(ratio);
 
@@ -2025,21 +2031,21 @@ layui.define(['jquery'], function (exports) {
          * @param {jQuery Event} _event (private)
          */
         zoomTo: function zoomTo(ratio, _event) {
-            var self = this;
-            var options = self.options;
-            var pointers = self.pointers;
-            var canvas = self.canvas;
-            var width = canvas.width;
-            var height = canvas.height;
-            var naturalWidth = canvas.naturalWidth;
-            var naturalHeight = canvas.naturalHeight;
+            const self = this;
+            const options = self.options;
+            const pointers = self.pointers;
+            const canvas = self.canvas;
+            const width = canvas.width;
+            const height = canvas.height;
+            const naturalWidth = canvas.naturalWidth;
+            const naturalHeight = canvas.naturalHeight;
 
             ratio = Number(ratio);
 
             if (ratio >= 0 && self.ready && !self.disabled && options.zoomable) {
-                var newWidth = naturalWidth * ratio;
-                var newHeight = naturalHeight * ratio;
-                var originalEvent = void 0;
+                const newWidth = naturalWidth * ratio;
+                const newHeight = naturalHeight * ratio;
+                let originalEvent = void 0;
 
                 if (_event) {
                     originalEvent = _event.originalEvent;
@@ -2082,7 +2088,7 @@ layui.define(['jquery'], function (exports) {
          * @param {Number} degree
          */
         rotate: function rotate(degree) {
-            var self = this;
+            const self = this;
 
             self.rotateTo((self.image.rotate || 0) + Number(degree));
         },
@@ -2095,7 +2101,7 @@ layui.define(['jquery'], function (exports) {
          * @param {Number} degree
          */
         rotateTo: function rotateTo(degree) {
-            var self = this;
+            const self = this;
 
             degree = Number(degree);
 
@@ -2115,9 +2121,9 @@ layui.define(['jquery'], function (exports) {
          * @param {Number} scaleY (optional)
          */
         scale: function scale(scaleX, scaleY) {
-            var self = this;
-            var image = self.image;
-            var changed = false;
+            const self = this;
+            const image = self.image;
+            let changed = false;
 
             // If "scaleY" is not present, its default value is "scaleX"
             if (isUndefined(scaleY)) {
@@ -2151,8 +2157,8 @@ layui.define(['jquery'], function (exports) {
          * @param {Number} scaleX
          */
         scaleX: function scaleX(_scaleX) {
-            var self = this;
-            var scaleY = self.image.scaleY;
+            const self = this;
+            const scaleY = self.image.scaleY;
 
             self.scale(_scaleX, isNumber(scaleY) ? scaleY : 1);
         },
@@ -2164,8 +2170,8 @@ layui.define(['jquery'], function (exports) {
          * @param {Number} scaleY
          */
         scaleY: function scaleY(_scaleY) {
-            var self = this;
-            var scaleX = self.image.scaleX;
+            const self = this;
+            const scaleX = self.image.scaleX;
 
             self.scale(isNumber(scaleX) ? scaleX : 1, _scaleY);
         },
@@ -2178,13 +2184,13 @@ layui.define(['jquery'], function (exports) {
          * @return {Object} data
          */
         getData: function getData(isRounded) {
-            var self = this;
-            var options = self.options;
-            var image = self.image;
-            var canvas = self.canvas;
-            var cropBox = self.cropBox;
-            var ratio = void 0;
-            var data = void 0;
+            const self = this;
+            const options = self.options;
+            const image = self.image;
+            const canvas = self.canvas;
+            const cropBox = self.cropBox;
+            let ratio = void 0;
+            let data = void 0;
 
             if (self.ready && self.cropped) {
                 data = {
@@ -2228,14 +2234,14 @@ layui.define(['jquery'], function (exports) {
          * @param {Object} data
          */
         setData: function setData(data) {
-            var self = this;
-            var options = self.options;
-            var image = self.image;
-            var canvas = self.canvas;
-            var cropBoxData = {};
-            var rotated = void 0;
-            var isScaled = void 0;
-            var ratio = void 0;
+            const self = this;
+            const options = self.options;
+            const image = self.image;
+            const canvas = self.canvas;
+            const cropBoxData = {};
+            let rotated = void 0;
+            let isScaled = void 0;
+            let ratio = void 0;
 
             if ($.isFunction(data)) {
                 data = data.call(self.element);
@@ -2317,9 +2323,9 @@ layui.define(['jquery'], function (exports) {
          * @return {Object} data
          */
         getCanvasData: function getCanvasData() {
-            var self = this;
-            var canvas = self.canvas;
-            var data = {};
+            const self = this;
+            const canvas = self.canvas;
+            const data = {};
 
             if (self.ready) {
                 $.each(['left', 'top', 'width', 'height', 'naturalWidth', 'naturalHeight'], function (i, n) {
@@ -2337,9 +2343,9 @@ layui.define(['jquery'], function (exports) {
          * @param {Object} data
          */
         setCanvasData: function setCanvasData(data) {
-            var self = this;
-            var canvas = self.canvas;
-            var aspectRatio = canvas.aspectRatio;
+            const self = this;
+            const canvas = self.canvas;
+            const aspectRatio = canvas.aspectRatio;
 
             if ($.isFunction(data)) {
                 data = data.call(self.$element);
@@ -2373,8 +2379,8 @@ layui.define(['jquery'], function (exports) {
          * @return {Object} data
          */
         getCropBoxData: function getCropBoxData() {
-            var self = this;
-            var cropBox = self.cropBox;
+            const self = this;
+            const cropBox = self.cropBox;
 
             return self.ready && self.cropped ? {
                 left: cropBox.left,
@@ -2391,11 +2397,11 @@ layui.define(['jquery'], function (exports) {
          * @param {Object} data
          */
         setCropBoxData: function setCropBoxData(data) {
-            var self = this;
-            var cropBox = self.cropBox;
-            var aspectRatio = self.options.aspectRatio;
-            var widthChanged = void 0;
-            var heightChanged = void 0;
+            const self = this;
+            const cropBox = self.cropBox;
+            const aspectRatio = self.options.aspectRatio;
+            let widthChanged = void 0;
+            let heightChanged = void 0;
 
             if ($.isFunction(data)) {
                 data = data.call(self.$element);
@@ -2440,7 +2446,7 @@ layui.define(['jquery'], function (exports) {
          * @return {HTMLCanvasElement} canvas
          */
         getCroppedCanvas: function getCroppedCanvas(options) {
-            var self = this;
+            const self = this;
 
             if (!self.ready || !window.HTMLCanvasElement) {
                 return null;
@@ -2454,13 +2460,13 @@ layui.define(['jquery'], function (exports) {
                 return getSourceCanvas(self.$clone[0], self.image, options);
             }
 
-            var data = self.getData();
-            var originalWidth = data.width;
-            var originalHeight = data.height;
-            var aspectRatio = originalWidth / originalHeight;
-            var scaledWidth = void 0;
-            var scaledHeight = void 0;
-            var scaledRatio = void 0;
+            const data = self.getData();
+            const originalWidth = data.width;
+            const originalHeight = data.height;
+            const aspectRatio = originalWidth / originalHeight;
+            let scaledWidth = void 0;
+            let scaledHeight = void 0;
+            let scaledRatio = void 0;
 
             if ($.isPlainObject(options)) {
                 scaledWidth = options.width;
@@ -2476,11 +2482,11 @@ layui.define(['jquery'], function (exports) {
             }
 
             // The canvas element will use `Math.Math.floor` on a float number, so Math.floor first
-            var canvasWidth = Math.floor(scaledWidth || originalWidth);
-            var canvasHeight = Math.floor(scaledHeight || originalHeight);
+            const canvasWidth = Math.floor(scaledWidth || originalWidth);
+            const canvasHeight = Math.floor(scaledHeight || originalHeight);
 
-            var canvas = $('<canvas>')[0];
-            var context = canvas.getContext('2d');
+            const canvas = $('<canvas>')[0];
+            const context = canvas.getContext('2d');
 
             canvas.width = canvasWidth;
             canvas.height = canvasHeight;
@@ -2491,24 +2497,24 @@ layui.define(['jquery'], function (exports) {
             }
 
             // https://developer.mozilla.org/en-US/docs/Web/API/CanvasRenderingContext2D.drawImage
-            var parameters = function () {
-                var source = getSourceCanvas(self.$clone[0], self.image, options);
-                var sourceWidth = source.width;
-                var sourceHeight = source.height;
-                var canvasData = self.canvas;
-                var params = [source];
+            const parameters = function () {
+                const source = getSourceCanvas(self.$clone[0], self.image, options);
+                const sourceWidth = source.width;
+                const sourceHeight = source.height;
+                const canvasData = self.canvas;
+                const params = [source];
 
                 // Source canvas
-                var srcX = data.x + canvasData.naturalWidth * (Math.abs(data.scaleX || 1) - 1) / 2;
-                var srcY = data.y + canvasData.naturalHeight * (Math.abs(data.scaleY || 1) - 1) / 2;
-                var srcWidth = void 0;
-                var srcHeight = void 0;
+                let srcX = data.x + canvasData.naturalWidth * (Math.abs(data.scaleX || 1) - 1) / 2;
+                let srcY = data.y + canvasData.naturalHeight * (Math.abs(data.scaleY || 1) - 1) / 2;
+                let srcWidth = void 0;
+                let srcHeight = void 0;
 
                 // Destination canvas
-                var dstX = void 0;
-                var dstY = void 0;
-                var dstWidth = void 0;
-                var dstHeight = void 0;
+                let dstX = void 0;
+                let dstY = void 0;
+                let dstWidth = void 0;
+                let dstHeight = void 0;
 
                 if (srcX <= -originalWidth || srcX > sourceWidth) {
                     srcX = 0;
@@ -2579,8 +2585,8 @@ layui.define(['jquery'], function (exports) {
          * @param {Number} aspectRatio
          */
         setAspectRatio: function setAspectRatio(aspectRatio) {
-            var self = this;
-            var options = self.options;
+            const self = this;
+            const options = self.options;
 
             if (!self.disabled && !isUndefined(aspectRatio)) {
                 // 0 -> NaN
@@ -2603,10 +2609,10 @@ layui.define(['jquery'], function (exports) {
          * @param {String} mode (optional)
          */
         setDragMode: function setDragMode(mode) {
-            var self = this;
-            var options = self.options;
-            var croppable = void 0;
-            var movable = void 0;
+            const self = this;
+            const options = self.options;
+            let croppable = void 0;
+            let movable = void 0;
 
             if (self.loaded && !self.disabled) {
                 croppable = mode === 'crop';
@@ -2623,19 +2629,35 @@ layui.define(['jquery'], function (exports) {
         }
     };
 
-    var _createClass = function () { function defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if ("value" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } } return function (Constructor, protoProps, staticProps) { if (protoProps) defineProperties(Constructor.prototype, protoProps); if (staticProps) defineProperties(Constructor, staticProps); return Constructor; }; }();
+    const _createClass = function () {
+        function defineProperties(target, props) {
+            for (let i = 0; i < props.length; i++) {
+                const descriptor = props[i];
+                descriptor.enumerable = descriptor.enumerable || false;
+                descriptor.configurable = true;
+                if ("value" in descriptor) descriptor.writable = true;
+                Object.defineProperty(target, descriptor.key, descriptor);
+            }
+        }
+
+        return function (Constructor, protoProps, staticProps) {
+            if (protoProps) defineProperties(Constructor.prototype, protoProps);
+            if (staticProps) defineProperties(Constructor, staticProps);
+            return Constructor;
+        };
+    }();
 
     function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError("Cannot call a class as a function"); } }
 
-    var CLASS_HIDDEN = 'cropper-hidden';
-    var REGEXP_DATA_URL = /^data:/;
-    var REGEXP_DATA_URL_JPEG = /^data:image\/jpeg;base64,/;
+    const CLASS_HIDDEN = 'cropper-hidden';
+    const REGEXP_DATA_URL = /^data:/;
+    const REGEXP_DATA_URL_JPEG = /^data:image\/jpeg;base64,/;
 
-    var Cropper = function () {
+    const Cropper = function () {
         function Cropper(element, options) {
             _classCallCheck(this, Cropper);
 
-            var self = this;
+            const self = this;
 
             self.$element = $(element);
             self.options = $.extend({}, DEFAULTS, $.isPlainObject(options) && options);
@@ -2659,9 +2681,9 @@ layui.define(['jquery'], function (exports) {
         _createClass(Cropper, [{
             key: 'init',
             value: function init() {
-                var self = this;
-                var $this = self.$element;
-                var url = void 0;
+                const self = this;
+                const $this = self.$element;
+                let url = void 0;
 
                 if ($this.is('img')) {
                     self.isImg = true;
@@ -2689,7 +2711,7 @@ layui.define(['jquery'], function (exports) {
         }, {
             key: 'trigger',
             value: function trigger(type, data) {
-                var e = $.Event(type, data);
+                const e = $.Event(type, data);
 
                 this.$element.trigger(e);
 
@@ -2698,9 +2720,9 @@ layui.define(['jquery'], function (exports) {
         }, {
             key: 'load',
             value: function load(url) {
-                var self = this;
-                var options = self.options;
-                var $this = self.$element;
+                const self = this;
+                const options = self.options;
+                const $this = self.$element;
 
                 if (!url) {
                     return;
@@ -2724,7 +2746,7 @@ layui.define(['jquery'], function (exports) {
                     return;
                 }
 
-                var xhr = new XMLHttpRequest();
+                const xhr = new XMLHttpRequest();
 
                 xhr.onerror = $.proxy(function () {
                     self.clone();
@@ -2746,13 +2768,13 @@ layui.define(['jquery'], function (exports) {
         }, {
             key: 'read',
             value: function read(arrayBuffer) {
-                var self = this;
-                var options = self.options;
-                var orientation = getOrientation(arrayBuffer);
-                var image = self.image;
-                var rotate = 0;
-                var scaleX = 1;
-                var scaleY = 1;
+                const self = this;
+                const options = self.options;
+                const orientation = getOrientation(arrayBuffer);
+                const image = self.image;
+                let rotate = 0;
+                let scaleX = 1;
+                let scaleY = 1;
 
                 if (orientation > 1) {
                     self.url = arrayBufferToDataURL(arrayBuffer);
@@ -2763,34 +2785,34 @@ layui.define(['jquery'], function (exports) {
                             scaleX = -1;
                             break;
 
-                            // rotate left 180°
+                        // rotate left 180°
                         case 3:
                             rotate = -180;
                             break;
 
-                            // flip vertical
+                        // flip vertical
                         case 4:
                             scaleY = -1;
                             break;
 
-                            // flip vertical + rotate right 90°
+                        // flip vertical + rotate right 90°
                         case 5:
                             rotate = 90;
                             scaleY = -1;
                             break;
 
-                            // rotate right 90°
+                        // rotate right 90°
                         case 6:
                             rotate = 90;
                             break;
 
-                            // flip horizontal + rotate right 90°
+                        // flip horizontal + rotate right 90°
                         case 7:
                             rotate = 90;
                             scaleX = -1;
                             break;
 
-                            // rotate left 90°
+                        // rotate left 90°
                         case 8:
                             rotate = -90;
                             break;
@@ -2813,12 +2835,12 @@ layui.define(['jquery'], function (exports) {
         }, {
             key: 'clone',
             value: function clone() {
-                var self = this;
-                var options = self.options;
-                var $this = self.$element;
-                var url = self.url;
-                var crossOrigin = '';
-                var crossOriginUrl = void 0;
+                const self = this;
+                const options = self.options;
+                const $this = self.$element;
+                const url = self.url;
+                let crossOrigin = '';
+                let crossOriginUrl = void 0;
 
                 if (options.checkCrossOrigin && isCrossOriginURL(url)) {
                     crossOrigin = $this.prop('crossOrigin');
@@ -2836,7 +2858,7 @@ layui.define(['jquery'], function (exports) {
                 self.crossOrigin = crossOrigin;
                 self.crossOriginUrl = crossOriginUrl;
 
-                var image = document.createElement('img');
+                const image = document.createElement('img');
 
                 if (crossOrigin) {
                     image.crossOrigin = crossOrigin;
@@ -2844,7 +2866,7 @@ layui.define(['jquery'], function (exports) {
 
                 image.src = crossOriginUrl || url;
 
-                var $clone = $(image);
+                const $clone = $(image);
 
                 self.$clone = $clone;
 
@@ -2861,9 +2883,9 @@ layui.define(['jquery'], function (exports) {
         }, {
             key: 'start',
             value: function start() {
-                var self = this;
-                var $clone = self.$clone;
-                var $image = self.$element;
+                const self = this;
+                const $clone = self.$clone;
+                let $image = self.$element;
 
                 if (!self.isImg) {
                     $clone.off('error', self.stop);
@@ -2884,7 +2906,7 @@ layui.define(['jquery'], function (exports) {
         }, {
             key: 'stop',
             value: function stop() {
-                var self = this;
+                const self = this;
 
                 self.$clone.remove();
                 self.$clone = null;
@@ -2892,10 +2914,10 @@ layui.define(['jquery'], function (exports) {
         }, {
             key: 'build',
             value: function build() {
-                var self = this;
-                var options = self.options;
-                var $this = self.$element;
-                var $clone = self.$clone;
+                const self = this;
+                const options = self.options;
+                const $this = self.$element;
+                const $clone = self.$clone;
 
                 if (!self.loaded) {
                     return;
@@ -2906,9 +2928,9 @@ layui.define(['jquery'], function (exports) {
                     self.unbuild();
                 }
 
-                var $cropper = $(TEMPLATE);
-                var $cropBox = $cropper.find('.cropper-crop-box');
-                var $face = $cropBox.find('.cropper-face');
+                const $cropper = $(TEMPLATE);
+                const $cropBox = $cropper.find('.cropper-crop-box');
+                const $face = $cropBox.find('.cropper-face');
 
                 // Create cropper elements
                 self.$container = $this.parent();
@@ -2986,7 +3008,7 @@ layui.define(['jquery'], function (exports) {
         }, {
             key: 'unbuild',
             value: function unbuild() {
-                var self = this;
+                const self = this;
 
                 if (!self.ready) {
                     return;
@@ -3039,31 +3061,34 @@ layui.define(['jquery'], function (exports) {
     $.extend(Cropper.prototype, change);
     $.extend(Cropper.prototype, methods);
 
-    var NAMESPACE = 'cropper';
-    var OtherCropper = $.fn.cropper;
+    const NAMESPACE = 'cropper';
+    const OtherCropper = $.fn.cropper;
 
     $.fn.cropper = function jQueryCropper(option) {
-        for (var _len = arguments.length, args = Array(_len > 1 ? _len - 1 : 0), _key = 1; _key < _len; _key++) {
+        let args = Array(_len > 1 ? _len - 1 : 0);
+        let _len = arguments.length;
+        let _key = 1;
+        for (; _key < _len; _key++) {
             args[_key - 1] = arguments[_key];
         }
 
-        var result = void 0;
+        let result = void 0;
 
         this.each(function (i, element) {
-            var $this = $(element);
-            var data = $this.data(NAMESPACE);
+            const $this = $(element);
+            let data = $this.data(NAMESPACE);
 
             if (!data) {
                 if (/destroy/.test(option)) {
                     return;
                 }
 
-                var options = $.extend({}, $this.data(), $.isPlainObject(option) && option);
+                const options = $.extend({}, $this.data(), $.isPlainObject(option) && option);
                 $this.data(NAMESPACE, data = new Cropper(element, options));
             }
 
             if (typeof option === 'string') {
-                var fn = data[option];
+                const fn = data[option];
 
                 if ($.isFunction(fn)) {
                     result = fn.apply(data, args);
-- 
Gitee


From 2e99c9371f92a1f6a7a92d2d23c6269c46fcf1d2 Mon Sep 17 00:00:00 2001
From: fxw <fxw7468@qq.com>
Date: Tue, 17 Oct 2023 14:26:08 +0800
Subject: [PATCH 7/7] =?UTF-8?q?perf:=20=E2=9A=A1=20design,drawer,dtree=20?=
 =?UTF-8?q?=E6=A8=A1=E5=9D=97=E4=BB=A3=E7=A0=81=E6=95=B4=E7=90=86?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

---
 component/pear/module/design.js |   48 +-
 component/pear/module/drawer.js |   61 +-
 component/pear/module/dtree.js  | 2261 ++++++++++++++++---------------
 3 files changed, 1217 insertions(+), 1153 deletions(-)

diff --git a/component/pear/module/design.js b/component/pear/module/design.js
index 6bcf7ac..5d411f7 100644
--- a/component/pear/module/design.js
+++ b/component/pear/module/design.js
@@ -1,14 +1,15 @@
 layui.define(['layer', 'form'], function(exports) {
-	var layer = layui.layer,
+	let layer = layui.layer,
 		form = layui.form,
 		$ = layui.$,
 		key = '';
 	delHtml()
 	$('button').on('click', function() {
-		var _this = $(this),
+		let _this = $(this),
 			size = _this.data('size'),
 			type = _this.data('type'),
 			html = '';
+		const formElem = $('form');
 		key = randStrName();
 		switch (type) {
 			case 'text':
@@ -36,18 +37,17 @@ layui.define(['layer', 'form'], function(exports) {
 				html = submits(size)
 				break;
 			case 'del':
-				$('form').html("\n")
+				formElem.html("\n")
 				delHtml()
 				$('.code-show').text('')
-				return false
-				break;
+				return false;
 			default:
 				layer.msg('类型错误', {
 					icon: 2
 				})
 		}
 
-		$('form').append(html);
+		formElem.append(html);
 		form.render();
 		setHtml(html)
 	})
@@ -60,11 +60,12 @@ layui.define(['layer', 'form'], function(exports) {
 	}
 
 	function setHtml(html) {
-		var h = layui.data('form_html');
+		let _d;
+		const h = layui.data('form_html');
 		if (h && h.html) {
-			var _d = h.html + html
+			_d = h.html + html;
 		} else {
-			var _d = html
+			_d = html;
 		}
 		layui.data('form_html', {
 			key: 'html',
@@ -75,19 +76,18 @@ layui.define(['layer', 'form'], function(exports) {
 	}
 
 	function input(type, size) {
-		var name = type === 'text' ? '输入框' : (type === 'password' ? '密码框' : '');
-		var html = '  <div class="layui-form-item">\n' +
+		const name = type === 'text' ? '输入框' : (type === 'password' ? '密码框' : '');
+		return '  <div class="layui-form-item">\n' +
 			'    <label class="layui-form-label">' + name + '</label>\n' +
 			'    <div class="layui-input-' + size + '">\n' +
 			'      <input type="' + type + '" name="' + key + '" required  lay-verify="required" placeholder="请输入' + name +
 			'内容" autocomplete="off" class="layui-input">\n' +
 			'    </div>\n' +
 			'  </div>\n';
-		return html;
 	}
 
 	function select(size) {
-		var html = '  <div class="layui-form-item">\n' +
+		return '  <div class="layui-form-item">\n' +
 			'    <label class="layui-form-label">选择框</label>\n' +
 			'    <div class="layui-input-' + size + '">\n' +
 			'      <select name="' + key + '" lay-verify="required" lay-search>\n' +
@@ -100,11 +100,10 @@ layui.define(['layer', 'form'], function(exports) {
 			'      </select>\n' +
 			'    </div>\n' +
 			'  </div>\n';
-		return html;
 	}
 
 	function checkbox_a(size) {
-		var html = '  <div class="layui-form-item">\n' +
+		return '  <div class="layui-form-item">\n' +
 			'    <label class="layui-form-label">复选框</label>\n' +
 			'    <div class="layui-input-' + size + '">\n' +
 			'      <input type="checkbox" name="' + key + '[]" title="写作">\n' +
@@ -112,52 +111,47 @@ layui.define(['layer', 'form'], function(exports) {
 			'      <input type="checkbox" name="' + key + '[]" title="发呆">\n' +
 			'    </div>\n' +
 			'  </div>\n';
-		return html;
 	}
 
 	function checkbox_b(size) {
-		var html = '  <div class="layui-form-item">\n' +
+		return '  <div class="layui-form-item">\n' +
 			'    <label class="layui-form-label">开关</label>\n' +
 			'    <div class="layui-input-' + size + '">\n' +
 			'      <input type="checkbox" name="' + key + '" lay-skin="switch">\n' +
 			'    </div>\n' +
 			'  </div>\n';
-		return html;
 	}
 
 	function radio(size) {
-		var html = '  <div class="layui-form-item">\n' +
+		return '  <div class="layui-form-item">\n' +
 			'    <label class="layui-form-label">单选框</label>\n' +
 			'    <div class="layui-input-' + size + '">\n' +
 			'      <input type="radio" name="' + key + '" value="男" title="男">\n' +
 			'      <input type="radio" name="' + key + '" value="女" title="女" checked>\n' +
 			'    </div>\n' +
 			'  </div>\n';
-		return html;
 	}
 
 	function textarea(size) {
-		var html = '  <div class="layui-form-item layui-form-text">\n' +
+		return '  <div class="layui-form-item layui-form-text">\n' +
 			'    <label class="layui-form-label">文本域</label>\n' +
 			'    <div class="layui-input-' + size + '">\n' +
 			'      <textarea name="' + key + '" placeholder="请输入内容" class="layui-textarea"></textarea>\n' +
 			'    </div>\n' +
 			'  </div>\n';
-		return html;
 	}
 
 	function submits(size) {
-		var html = '  <div class="layui-form-item">\n' +
+		return '  <div class="layui-form-item">\n' +
 			'    <div class="layui-input-' + size + '">\n' +
 			'      <button class="layui-btn" lay-submit lay-filter="formDemo">立即提交</button>\n' +
 			'      <button type="reset" class="layui-btn layui-btn-primary">重置</button>\n' +
 			'    </div>\n' +
 			'  </div>\n';
-		return html;
 	}
 
 	function jscode() {
-		var html = '<script>\n' +
+		return '<script>\n' +
 			'  layui.use(\'form\', function(){\n' +
 			'    var form = layui.form;\n' +
 			'    form.on(\'submit(formDemo)\', function(data){\n' +
@@ -166,13 +160,13 @@ layui.define(['layer', 'form'], function(exports) {
 			'    });\n' +
 			'  });\n' +
 			'</script>';
-		return html;
 	}
 
 	function randStrName() {
 		return Math.random().toString(36).substr(8);
 	}
-	var jscodehtml = jscode();
+
+	const jscodehtml = jscode();
 	$('.js-show').text(jscodehtml)
 	form.on('submit(formDemo)', function(data) {
 		layer.msg(JSON.stringify(data.field));
diff --git a/component/pear/module/drawer.js b/component/pear/module/drawer.js
index a95e41a..d32b21b 100644
--- a/component/pear/module/drawer.js
+++ b/component/pear/module/drawer.js
@@ -4,14 +4,14 @@ layui.define(['jquery', 'element', 'layer', 'loading'], function (exports) {
 	/**
 	 * Drawer component
 	 * */
-	var MOD_NAME = 'drawer',
+	const MOD_NAME = 'drawer',
 		$ = layui.jquery,
 		element = layui.element,
 		layer = layui.layer,
 		loading = layui.loading;
 
 
-	var drawer = new function () {
+	const drawer = new function () {
 
 		/**
 		 * open drawer
@@ -20,9 +20,10 @@ layui.define(['jquery', 'element', 'layer', 'loading'], function (exports) {
 			//	默认使用 legacy 模式
 			if (option.legacy === undefined) {
 				option.legacy = true;
-			};
+			}
+
 			if (option.legacy) {
-				var obj = new mSlider({
+				const obj = new mSlider({
 					target: option.target,
 					dom: option.dom,
 					direction: option.direction,
@@ -41,7 +42,7 @@ layui.define(['jquery', 'element', 'layer', 'loading'], function (exports) {
 		this.style = layer.style;
 		this.close = layer.close;
 		this.closeAll = layer.closeAll;
-	}
+	};
 
 	/**
 	 *
@@ -51,10 +52,10 @@ layui.define(['jquery', 'element', 'layer', 'loading'], function (exports) {
 	 * @returns 原生 layer 的 index
 	 */
 	function layerDrawer(option) {
-		var opt = normalizeOption(option)
+		const opt = normalizeOption(option);
 		if (opt.target) appendToTarget(opt);
 		if (opt.url) loadFragment(opt);
-		var layerIndex = layer.open(opt);
+		const layerIndex = layer.open(opt);
 
 		return layerIndex;
 	}
@@ -65,7 +66,7 @@ layui.define(['jquery', 'element', 'layer', 'loading'], function (exports) {
 	 */
 	function loadFragment(option) {
 		option.success = Aspect(option.success, function (layero, index) {
-			var layerID = "#" + layero.attr("id");
+			const layerID = "#" + layero.attr("id");
 			loading.block({
 				type: 1,
 				elem: layerID,
@@ -87,8 +88,8 @@ layui.define(['jquery', 'element', 'layer', 'loading'], function (exports) {
 	 * @param {object} opt
 	 */
 	function appendToTarget(opt) {
-		var targetDOM = $(opt.target);
-		var contentDOM = $(opt.content);
+		const targetDOM = $(opt.target);
+		const contentDOM = $(opt.content);
 		contentDOM.appendTo(targetDOM);
 		opt.skin = getDrawerAnimationClass(opt.offset, true);
 		opt.offset = calcOffset(opt.offset, opt.area, targetDOM);
@@ -98,7 +99,7 @@ layui.define(['jquery', 'element', 'layer', 'loading'], function (exports) {
 		})
 		if (opt.shade) {
 			opt.success = Aspect(opt.success, function (layero, index) {
-				var shadeDOM = $("#layui-layer-shade" + index);
+				const shadeDOM = $("#layui-layer-shade" + index);
 				shadeDOM.css("position", "absolute");
 				shadeDOM.appendTo(layero.parent());
 			})
@@ -131,7 +132,7 @@ layui.define(['jquery', 'element', 'layer', 'loading'], function (exports) {
 			option.content = $(option.dom);
 		}
 		if (option.maskClose && option.shadeClose === undefined) {
-			option.shadeClose = (option.maskClose + "").toString() !== "false" ? true : false;
+			option.shadeClose = (option.maskClose + "").toString() !== "false";
 		}
 
 		option.type = 1
@@ -160,7 +161,7 @@ layui.define(['jquery', 'element', 'layer', 'loading'], function (exports) {
 	 * 计算抽屉宽高
 	 * @param {string} offset 抽屉方向 l = 左, r = 右, t = 上, b = 下
 	 * @param {string[] | string} drawerArea 抽屉大小,字符串数组格式：[width, height]，字符串格式：百分比或单位 px。
-	 * @returns 抽屉宽高数组
+	 * @returns (string[]|string)[]
 	 */
 	function calcDrawerArea(offset, drawerArea) {
 		if (drawerArea instanceof Array) {
@@ -181,12 +182,12 @@ layui.define(['jquery', 'element', 'layer', 'loading'], function (exports) {
 	 * 获取抽屉动画类
 	 * @param {string} offset 抽屉方向
 	 * @param {boolean} 是否 absolute 布局
-	 * @returns 抽屉入场动画类
+	 * @returns string
 	 */
 	function getDrawerAnimationClass(offset, isAbsolute) {
-		var positionAbsoluteClass = "position-absolute ";
-		var prefixClass = "pear-drawer pear-drawer-anim layui-anim layer-anim-";
-		var suffix = "rl";
+		const positionAbsoluteClass = "position-absolute ";
+		let prefixClass = "pear-drawer pear-drawer-anim layui-anim layer-anim-";
+		let suffix = "rl";
 
 		if (isAbsolute) {
 			prefixClass = positionAbsoluteClass + prefixClass;
@@ -214,22 +215,22 @@ layui.define(['jquery', 'element', 'layer', 'loading'], function (exports) {
 		if (offset === undefined || offset === "l" || offset === "t") {
 			offset = "lt";
 		} else if (offset === "r") {
-			var left;
+			let left;
 			if (area instanceof Array) {
 				area = area[0];
 			}
-			if (area.indexOf("%") != -1) {
+			if (area.indexOf("%") !== -1) {
 				left = targetEl.innerWidth() * (1 - area.replace("%", "") / 100);
 			} else {
 				left = targetEl.innerWidth() - area;
 			}
 			offset = [0, left];
 		} else if (offset === "b") {
-			var top;
+			let top;
 			if (area instanceof Array) {
 				area = area[1];
 			}
-			if (area.indexOf("%") != -1) {
+			if (area.indexOf("%") !== -1) {
 				top = targetEl.innerHeight() * (1 - area.replace("%", "") / 100);
 			} else {
 				top = targetEl.innerHeight() - area;
@@ -274,7 +275,7 @@ layui.define(['jquery', 'element', 'layer', 'loading'], function (exports) {
 			"distance": d.distance || "60%",
 			"dom": this.Q(d.dom),
 			"time": d.time || "",
-			"maskClose": (d.maskClose + "").toString() !== "false" ? true : false,
+			"maskClose": (d.maskClose + "").toString() !== "false",
 			"callback": d.callback || ""
 		};
 		this.rnd = this.rnd();
@@ -290,7 +291,7 @@ layui.define(['jquery', 'element', 'layer', 'loading'], function (exports) {
 			return document.querySelectorAll(d)
 		},
 		isMobile: function () {
-			return navigator.userAgent.match(/(iPhone|iPod|Android|ios)/i) ? true : false
+			return !!navigator.userAgent.match(/(iPhone|iPod|Android|ios)/i)
 		},
 		addEvent: function (f, e, d) {
 			if (f.attachEvent) {
@@ -303,15 +304,15 @@ layui.define(['jquery', 'element', 'layer', 'loading'], function (exports) {
 			return Math.random().toString(36).substr(2, 6)
 		},
 		init: function () {
-			var g = this;
+			const g = this;
 			if (!g.dom) {
 				console.log("未正确绑定弹窗容器");
 				return
 			}
 			g.dom.style.display = "block";  // 兼容 layer 捕获层
-			var d = document.createElement("div");
-			var e = document.createElement("div");
-			var f = document.createElement("div");
+			const d = document.createElement("div");
+			const e = document.createElement("div");
+			const f = document.createElement("div");
 			d.setAttribute("class", "mSlider-main ms-" + g.rnd);
 			e.setAttribute("class", "mSlider-inner");
 			f.setAttribute("class", "mSlider-mask");
@@ -379,7 +380,7 @@ layui.define(['jquery', 'element', 'layer', 'loading'], function (exports) {
 			g.events()
 		},
 		open: function () {
-			var d = this;
+			const d = this;
 			d.wrap.style.display = "block";
 			setTimeout(function () {
 				d.inner.style.transform = "translate3d(0,0,0)";
@@ -393,7 +394,7 @@ layui.define(['jquery', 'element', 'layer', 'loading'], function (exports) {
 			}
 		},
 		close: function () {
-			var d = this;
+			const d = this;
 			d.timer && clearTimeout(d.timer);
 			d.inner.style.webkitTransform = "translate3d(" + d.translate + ")";
 			d.inner.style.transform = "translate3d(" + d.translate + ")";
@@ -405,7 +406,7 @@ layui.define(['jquery', 'element', 'layer', 'loading'], function (exports) {
 			}, 300)
 		},
 		events: function () {
-			var d = this;
+			const d = this;
 			d.addEvent(d.mask, "touchmove", function (f) {
 				f.preventDefault()
 			});
diff --git a/component/pear/module/dtree.js b/component/pear/module/dtree.js
index 21fcbab..3dc741e 100644
--- a/component/pear/module/dtree.js
+++ b/component/pear/module/dtree.js
@@ -1,21 +1,30 @@
 layui.define(['jquery','layer','form'], function(exports) {
-    var $ = layui.$,
+    const entityMap = {
+        escape: {
+            "&" : "&amp;",
+            "<" : "&lt;",
+            ">" : "&gt;",
+            "'" : "&quo;"
+        }
+    };
+    const $ = layui.$,
         layer = layui.layer,
         form = layui.form;
 
     // 树的公共定义样式汇总
-    var LI_NAV_CHILD = "dtree-nav-ul-sid", LI_NAV_ITEM = "dtree-nav-item",
-        LI_DIV_ITEM = "dtree-nav-div",  DTREEFONTSPECIAL="dtreefont-special", NONETITLE="dtree-none-text",
+    const LI_NAV_CHILD = "dtree-nav-ul-sid", LI_NAV_ITEM = "dtree-nav-item",
+        LI_DIV_ITEM = "dtree-nav-div", DTREEFONTSPECIAL = "dtreefont-special", NONETITLE = "dtree-none-text",
         LI_DIV_MENUBAR = "dtree-menubar",
-        LI_DIV_TOOLBAR = "dtree-toolbar", TOOLBAR_TOOL = "dtree-toolbar-tool",  TOOLBAR_TOOL_EM = "dtree-toolbar-fixed",
+        LI_DIV_TOOLBAR = "dtree-toolbar", TOOLBAR_TOOL = "dtree-toolbar-tool", TOOLBAR_TOOL_EM = "dtree-toolbar-fixed",
         LI_DIV_CHECKBAR = "dtree-nav-checkbox-div",
         LI_CLICK_CHECKBAR = "d-click-checkbar",		//绑定点击复选框时需要用到
-        LI_DIV_TEXT_CLASS = "t-click", UL_ROOT="dtree",
-        LI_NAV_FIRST_LINE = "dtree-nav-first-line", LI_NAV_LINE = "dtree-nav-line", LI_NAV_LAST_LINE = "dtree-nav-last-line";
+        LI_DIV_TEXT_CLASS = "t-click", UL_ROOT = "dtree",
+        LI_NAV_FIRST_LINE = "dtree-nav-first-line", LI_NAV_LINE = "dtree-nav-line",
+        LI_NAV_LAST_LINE = "dtree-nav-last-line";
 
 
     // 树的公共指定
-    var NAV_THIS = "dtree-nav-this",	//当前节点
+    const NAV_THIS = "dtree-nav-this",	//当前节点
         NAV_SHOW = "dtree-nav-show",	//显示子节点
         NAV_HIDE = "dtree-nav-hide",	//隐藏节点
         NAV_DIS = "dtree-disabled",		//禁用节点
@@ -29,7 +38,7 @@ layui.define(['jquery','layer','form'], function(exports) {
         DTrees = {};				    //当前被实例化的树的集合
 
     // 树的自定义图标
-    var DTREEFONT = "dtreefont",									//默认使用图标字体
+    const DTREEFONT = "dtreefont",									//默认使用图标字体
         LI_DIV_CHECKBAR_ON = "dtree-icon-fuxuankuangxuanzhong", 	//复选框选中图标
         LI_DIV_CHECKBAR_OUT = "dtree-icon-fuxuankuang", 			//复选框未选中图标
         LI_DIV_CHECKBAR_NOALL = "dtree-icon-fuxuankuang-banxuan",	//复选框半选图标
@@ -48,31 +57,31 @@ layui.define(['jquery','layer','form'], function(exports) {
         LI_DIV_TOOLBAR_DEL = "dtree-icon-roundclose";				//toolbar的删除图标
 
     // 树的非叶子节点图标集合
-    var nodeIconArray = {
+    const nodeIconArray = {
         "-1": {"open": "dtree-icon-null-open", "close": "dtree-icon-null-close"},			//未指定
-        "0" : {"open": "dtree-icon-wenjianjiazhankai", "close": "dtree-icon-weibiaoti5"},	//文件夹(二级图标默认样式)
-        "1" : {"open": "dtree-icon-jian", "close": "dtree-icon-jia"},						//+-图标(一级图标默认样式)
-        "2" : {"open": "dtree-icon-xiangxia1", "close": "dtree-icon-xiangyou"}				//箭头图标
+        "0": {"open": "dtree-icon-wenjianjiazhankai", "close": "dtree-icon-weibiaoti5"},	//文件夹(二级图标默认样式)
+        "1": {"open": "dtree-icon-jian", "close": "dtree-icon-jia"},						//+-图标(一级图标默认样式)
+        "2": {"open": "dtree-icon-xiangxia1", "close": "dtree-icon-xiangyou"}				//箭头图标
     };
 
     // 树的叶子节点图标集合
-    var leafIconArray = {
+    const leafIconArray = {
         "-1": "dtree-icon-null",				//未指定
-        "0" : "dtree-icon-weibiaoti5", 			//文件夹
-        "1" : "dtree-icon-yonghu",				//人员
-        "2" : "dtree-icon-fenzhijigou",			//机构
-        "3" : "dtree-icon-fenguangbaobiao",		//报表
-        "4" : "dtree-icon-xinxipilu",			//信息
-        "5" : "dtree-icon-shuye1",				//叶子(二级图标默认样式)
-        "6" : "dtree-icon-caidan_xunzhang",	    //勋章
-        "7" : "dtree-icon-normal-file",		    //文件
-        "8" : "dtree-icon-dian",				//小圆点（一级图标默认样式）
-        "9" : "dtree-icon-set-sm",				//齿轮
-        "10" : "dtree-icon-rate"				//星星
+        "0": "dtree-icon-weibiaoti5", 			//文件夹
+        "1": "dtree-icon-yonghu",				//人员
+        "2": "dtree-icon-fenzhijigou",			//机构
+        "3": "dtree-icon-fenguangbaobiao",		//报表
+        "4": "dtree-icon-xinxipilu",			//信息
+        "5": "dtree-icon-shuye1",				//叶子(二级图标默认样式)
+        "6": "dtree-icon-caidan_xunzhang",	    //勋章
+        "7": "dtree-icon-normal-file",		    //文件
+        "8": "dtree-icon-dian",				//小圆点（一级图标默认样式）
+        "9": "dtree-icon-set-sm",				//齿轮
+        "10": "dtree-icon-rate"				//星星
     };
 
     // 树的自定义样式
-    var DTREE = "dtree-",			//自定义样式前缀
+    const DTREE = "dtree-",			//自定义样式前缀
         ITEMTHIS = "-item-this",	//自定义样式当前行选中后缀
         ITEM = "-item",				//自定义样式当前行后缀
         DFONT = "-dtreefont",		//自定义样式图标样式后缀
@@ -82,13 +91,13 @@ layui.define(['jquery','layer','form'], function(exports) {
         CHS = "-choose";			//自定义样式复选框选中样式后缀
 
     // 树自定义操作事件名称集合	绑定dtree-click的事件
-    var eventName = {
+    const eventName = {
         checkNodeClick: "checkNodeClick",	//点击复选框
         itemNodeClick: "itemNodeClick"		//点击子节点div
     };
 
     // 树默认toolbar提供的功能集合	绑定dtree-tool的事件
-    var defaultTool = {
+    const defaultTool = {
         pulldown: "pulldown",		//点击展开当前节点下的全部节点
         pullup: "pullup",			//点击收缩当前节点下的全部节点
         addTool: "addToolbar",		//点击toolbar新增
@@ -97,7 +106,7 @@ layui.define(['jquery','layer','form'], function(exports) {
     };
 
     // 树默认menubar提供的功能集合	绑定dtree-menu的事件
-    var defaultMenu = {
+    const defaultMenu = {
         moveDown: "moveDown",		//menubar展开全部节点
         moveUp: "moveUp",			//menubar收缩全部节点
         refresh: "refresh",			//menubar刷新树
@@ -111,10 +120,10 @@ layui.define(['jquery','layer','form'], function(exports) {
     // 树的公共事件
     var event = {
         getElemId: function(options){	// 根据传入的参数获取ID
-            var elem = options.elem || "";
-            var obj = options.obj || $(elem);
+            const elem = options.elem || "";
+            const obj = options.obj || $(elem);
 
-            if (obj.length == 0) {	//页面中未找到绑定id
+            if (obj.length === 0) {	//页面中未找到绑定id
                 return "";
             } else {
                 return $(obj)[0].id;
@@ -129,15 +138,15 @@ layui.define(['jquery','layer','form'], function(exports) {
             return str.replace(entityReg.unescape, function(match){return entityMap.unescape[match];});
         },
         cloneObj: function (obj, filter) {  //深复制对象方法
-            var newObj = {};
+            let newObj = {};
             if (obj instanceof Array) {
                 newObj = [];
             }
-            var str = "";
+            let str = "";
             if(typeof filter !== 'undefined') {str = filter.join(",");}
-            for (var key in obj) {
-                if(str.indexOf(key) == -1){
-                    var val = obj[key];
+            for (const key in obj) {
+                if(str.indexOf(key) === -1){
+                    const val = obj[key];
                     newObj[key] = typeof val === 'object' ? event.cloneObj(val, typeof filter !== undefined ? filter : []): val;
                 }
 
@@ -150,28 +159,20 @@ layui.define(['jquery','layer','form'], function(exports) {
     };
 
     // 特殊符号转义
-    var keys = Object.keys || function(obj) {
+    const keys = Object.keys || function (obj) {
         obj = Object(obj);
-        var arr = [];
-        for(var a in obj) arr.push(a);
+        const arr = [];
+        for (const a in obj) arr.push(a);
         return arr;
     };
-    var invert = function(obj){
+    const invert = function (obj) {
         obj = Object(obj);
-        var result = {};
-        for(var a in obj) result[obj[a]] = a;
+        const result = {};
+        for (const a in obj) result[obj[a]] = a;
         return result;
     };
-    var entityMap = {
-        escape: {
-            "&" : "&amp;",
-            "<" : "&lt;",
-            ">" : "&gt;",
-            "'" : "&quo;"
-        }
-    };
     entityMap.unescape = invert(entityMap.escape);
-    var entityReg = {
+    const entityReg = {
         escape: RegExp('[' + keys(entityMap.escape).join('') + ']', 'g'),
         unescape: RegExp('(' + keys(entityMap.unescape).join('|') + ')', 'g')
     };
@@ -179,8 +180,8 @@ layui.define(['jquery','layer','form'], function(exports) {
     //异步加载接口
     var AjaxHelper = {
         request : function(config) {
-            var data = config.data ? config.data : {};
-            var async = (typeof (config.async) === "boolean") ? config.async : true;
+            const data = config.data ? config.data : {};
+            const async = (typeof (config.async) === "boolean") ? config.async : true;
             $.ajax({
                 type : config.type ? config.type : "POST",
                 headers : config.headers,
@@ -220,8 +221,8 @@ layui.define(['jquery','layer','form'], function(exports) {
             });
         },
         serialize: function(first, param){	//json序列化   key=value&key1=value1
-            var p = first;
-            for (var key in param) {
+            let p = first;
+            for (const key in param) {
                 p += key + "=" + param[key] + "&";
             }
             p = p.substring(0, p.length-1);
@@ -231,7 +232,7 @@ layui.define(['jquery','layer','form'], function(exports) {
 
     /** 树类 Class定义 */
     var DTree = function(options){
-        var _this = this;
+        const _this = this;
         /** 默认赋值**/
         this.formatter = {	// 数据过滤
             title: false    // 文字，默认不开启
@@ -613,7 +614,7 @@ layui.define(['jquery','layer','form'], function(exports) {
         this.nodeIconArray = $.extend(nodeIconArray, this.options.nodeIconArray) || this.nodeIconArray;	//用户自定义非叶子节点图标集合，node
         this.leafIconArray = $.extend(leafIconArray, this.options.leafIconArray) || this.leafIconArray;	//用户自定义叶子节点图标集合，leaf
         this.skin = this.options.skin || this.skin;	//自定义样式
-        if(this.skin == "layui"){ //layui主题
+        if(this.skin === "layui"){ //layui主题
             this.line = (typeof (this.options.line) === "boolean") ? this.options.line : true; //开启树线，默认开启
             this.ficon = this.options.ficon || this.ficon; //一级图标样式，0：文件夹，1：人员，2：机构，3：报表，4：信息，5：叶子，6：勋章，7：文件，8：小圆点，9：齿轮，10：星星， -1：不显示一级图标。默认'7'
             this.fnodeIcon = (typeof this.ficon === 'string' || typeof this.ficon === 'number') ? (this.ficon == "-1" ? "-1" : "1") : this.ficon[0]; //一级图标中的node节点图标。0：文件夹，1：+、-，2：三角形， -1：不显示二级图标，默认'1'
@@ -621,7 +622,7 @@ layui.define(['jquery','layer','form'], function(exports) {
             this.icon = this.options.icon || this.icon;	//二级图标样式，0：文件夹，1：人员，2：机构，3：报表，4：信息，5：叶子，6：勋章，7：文件，8：小圆点，9：齿轮，10：星星， -1：不显示二级图标。默认'-1'
             this.nodeIcon = (typeof this.icon === 'string' || typeof this.icon === 'number') ? (this.icon == "-1" ? "-1" : "-1") : this.icon[0]; //二级图标中的node节点图标。0：文件夹，1：+、-，2：三角形， -1：不显示二级图标，默认'-1'
             this.leafIcon = (typeof this.icon === 'string' || typeof this.icon === 'number') ? this.icon : this.icon[1]; //二级图标中的leaf节点图标
-        } else if(this.skin == "laySimple"){ //laySimple主题
+        } else if(this.skin === "laySimple"){ //laySimple主题
             this.line = (typeof (this.options.line) === "boolean") ? this.options.line : false; //开启树线，默认不开启
             this.ficon = this.options.ficon || this.ficon; //一级图标样式，0：文件夹，1：人员，2：机构，3：报表，4：信息，5：叶子，6：勋章，7：文件，8：小圆点，9：齿轮，10：星星， -1：不显示一级图标。默认'-1'
             this.fnodeIcon = (typeof this.ficon === 'string' || typeof this.ficon === 'number') ? (this.ficon == "-1" ? "-1" : "2") : this.ficon[0]; //一级图标中的node节点图标。0：文件夹，1：+、-，2：三角形， -1：不显示二级图标，默认'2'
@@ -744,26 +745,26 @@ layui.define(['jquery','layer','form'], function(exports) {
      * @Desc: 渲染下拉树的Dom结构
      */
     DTree.prototype.renderSelectDom = function() {
-        var _this = this;
-        var rootId = _this.obj[0].id;
-        
+        const _this = this;
+        const rootId = _this.obj[0].id;
+
         // 设置自定义表单隐藏域
-        var selectInputName = _this.selectInputName;
-        var selectInput = [];
-        for(var key in selectInputName) {
+        const selectInputName = _this.selectInputName;
+        const selectInput = [];
+        for(const key in selectInputName) {
         	selectInput.push('<input type="hidden" dtree-id="' + rootId + '" dtree-node="' + key + '" name="' + selectInputName[key] + '" value="" readonly>');
         }
 
         // 设置html
-        var prevHtml = ['<div class="layui-unselect layui-form-select" dtree-id="' + rootId + '" dtree-select="' + _this.selectDiv + '">',
-			            '<div class="layui-select-title">', selectInput.join(""), 
-			            '<input type="text" dtree-id="' + rootId + '" id="' +  _this.selectTipsName +'_id" name="' + _this.selectTipsName + '" placeholder="' + _this.selectTips + '" value="" readonly class="layui-input layui-unselect">',
-			            '<i class="layui-edge"></i>',
-			            '</div></div>'].join('');
+        const prevHtml = ['<div class="layui-unselect layui-form-select" dtree-id="' + rootId + '" dtree-select="' + _this.selectDiv + '">',
+            '<div class="layui-select-title">', selectInput.join(""),
+            '<input type="text" dtree-id="' + rootId + '" id="' + _this.selectTipsName + '_id" name="' + _this.selectTipsName + '" placeholder="' + _this.selectTips + '" value="" readonly class="layui-input layui-unselect">',
+            '<i class="layui-edge"></i>',
+            '</div></div>'].join('');
 
         _this.obj.before(prevHtml);
 
-        var cardStyle = "style=";
+        let cardStyle = "style=";
         if(this.selectCardHeight) {
         	cardStyle += "'height:"+_this.selectCardHeight+"px'";
         }
@@ -775,26 +776,26 @@ layui.define(['jquery','layer','form'], function(exports) {
      * @Desc: 重新渲染下拉树的Dom结构
      */
     DTree.prototype.reloadSelectDom = function() {
-        var _this = this;
-        var rootId = _this.obj[0].id;
-        
+        const _this = this;
+        const rootId = _this.obj[0].id;
+
         // 设置自定义表单隐藏域
-        var selectInputName = _this.selectInputName;
-        var selectInput = [];
-        for(var key in selectInputName) {
+        const selectInputName = _this.selectInputName;
+        const selectInput = [];
+        for(const key in selectInputName) {
         	selectInput.push('<input type="hidden" dtree-id="' + rootId + '" dtree-node="' + key + '" name="' + selectInputName[key] + '" value="" readonly>');
         }
-        
-        $("div[dtree-id='"+rootId+"'][dtree-select='"+_this.selectDiv+"']").find("div.layui-select-title").html("");
+        const selectDiv = $("div[dtree-id='" + rootId + "'][dtree-select='" + _this.selectDiv + "']");
+        selectDiv.find("div.layui-select-title").html("");
 
         // 设置html
-        var prevHtml = [selectInput.join(""), 
-			            '<input type="text" dtree-id="' + rootId + '" id="' +  _this.selectTipsName +'_id" name="' + _this.selectTipsName + '" placeholder="' + _this.selectTips + '" value="" readonly class="layui-input layui-unselect">',
-			            '<i class="layui-edge"></i>'].join('');
+        const prevHtml = [selectInput.join(""),
+            '<input type="text" dtree-id="' + rootId + '" id="' + _this.selectTipsName + '_id" name="' + _this.selectTipsName + '" placeholder="' + _this.selectTips + '" value="" readonly class="layui-input layui-unselect">',
+            '<i class="layui-edge"></i>'].join('');
 
-        $("div[dtree-id='"+rootId+"'][dtree-select='"+_this.selectDiv+"']").find("div.layui-select-title").html(prevHtml);
+        selectDiv.find("div.layui-select-title").html(prevHtml);
 
-        var cardStyle = "style=";
+        let cardStyle = "style=";
         if(this.selectCardHeight) {
         	cardStyle += "'height:"+_this.selectCardHeight+"px'";
         }
@@ -806,12 +807,12 @@ layui.define(['jquery','layer','form'], function(exports) {
      * @Param: param： input中的值对应树数据的ID值\当前树选中的数据JSON对象，可不传，不传的话则树内部读取
      */
     DTree.prototype.selectVal = function(param) {
-        var _this = this;
-        var rootId = _this.obj[0].id;
-        var selectInputName = _this.selectInputName;
-        var selectTipsNameValue = "";
-        var selectValues = {};
-        
+        const _this = this;
+        const rootId = _this.obj[0].id;
+        const selectInputName = _this.selectInputName;
+        let selectTipsNameValue = "";
+        const selectValues = {};
+
         // 如果开启了复选框，则此方法用来取值
         if(_this.checkbar) {
         	return _this.selectCheckboxVal();
@@ -825,9 +826,10 @@ layui.define(['jquery','layer','form'], function(exports) {
         }
         
         selectTipsNameValue = param["context"];
-    	for(var key in selectInputName) {
+        const selectDiv = $("div[dtree-select='" + _this.selectDiv + "']");
+    	for(const key in selectInputName) {
     		selectValues[selectInputName[key]] = param[key];
-    		$("div[dtree-select='" + _this.selectDiv + "']").find("input[dtree-id='" + rootId + "'][name='"+selectInputName[key]+"']").val(param[key] || "");
+            selectDiv.find("input[dtree-id='" + rootId + "'][name='"+selectInputName[key]+"']").val(param[key] || "");
     	}
     	
     	if(param["nodeId"] && !param["context"]) {
@@ -835,7 +837,7 @@ layui.define(['jquery','layer','form'], function(exports) {
     	}
     	
         // 返显提示输入框值
-        $("div[dtree-select='" + _this.selectDiv + "']").find("input[dtree-id='" + rootId + "'][name='"+_this.selectTipsName+"']").val(selectTipsNameValue || "");
+        selectDiv.find("input[dtree-id='" + rootId + "'][name='"+_this.selectTipsName+"']").val(selectTipsNameValue || "");
         
         // 返回隐藏域中的值
         return selectValues;
@@ -845,22 +847,23 @@ layui.define(['jquery','layer','form'], function(exports) {
      * @Desc: 设置复选框模式中的下拉树的选中值
      */
     DTree.prototype.selectCheckboxVal = function() {
-    	var _this = this;
-    	var rootId = _this.obj[0].id;
-    	var selectInputName = _this.selectInputName;
-    	
-    	// 获取全部复选框选中节点
-    	var param = _this.getCheckbarJsonArrParam();
-    	
-    	selectTipsNameValue = param["context"];
-    	var selectValues = {};
-    	for(var key in selectInputName) {
-    		var value = param[key].join(",");
-    		selectValues[selectInputName[key]] = value;
-    		$("div[dtree-select='" + _this.selectDiv + "']").find("input[dtree-id='" + rootId + "'][name='"+selectInputName[key]+"']").val(value);
+        const _this = this;
+        const rootId = _this.obj[0].id;
+        const selectInputName = _this.selectInputName;
+
+        // 获取全部复选框选中节点
+        const param = _this.getCheckbarJsonArrParam();
+
+        selectTipsNameValue = param["context"];
+        const selectValues = {};
+        const selectDiv = $("div[dtree-select='" + _this.selectDiv + "']");
+        for(const key in selectInputName) {
+            const value = param[key].join(",");
+            selectValues[selectInputName[key]] = value;
+            selectDiv.find("input[dtree-id='" + rootId + "'][name='"+selectInputName[key]+"']").val(value);
     	}
-    	
-    	$("div[dtree-select='" + _this.selectDiv + "']").find("input[dtree-id='" + rootId + "'][name='"+_this.selectTipsName+"']").val(selectTipsNameValue);
+
+        selectDiv.find("input[dtree-id='" + rootId + "'][name='"+_this.selectTipsName+"']").val(selectTipsNameValue);
     	
     	// 返回隐藏域中的值
         return selectValues;
@@ -870,9 +873,9 @@ layui.define(['jquery','layer','form'], function(exports) {
      * @Desc: 重置下拉树的值，1.表单清空；2.节点重置；3.复选框重置
      */
     DTree.prototype.selectResetVal = function() {
-    	var _this = this;
-    	var rootId = _this.obj[0].id;
-    	// 表单清空
+        const _this = this;
+        const rootId = _this.obj[0].id;
+        // 表单清空
         $("input[dtree-id='"+rootId+"']").val("");
         // 节点重置
         _this.cancelNavThis();
@@ -888,7 +891,7 @@ layui.define(['jquery','layer','form'], function(exports) {
      * @Desc: 树使用的最终主题方案
      */
     DTree.prototype.ensureTheme = function(){
-        var _this = this;
+        const _this = this;
 
         // 确认style
         this.style.item = DTREE + this.skin + ITEM;
@@ -900,25 +903,25 @@ layui.define(['jquery','layer','form'], function(exports) {
         this.style.chs = DTREE + this.skin + CHS;
 
         // 确认usefontStyle
-        var iconfont = this.iconfont;
-        var iconfonts = [];
+        const iconfont = this.iconfont;
+        let iconfonts = [];
         if(typeof iconfont === 'string') {
             iconfonts.push(iconfont);
         } else {
             iconfonts = iconfont;
         }
 
-        var iconfontStyle = this.iconfontStyle;
-        var iconfontStyles = [];
-        if(iconfontStyle.length == undefined) {
+        const iconfontStyle = this.iconfontStyle;
+        let iconfontStyles = [];
+        if(iconfontStyle.length === undefined) {
             iconfontStyles.push(iconfontStyle);
         } else {
             iconfontStyles = iconfontStyle;
         }
 
-        for(var i=0; i<iconfonts.length; i++){
-            var ifont = iconfonts[i];
-            var ifontStyle = iconfontStyles[i];
+        for(let i=0; i<iconfonts.length; i++){
+            const ifont = iconfonts[i];
+            const ifontStyle = iconfontStyles[i];
             if(typeof ifontStyle !== 'undefined') {
                 // 判断，赋值
                 this.useDefaultOrUserDefineFnodeStyle(ifont, ifontStyle.fnode);
@@ -938,37 +941,37 @@ layui.define(['jquery','layer','form'], function(exports) {
      * @Param: fnode： 当前的图标class实际图标，如 dtree-icon-jia1
      */
     DTree.prototype.useDefaultOrUserDefineFnodeStyle = function(ifont, fnode){
-        var _this = this;
-        var tempOpen = this.usefontStyle.fnode.node.open;
-        var tempClose = this.usefontStyle.fnode.node.close;
-        var tempLeaf = this.usefontStyle.fnode.leaf;
+        const _this = this;
+        const tempOpen = this.usefontStyle.fnode.node.open;
+        const tempClose = this.usefontStyle.fnode.node.close;
+        const tempLeaf = this.usefontStyle.fnode.leaf;
 
         if(typeof fnode === 'undefined'){
-            this.usefontStyle.fnode.node.open = (tempOpen == "") ? (ifont + " " + this.nodeIconArray[this.fnodeIcon]["open"]) : tempOpen; // 一级图标中的node节点open图标
-            this.usefontStyle.fnode.node.close = (tempClose == "") ? (ifont + " " + this.nodeIconArray[this.fnodeIcon]["close"]) : tempClose; // 一级图标中的node节点close图标
-            this.usefontStyle.fnode.leaf = (tempLeaf == "") ? (ifont + " " + this.leafIconArray[this.fleafIcon]) : tempLeaf; // 一级图标中的node节点的leaf图标
+            this.usefontStyle.fnode.node.open = (tempOpen === "") ? (ifont + " " + this.nodeIconArray[this.fnodeIcon]["open"]) : tempOpen; // 一级图标中的node节点open图标
+            this.usefontStyle.fnode.node.close = (tempClose === "") ? (ifont + " " + this.nodeIconArray[this.fnodeIcon]["close"]) : tempClose; // 一级图标中的node节点close图标
+            this.usefontStyle.fnode.leaf = (tempLeaf === "") ? (ifont + " " + this.leafIconArray[this.fleafIcon]) : tempLeaf; // 一级图标中的node节点的leaf图标
         } else {
-            var node = fnode.node;
-            var leaf = fnode.leaf;
+            const node = fnode.node;
+            const leaf = fnode.leaf;
             if(typeof node === 'undefined'){
-                this.usefontStyle.fnode.node.open = (tempOpen == "") ? (ifont + " " + this.nodeIconArray[this.fnodeIcon]["open"]) : tempOpen; // 一级图标中的node节点open图标
-                this.usefontStyle.fnode.node.close = (tempClose == "") ? (ifont + " " + this.nodeIconArray[this.fnodeIcon]["close"]) : tempClose; // 一级图标中的node节点close图标
+                this.usefontStyle.fnode.node.open = (tempOpen === "") ? (ifont + " " + this.nodeIconArray[this.fnodeIcon]["open"]) : tempOpen; // 一级图标中的node节点open图标
+                this.usefontStyle.fnode.node.close = (tempClose === "") ? (ifont + " " + this.nodeIconArray[this.fnodeIcon]["close"]) : tempClose; // 一级图标中的node节点close图标
             } else {
-                var open = node.open;
-                var close = node.close;
+                const open = node.open;
+                const close = node.close;
                 if(typeof open === 'undefined'){
-                    this.usefontStyle.fnode.node.open = (tempOpen == "") ? (ifont + " " + this.nodeIconArray[this.fnodeIcon]["open"]) : tempOpen; // 一级图标中的node节点open图标
+                    this.usefontStyle.fnode.node.open = (tempOpen === "") ? (ifont + " " + this.nodeIconArray[this.fnodeIcon]["open"]) : tempOpen; // 一级图标中的node节点open图标
                 } else {
                     this.usefontStyle.fnode.node.open = ifont + " " + open;
                 }
                 if(typeof close === 'undefined') {
-                    this.usefontStyle.fnode.node.close = (tempClose == "") ? (ifont + " " + this.nodeIconArray[this.fnodeIcon]["close"]) : tempClose; // 一级图标中的node节点close图标
+                    this.usefontStyle.fnode.node.close = (tempClose === "") ? (ifont + " " + this.nodeIconArray[this.fnodeIcon]["close"]) : tempClose; // 一级图标中的node节点close图标
                 } else {
                     this.usefontStyle.fnode.node.close = ifont + " " + close;
                 }
             }
             if(typeof leaf === 'undefined'){
-                this.usefontStyle.fnode.leaf = (tempLeaf == "") ? (ifont + " " + this.leafIconArray[this.fleafIcon]) : tempLeaf; // 一级图标中的node节点的leaf图标
+                this.usefontStyle.fnode.leaf = (tempLeaf === "") ? (ifont + " " + this.leafIconArray[this.fleafIcon]) : tempLeaf; // 一级图标中的node节点的leaf图标
             } else {
                 this.usefontStyle.fnode.leaf = ifont + " " + leaf;
             }
@@ -981,37 +984,37 @@ layui.define(['jquery','layer','form'], function(exports) {
      * @Param: snode： 当前的图标class实际图标，如 dtree-icon-jia1
      */
     DTree.prototype.useDefaultOrUserDefineSnodeStyle = function(ifont, snode){
-        var _this = this;
-        var tempOpen = this.usefontStyle.snode.node.open;
-        var tempClose = this.usefontStyle.snode.node.close;
-        var tempLeaf = this.usefontStyle.snode.leaf;
+        const _this = this;
+        const tempOpen = this.usefontStyle.snode.node.open;
+        const tempClose = this.usefontStyle.snode.node.close;
+        const tempLeaf = this.usefontStyle.snode.leaf;
 
         if(typeof snode === 'undefined'){
-            this.usefontStyle.snode.node.open = (tempOpen == "") ? (ifont + " " + this.nodeIconArray[this.nodeIcon]["open"]) : tempOpen;  // 二级图标中的node节点open图标
-            this.usefontStyle.snode.node.close = (tempClose == "") ? (ifont + " " + this.nodeIconArray[this.nodeIcon]["close"]) : tempClose; // 二级图标中的node节点close图标
-            this.usefontStyle.snode.leaf = (tempLeaf == "") ? (ifont + " " + this.leafIconArray[this.leafIcon]) : tempLeaf; // 二级图标中的leaf节点图标
+            this.usefontStyle.snode.node.open = (tempOpen === "") ? (ifont + " " + this.nodeIconArray[this.nodeIcon]["open"]) : tempOpen;  // 二级图标中的node节点open图标
+            this.usefontStyle.snode.node.close = (tempClose === "") ? (ifont + " " + this.nodeIconArray[this.nodeIcon]["close"]) : tempClose; // 二级图标中的node节点close图标
+            this.usefontStyle.snode.leaf = (tempLeaf === "") ? (ifont + " " + this.leafIconArray[this.leafIcon]) : tempLeaf; // 二级图标中的leaf节点图标
         } else {
-            var node = snode.node;
-            var leaf = snode.leaf;
+            const node = snode.node;
+            const leaf = snode.leaf;
             if(typeof node === 'undefined') {
-                this.usefontStyle.snode.node.open = (tempOpen == "") ? (ifont + " " + this.nodeIconArray[this.nodeIcon]["open"]) : tempOpen;  // 二级图标中的node节点open图标
-                this.usefontStyle.snode.node.close = (tempClose == "") ? (ifont + " " + this.nodeIconArray[this.nodeIcon]["close"]) : tempClose; // 二级图标中的node节点close图标
+                this.usefontStyle.snode.node.open = (tempOpen === "") ? (ifont + " " + this.nodeIconArray[this.nodeIcon]["open"]) : tempOpen;  // 二级图标中的node节点open图标
+                this.usefontStyle.snode.node.close = (tempClose === "") ? (ifont + " " + this.nodeIconArray[this.nodeIcon]["close"]) : tempClose; // 二级图标中的node节点close图标
             } else {
-                var open = node.open;
-                var close = node.close;
+                const open = node.open;
+                const close = node.close;
                 if(typeof open === 'undefined'){
-                    this.usefontStyle.snode.node.open = (tempOpen == "") ? (ifont + " " + this.nodeIconArray[this.nodeIcon]["open"]) : tempOpen;  // 二级图标中的node节点open图标
+                    this.usefontStyle.snode.node.open = (tempOpen === "") ? (ifont + " " + this.nodeIconArray[this.nodeIcon]["open"]) : tempOpen;  // 二级图标中的node节点open图标
                 } else {
                     this.usefontStyle.snode.node.open = ifont + " " + open;
                 }
                 if(typeof close === 'undefined') {
-                    this.usefontStyle.snode.node.close = (tempClose == "") ? (ifont + " " + this.nodeIconArray[this.nodeIcon]["close"]) : tempClose; // 二级图标中的node节点close图标
+                    this.usefontStyle.snode.node.close = (tempClose === "") ? (ifont + " " + this.nodeIconArray[this.nodeIcon]["close"]) : tempClose; // 二级图标中的node节点close图标
                 } else {
                     this.usefontStyle.snode.node.close = ifont + " " + close;
                 }
             }
             if(typeof leaf === 'undefined') {
-                this.usefontStyle.snode.leaf = (tempLeaf == "") ? (ifont + " " + this.leafIconArray[this.leafIcon]) : tempLeaf; // 二级图标中的leaf节点图标
+                this.usefontStyle.snode.leaf = (tempLeaf === "") ? (ifont + " " + this.leafIconArray[this.leafIcon]) : tempLeaf; // 二级图标中的leaf节点图标
             } else {
                 this.usefontStyle.snode.leaf = ifont + " " + leaf;
             }
@@ -1024,31 +1027,31 @@ layui.define(['jquery','layer','form'], function(exports) {
      * @Param: checkbox： 当前的图标class实际图标，如 dtree-icon-jia1
      */
     DTree.prototype.useDefaultOrUserDefineCheckboxStyle = function(ifont, checkbox){
-        var _this = this;
-        var tempOn = this.usefontStyle.checkbox.on;
-        var tempOut = this.usefontStyle.checkbox.out;
-        var tempNoall = this.usefontStyle.checkbox.noall;
+        const _this = this;
+        const tempOn = this.usefontStyle.checkbox.on;
+        const tempOut = this.usefontStyle.checkbox.out;
+        const tempNoall = this.usefontStyle.checkbox.noall;
 
         if(typeof checkbox === 'undefined'){
-            this.usefontStyle.checkbox.on = (tempOn == "") ? (ifont + " " + LI_DIV_CHECKBAR_ON) : tempOn;
-            this.usefontStyle.checkbox.out = (tempOut == "") ? (ifont + " " + LI_DIV_CHECKBAR_OUT) : tempOut;
-            this.usefontStyle.checkbox.noall = (tempNoall == "") ? (ifont + " " + LI_DIV_CHECKBAR_NOALL) : tempNoall;
+            this.usefontStyle.checkbox.on = (tempOn === "") ? (ifont + " " + LI_DIV_CHECKBAR_ON) : tempOn;
+            this.usefontStyle.checkbox.out = (tempOut === "") ? (ifont + " " + LI_DIV_CHECKBAR_OUT) : tempOut;
+            this.usefontStyle.checkbox.noall = (tempNoall === "") ? (ifont + " " + LI_DIV_CHECKBAR_NOALL) : tempNoall;
         } else {
-            var on = checkbox.on;
-            var out = checkbox.out;
-            var noall = checkbox.noall;
+            const on = checkbox.on;
+            const out = checkbox.out;
+            const noall = checkbox.noall;
             if(typeof on === 'undefined') {
-                this.usefontStyle.checkbox.on = (tempOn == "") ? (ifont + " " + LI_DIV_CHECKBAR_ON) : tempOn;
+                this.usefontStyle.checkbox.on = (tempOn === "") ? (ifont + " " + LI_DIV_CHECKBAR_ON) : tempOn;
             } else {
                 this.usefontStyle.checkbox.on = ifont + " " + on;
             }
             if(typeof out === 'undefined') {
-                this.usefontStyle.checkbox.out = (tempOut == "") ? (ifont + " " + LI_DIV_CHECKBAR_OUT) : tempOut;
+                this.usefontStyle.checkbox.out = (tempOut === "") ? (ifont + " " + LI_DIV_CHECKBAR_OUT) : tempOut;
             } else {
                 this.usefontStyle.checkbox.out = ifont + " " + out;
             }
             if(typeof noall === 'undefined') {
-                this.usefontStyle.checkbox.noall = (tempNoall == "") ? (ifont + " " + LI_DIV_CHECKBAR_NOALL) : tempNoall;
+                this.usefontStyle.checkbox.noall = (tempNoall === "") ? (ifont + " " + LI_DIV_CHECKBAR_NOALL) : tempNoall;
             } else {
                 this.usefontStyle.checkbox.noall = ifont + " " + noall;
             }
@@ -1061,71 +1064,71 @@ layui.define(['jquery','layer','form'], function(exports) {
      * @Param: menubar： 当前的图标class实际图标，如 dtree-icon-jia1
      */
     DTree.prototype.useDefaultOrUserDefineMenubarStyle = function(ifont, menubar){
-        var _this = this;
-        var tempMovedown = this.usefontStyle.menubar.movedown;
-        var tempMoveup = this.usefontStyle.menubar.moveup;
-        var tempRefresh = this.usefontStyle.menubar.refresh;
-        var tempCheckAll = this.usefontStyle.menubar.checkAll;
-        var tempUncheckAll = this.usefontStyle.menubar.unCheckAll;
-        var tempInvertAll = this.usefontStyle.menubar.invertAll;
-        var tempRemove = this.usefontStyle.menubar.remove;
-        var tempSearch = this.usefontStyle.menubar.search;
+        const _this = this;
+        const tempMovedown = this.usefontStyle.menubar.movedown;
+        const tempMoveup = this.usefontStyle.menubar.moveup;
+        const tempRefresh = this.usefontStyle.menubar.refresh;
+        const tempCheckAll = this.usefontStyle.menubar.checkAll;
+        const tempUncheckAll = this.usefontStyle.menubar.unCheckAll;
+        const tempInvertAll = this.usefontStyle.menubar.invertAll;
+        const tempRemove = this.usefontStyle.menubar.remove;
+        const tempSearch = this.usefontStyle.menubar.search;
 
         if(typeof menubar === 'undefined'){
-            this.usefontStyle.menubar.movedown = (tempMovedown == "") ? (ifont + " " + LI_DIV_MENUBAR_DOWN) : tempMovedown;
-            this.usefontStyle.menubar.moveup = (tempMoveup == "") ? (ifont + " " + LI_DIV_MENUBAR_UP) : tempMoveup;
-            this.usefontStyle.menubar.refresh = (tempRefresh == "") ? (ifont + " " + LI_DIV_MENUBAR_REFRESH) : tempRefresh;
-            this.usefontStyle.menubar.checkAll = (tempCheckAll == "") ? (ifont + " " + LI_DIV_MENUBAR_CHECKALL) : tempCheckAll;
-            this.usefontStyle.menubar.unCheckAll = (tempUncheckAll == "") ? (ifont + " " + LI_DIV_MENUBAR_UNCHECKALL) : tempUncheckAll;
-            this.usefontStyle.menubar.invertAll = (tempInvertAll == "") ? (ifont + " " + LI_DIV_MENUBAR_INVERTALL) : tempInvertAll;
-            this.usefontStyle.menubar.remove = (tempRemove == "") ? (ifont + " " + LI_DIV_MENUBAR_DELETE) : tempRemove;
-            this.usefontStyle.menubar.search = (tempSearch == "") ? (ifont + " " + LI_DIV_MENUBAR_SEARCH) : tempSearch;
+            this.usefontStyle.menubar.movedown = (tempMovedown === "") ? (ifont + " " + LI_DIV_MENUBAR_DOWN) : tempMovedown;
+            this.usefontStyle.menubar.moveup = (tempMoveup === "") ? (ifont + " " + LI_DIV_MENUBAR_UP) : tempMoveup;
+            this.usefontStyle.menubar.refresh = (tempRefresh === "") ? (ifont + " " + LI_DIV_MENUBAR_REFRESH) : tempRefresh;
+            this.usefontStyle.menubar.checkAll = (tempCheckAll === "") ? (ifont + " " + LI_DIV_MENUBAR_CHECKALL) : tempCheckAll;
+            this.usefontStyle.menubar.unCheckAll = (tempUncheckAll === "") ? (ifont + " " + LI_DIV_MENUBAR_UNCHECKALL) : tempUncheckAll;
+            this.usefontStyle.menubar.invertAll = (tempInvertAll === "") ? (ifont + " " + LI_DIV_MENUBAR_INVERTALL) : tempInvertAll;
+            this.usefontStyle.menubar.remove = (tempRemove === "") ? (ifont + " " + LI_DIV_MENUBAR_DELETE) : tempRemove;
+            this.usefontStyle.menubar.search = (tempSearch === "") ? (ifont + " " + LI_DIV_MENUBAR_SEARCH) : tempSearch;
         } else {
-            var movedown = menubar.movedown;
-            var moveup = menubar.moveup;
-            var refresh = menubar.refresh;
-            var checkAll = menubar.checkAll;
-            var unCheckAll = menubar.unCheckAll;
-            var invertAll = menubar.invertAll;
-            var remove = menubar.remove;
-            var search = menubar.search;
+            const movedown = menubar.movedown;
+            const moveup = menubar.moveup;
+            const refresh = menubar.refresh;
+            const checkAll = menubar.checkAll;
+            const unCheckAll = menubar.unCheckAll;
+            const invertAll = menubar.invertAll;
+            const remove = menubar.remove;
+            const search = menubar.search;
             if(typeof movedown === 'undefined') {
-                this.usefontStyle.menubar.movedown = (tempMovedown == "") ? (ifont + " " + LI_DIV_MENUBAR_DOWN) : tempMovedown;
+                this.usefontStyle.menubar.movedown = (tempMovedown === "") ? (ifont + " " + LI_DIV_MENUBAR_DOWN) : tempMovedown;
             } else {
                 this.usefontStyle.menubar.movedown = ifont + " " + movedown;
             }
             if(typeof moveup === 'undefined') {
-                this.usefontStyle.menubar.moveup = (tempMoveup == "") ? (ifont + " " + LI_DIV_MENUBAR_UP) : tempMoveup;
+                this.usefontStyle.menubar.moveup = (tempMoveup === "") ? (ifont + " " + LI_DIV_MENUBAR_UP) : tempMoveup;
             } else {
                 this.usefontStyle.menubar.moveup = ifont + " " + moveup;
             }
             if(typeof refresh === 'undefined') {
-                this.usefontStyle.menubar.refresh = (tempRefresh == "") ? (ifont + " " + LI_DIV_MENUBAR_REFRESH) : tempRefresh;
+                this.usefontStyle.menubar.refresh = (tempRefresh === "") ? (ifont + " " + LI_DIV_MENUBAR_REFRESH) : tempRefresh;
             } else {
                 this.usefontStyle.menubar.refresh = ifont + " " + refresh;
             }
             if(typeof checkAll === 'undefined') {
-                this.usefontStyle.menubar.checkAll = (tempCheckAll == "") ? (ifont + " " + LI_DIV_MENUBAR_CHECKALL) : tempCheckAll;
+                this.usefontStyle.menubar.checkAll = (tempCheckAll === "") ? (ifont + " " + LI_DIV_MENUBAR_CHECKALL) : tempCheckAll;
             } else {
                 this.usefontStyle.menubar.checkAll = ifont + " " + checkAll;
             }
             if(typeof unCheckAll === 'undefined') {
-                this.usefontStyle.menubar.unCheckAll = (tempUncheckAll == "") ? (ifont + " " + LI_DIV_MENUBAR_UNCHECKALL) : tempUncheckAll;
+                this.usefontStyle.menubar.unCheckAll = (tempUncheckAll === "") ? (ifont + " " + LI_DIV_MENUBAR_UNCHECKALL) : tempUncheckAll;
             } else {
                 this.usefontStyle.menubar.unCheckAll = ifont + " " + unCheckAll;
             }
             if(typeof invertAll === 'undefined') {
-                this.usefontStyle.menubar.invertAll = (tempInvertAll == "") ? (ifont + " " + LI_DIV_MENUBAR_INVERTALL) : tempInvertAll;
+                this.usefontStyle.menubar.invertAll = (tempInvertAll === "") ? (ifont + " " + LI_DIV_MENUBAR_INVERTALL) : tempInvertAll;
             } else {
                 this.usefontStyle.menubar.invertAll = ifont + " " + invertAll;
             }
             if(typeof remove === 'undefined') {
-                this.usefontStyle.menubar.remove = (tempRemove == "") ? (ifont + " " + LI_DIV_MENUBAR_DELETE) : tempRemove;
+                this.usefontStyle.menubar.remove = (tempRemove === "") ? (ifont + " " + LI_DIV_MENUBAR_DELETE) : tempRemove;
             } else {
                 this.usefontStyle.menubar.remove = ifont + " " + remove;
             }
             if(typeof search === 'undefined') {
-                this.usefontStyle.menubar.search = (tempSearch == "") ? (ifont + " " + LI_DIV_MENUBAR_SEARCH) : tempSearch;
+                this.usefontStyle.menubar.search = (tempSearch === "") ? (ifont + " " + LI_DIV_MENUBAR_SEARCH) : tempSearch;
             } else {
                 this.usefontStyle.menubar.search = ifont + " " + search;
             }
@@ -1138,11 +1141,11 @@ layui.define(['jquery','layer','form'], function(exports) {
      * @Param: menubarExt： 当前的图标class实际图标，如 dtree-icon-jia1
      */
     DTree.prototype.useDefaultOrUserDefineMenubarExtStyle = function(ifont, menubarExt){
-        var _this = this;
-        var tempExt = this.usefontStyle.menubarExt;
+        const _this = this;
+        const tempExt = this.usefontStyle.menubarExt;
 
         if(typeof menubarExt === 'undefined'){
-            this.usefontStyle.menubarExt = (tempExt == "") ? ifont : tempExt;
+            this.usefontStyle.menubarExt = (tempExt === "") ? ifont : tempExt;
         } else {
             this.usefontStyle.menubarExt = menubarExt;
         }
@@ -1154,135 +1157,135 @@ layui.define(['jquery','layer','form'], function(exports) {
      * @Param: toolbar： 当前的图标class实际图标，如 dtree-icon-jia1
      */
     DTree.prototype.useDefaultOrUserDefineToolbarStyle = function(ifont, toolbar){
-        var _this = this;
-        var tempMovedown = this.usefontStyle.toolbar.menubar.movedown;
-        var tempMoveup = this.usefontStyle.toolbar.menubar.moveup;
-        var tempRefresh = this.usefontStyle.toolbar.menubar.refresh;
-        var tempCheckAll = this.usefontStyle.toolbar.menubar.checkAll;
-        var tempUnCheckAll = this.usefontStyle.toolbar.menubar.unCheckAll;
-        var tempInvertAll = this.usefontStyle.toolbar.menubar.invertAll;
-        var tempRemove = this.usefontStyle.toolbar.menubar.remove;
-        var tempSearch = this.usefontStyle.toolbar.menubar.search;
-        var tempExt = this.usefontStyle.toolbar.menubarExt;
-        var tempPulldown = this.usefontStyle.toolbar.pulldown;
-        var tempPullup = this.usefontStyle.toolbar.pullup;
-        var tempAdd = this.usefontStyle.toolbar.add;
-        var tempEdit = this.usefontStyle.toolbar.edit;
-        var tempDel = this.usefontStyle.toolbar.del;
+        const _this = this;
+        const tempMovedown = this.usefontStyle.toolbar.menubar.movedown;
+        const tempMoveup = this.usefontStyle.toolbar.menubar.moveup;
+        const tempRefresh = this.usefontStyle.toolbar.menubar.refresh;
+        const tempCheckAll = this.usefontStyle.toolbar.menubar.checkAll;
+        const tempUnCheckAll = this.usefontStyle.toolbar.menubar.unCheckAll;
+        const tempInvertAll = this.usefontStyle.toolbar.menubar.invertAll;
+        const tempRemove = this.usefontStyle.toolbar.menubar.remove;
+        const tempSearch = this.usefontStyle.toolbar.menubar.search;
+        const tempExt = this.usefontStyle.toolbar.menubarExt;
+        const tempPulldown = this.usefontStyle.toolbar.pulldown;
+        const tempPullup = this.usefontStyle.toolbar.pullup;
+        const tempAdd = this.usefontStyle.toolbar.add;
+        const tempEdit = this.usefontStyle.toolbar.edit;
+        const tempDel = this.usefontStyle.toolbar.del;
 
 
         if(typeof toolbar === 'undefined'){
-            this.usefontStyle.toolbar.menubar.movedown = (tempMovedown == "") ? (ifont + " " + this.usefontStyle.menubar.movedown) : tempMovedown;
-            this.usefontStyle.toolbar.menubar.moveup = (tempMoveup == "") ? (ifont + " " + this.usefontStyle.menubar.moveup) : tempMoveup;
-            this.usefontStyle.toolbar.menubar.refresh = (tempRefresh == "") ? (ifont + " " + this.usefontStyle.menubar.refresh) : tempRefresh;
-            this.usefontStyle.toolbar.menubar.checkAll = (tempCheckAll == "") ? (ifont + " " + this.usefontStyle.menubar.checkAll) : tempCheckAll;
-            this.usefontStyle.toolbar.menubar.unCheckAll = (tempUnCheckAll == "") ? (ifont + " " + this.usefontStyle.menubar.unCheckAll) : tempUnCheckAll;
-            this.usefontStyle.toolbar.menubar.invertAll = (tempInvertAll == "") ? (ifont + " " + this.usefontStyle.menubar.invertAll) : tempInvertAll;
-            this.usefontStyle.toolbar.menubar.remove = (tempRemove == "") ? (ifont + " " + this.usefontStyle.menubar.remove) : tempRemove;
-            this.usefontStyle.toolbar.menubar.search = (tempSearch == "") ? (ifont + " " + this.usefontStyle.menubar.search) : tempSearch;
-            this.usefontStyle.toolbar.menubarExt = (tempExt == "") ? this.usefontStyle.menubarExt : tempExt;
-            this.usefontStyle.toolbar.pulldown = (tempPulldown == "") ? (ifont + " " + LI_DIV_TOOLBAR_PULLDOWN) : tempPulldown;
-            this.usefontStyle.toolbar.pullup = (tempPullup == "") ? (ifont + " " + LI_DIV_TOOLBAR_PULLUP) : tempPullup;
-            this.usefontStyle.toolbar.add = (tempAdd == "") ? (ifont + " " + LI_DIV_TOOLBAR_ADD) : tempAdd;
-            this.usefontStyle.toolbar.edit = (tempEdit == "") ? (ifont + " " + LI_DIV_TOOLBAR_EDIT) : tempEdit;
-            this.usefontStyle.toolbar.del = (tempDel == "") ? (ifont + " " + LI_DIV_TOOLBAR_DEL) : tempDel;
+            this.usefontStyle.toolbar.menubar.movedown = (tempMovedown === "") ? (ifont + " " + this.usefontStyle.menubar.movedown) : tempMovedown;
+            this.usefontStyle.toolbar.menubar.moveup = (tempMoveup === "") ? (ifont + " " + this.usefontStyle.menubar.moveup) : tempMoveup;
+            this.usefontStyle.toolbar.menubar.refresh = (tempRefresh === "") ? (ifont + " " + this.usefontStyle.menubar.refresh) : tempRefresh;
+            this.usefontStyle.toolbar.menubar.checkAll = (tempCheckAll === "") ? (ifont + " " + this.usefontStyle.menubar.checkAll) : tempCheckAll;
+            this.usefontStyle.toolbar.menubar.unCheckAll = (tempUnCheckAll === "") ? (ifont + " " + this.usefontStyle.menubar.unCheckAll) : tempUnCheckAll;
+            this.usefontStyle.toolbar.menubar.invertAll = (tempInvertAll === "") ? (ifont + " " + this.usefontStyle.menubar.invertAll) : tempInvertAll;
+            this.usefontStyle.toolbar.menubar.remove = (tempRemove === "") ? (ifont + " " + this.usefontStyle.menubar.remove) : tempRemove;
+            this.usefontStyle.toolbar.menubar.search = (tempSearch === "") ? (ifont + " " + this.usefontStyle.menubar.search) : tempSearch;
+            this.usefontStyle.toolbar.menubarExt = (tempExt === "") ? this.usefontStyle.menubarExt : tempExt;
+            this.usefontStyle.toolbar.pulldown = (tempPulldown === "") ? (ifont + " " + LI_DIV_TOOLBAR_PULLDOWN) : tempPulldown;
+            this.usefontStyle.toolbar.pullup = (tempPullup === "") ? (ifont + " " + LI_DIV_TOOLBAR_PULLUP) : tempPullup;
+            this.usefontStyle.toolbar.add = (tempAdd === "") ? (ifont + " " + LI_DIV_TOOLBAR_ADD) : tempAdd;
+            this.usefontStyle.toolbar.edit = (tempEdit === "") ? (ifont + " " + LI_DIV_TOOLBAR_EDIT) : tempEdit;
+            this.usefontStyle.toolbar.del = (tempDel === "") ? (ifont + " " + LI_DIV_TOOLBAR_DEL) : tempDel;
         } else {
-            var menubar = toolbar.menubar;
-            var menubarExt = toolbar.menubarExt;
-            var pulldown = toolbar.pulldown;
-            var pullup = toolbar.pullup;
-            var add = toolbar.add;
-            var edit = toolbar.edit;
-            var del = toolbar.del;
+            const menubar = toolbar.menubar;
+            const menubarExt = toolbar.menubarExt;
+            const pulldown = toolbar.pulldown;
+            const pullup = toolbar.pullup;
+            const add = toolbar.add;
+            const edit = toolbar.edit;
+            const del = toolbar.del;
 
             if(typeof menubar === 'undefined'){
-                this.usefontStyle.toolbar.menubar.movedown = (tempMovedown == "") ? (ifont + " " + this.usefontStyle.menubar.movedown) : tempMovedown;
-                this.usefontStyle.toolbar.menubar.moveup = (tempMoveup == "") ? (ifont + " " + this.usefontStyle.menubar.moveup) : tempMoveup;
-                this.usefontStyle.toolbar.menubar.refresh = (tempRefresh == "") ? (ifont + " " + this.usefontStyle.menubar.refresh) : tempRefresh;
-                this.usefontStyle.toolbar.menubar.checkAll = (tempCheckAll == "") ? (ifont + " " + this.usefontStyle.menubar.checkAll) : tempCheckAll;
-                this.usefontStyle.toolbar.menubar.unCheckAll = (tempUncheckAll == "") ? (ifont + " " + this.usefontStyle.menubar.unCheckAll) : tempUncheckAll;
-                this.usefontStyle.toolbar.menubar.invertAll = (tempInvertAll == "") ? (ifont + " " + this.usefontStyle.menubar.invertAll) : tempInvertAll;
-                this.usefontStyle.toolbar.menubar.remove = (tempRemove == "") ? (ifont + " " + this.usefontStyle.menubar.remove) : tempRemove;
-                this.usefontStyle.toolbar.menubar.search = (tempSearch == "") ? (ifont + " " + this.usefontStyle.menubar.search) : tempSearch;
+                this.usefontStyle.toolbar.menubar.movedown = (tempMovedown === "") ? (ifont + " " + this.usefontStyle.menubar.movedown) : tempMovedown;
+                this.usefontStyle.toolbar.menubar.moveup = (tempMoveup === "") ? (ifont + " " + this.usefontStyle.menubar.moveup) : tempMoveup;
+                this.usefontStyle.toolbar.menubar.refresh = (tempRefresh === "") ? (ifont + " " + this.usefontStyle.menubar.refresh) : tempRefresh;
+                this.usefontStyle.toolbar.menubar.checkAll = (tempCheckAll === "") ? (ifont + " " + this.usefontStyle.menubar.checkAll) : tempCheckAll;
+                this.usefontStyle.toolbar.menubar.unCheckAll = (tempUncheckAll === "") ? (ifont + " " + this.usefontStyle.menubar.unCheckAll) : tempUncheckAll;
+                this.usefontStyle.toolbar.menubar.invertAll = (tempInvertAll === "") ? (ifont + " " + this.usefontStyle.menubar.invertAll) : tempInvertAll;
+                this.usefontStyle.toolbar.menubar.remove = (tempRemove === "") ? (ifont + " " + this.usefontStyle.menubar.remove) : tempRemove;
+                this.usefontStyle.toolbar.menubar.search = (tempSearch === "") ? (ifont + " " + this.usefontStyle.menubar.search) : tempSearch;
             } else {
-                var movedown = menubar.movedown;
-                var moveup = menubar.moveup;
-                var refresh = menubar.refresh;
-                var checkAll = menubar.checkAll;
-                var unCheckAll = menubar.unCheckAll;
-                var invertAll = menubar.invertAll;
-                var remove = menubar.remove;
-                var search = menubar.search;
+                const movedown = menubar.movedown;
+                const moveup = menubar.moveup;
+                const refresh = menubar.refresh;
+                const checkAll = menubar.checkAll;
+                const unCheckAll = menubar.unCheckAll;
+                const invertAll = menubar.invertAll;
+                const remove = menubar.remove;
+                const search = menubar.search;
                 if(typeof movedown === 'undefined') {
-                    this.usefontStyle.toolbar.menubar.movedown = (tempMovedown == "") ? (ifont + " " + this.usefontStyle.menubar.movedown) : tempMovedown;
+                    this.usefontStyle.toolbar.menubar.movedown = (tempMovedown === "") ? (ifont + " " + this.usefontStyle.menubar.movedown) : tempMovedown;
                 } else {
                     this.usefontStyle.toolbar.menubar.movedown = ifont + " " + movedown;
                 }
                 if(typeof moveup === 'undefined') {
-                    this.usefontStyle.toolbar.menubar.moveup = (tempMoveup == "") ? (ifont + " " + this.usefontStyle.menubar.moveup) : tempMoveup;
+                    this.usefontStyle.toolbar.menubar.moveup = (tempMoveup === "") ? (ifont + " " + this.usefontStyle.menubar.moveup) : tempMoveup;
                 } else {
                     this.usefontStyle.toolbar.menubar.moveup = ifont + " " + moveup;
                 }
                 if(typeof refresh === 'undefined') {
-                    this.usefontStyle.toolbar.menubar.refresh = (tempRefresh == "") ? (ifont + " " + this.usefontStyle.menubar.refresh) : tempRefresh;
+                    this.usefontStyle.toolbar.menubar.refresh = (tempRefresh === "") ? (ifont + " " + this.usefontStyle.menubar.refresh) : tempRefresh;
                 } else {
                     this.usefontStyle.toolbar.menubar.refresh = ifont + " " + refresh;
                 }
                 if(typeof checkAll === 'undefined') {
-                    this.usefontStyle.toolbar.menubar.checkAll = (tempCheckAll == "") ? (ifont + " " + this.usefontStyle.menubar.checkAll) : tempCheckAll;
+                    this.usefontStyle.toolbar.menubar.checkAll = (tempCheckAll === "") ? (ifont + " " + this.usefontStyle.menubar.checkAll) : tempCheckAll;
                 } else {
                     this.usefontStyle.toolbar.menubar.checkAll = ifont + " " + checkAll;
                 }
                 if(typeof unCheckAll === 'undefined') {
-                    this.usefontStyle.toolbar.menubar.unCheckAll = (tempUncheckAll == "") ? (ifont + " " + this.usefontStyle.menubar.unCheckAll) : tempUncheckAll;
+                    this.usefontStyle.toolbar.menubar.unCheckAll = (tempUncheckAll === "") ? (ifont + " " + this.usefontStyle.menubar.unCheckAll) : tempUncheckAll;
                 } else {
                     this.usefontStyle.toolbar.menubar.unCheckAll = ifont + " " + unCheckAll;
                 }
                 if(typeof invertAll === 'undefined') {
-                    this.usefontStyle.toolbar.menubar.invertAll = (tempInvertAll == "") ? (ifont + " " + this.usefontStyle.menubar.invertAll) : tempInvertAll;
+                    this.usefontStyle.toolbar.menubar.invertAll = (tempInvertAll === "") ? (ifont + " " + this.usefontStyle.menubar.invertAll) : tempInvertAll;
                 } else {
                     this.usefontStyle.toolbar.menubar.invertAll = ifont + " " + invertAll;
                 }
                 if(typeof remove === 'undefined') {
-                    this.usefontStyle.toolbar.menubar.remove = (tempRemove == "") ? (ifont + " " + this.usefontStyle.menubar.remove) : tempRemove;
+                    this.usefontStyle.toolbar.menubar.remove = (tempRemove === "") ? (ifont + " " + this.usefontStyle.menubar.remove) : tempRemove;
                 } else {
                     this.usefontStyle.toolbar.menubar.remove = ifont + " " + remove;
                 }
                 if(typeof search === 'undefined') {
-                    this.usefontStyle.toolbar.menubar.search = (tempSearch == "") ? (ifont + " " + this.usefontStyle.menubar.search) : tempSearch;
+                    this.usefontStyle.toolbar.menubar.search = (tempSearch === "") ? (ifont + " " + this.usefontStyle.menubar.search) : tempSearch;
                 } else {
                     this.usefontStyle.toolbar.menubar.search = ifont + " " + search;
                 }
             }
 
             if(typeof menubarExt === 'undefined'){
-                this.usefontStyle.toolbar.menubarExt = (tempExt == "") ? this.usefontStyle.menubarExt : tempExt;
+                this.usefontStyle.toolbar.menubarExt = (tempExt === "") ? this.usefontStyle.menubarExt : tempExt;
             } else {
                 this.usefontStyle.toolbar.menubarExt = menubarExt;
             }
 
             if(typeof pulldown === 'undefined'){
-                this.usefontStyle.toolbar.pulldown = (tempPulldown == "") ? (ifont + " " + LI_DIV_TOOLBAR_PULLDOWN) : tempPulldown;
+                this.usefontStyle.toolbar.pulldown = (tempPulldown === "") ? (ifont + " " + LI_DIV_TOOLBAR_PULLDOWN) : tempPulldown;
             } else {
                 this.usefontStyle.toolbar.pulldown = ifont + " " + pulldown;
             }
             if(typeof pullup === 'undefined'){
-                this.usefontStyle.toolbar.pullup = (tempPullup == "") ? (ifont + " " + LI_DIV_TOOLBAR_PULLUP) : tempPullup;
+                this.usefontStyle.toolbar.pullup = (tempPullup === "") ? (ifont + " " + LI_DIV_TOOLBAR_PULLUP) : tempPullup;
             } else {
                 this.usefontStyle.toolbar.pullup = ifont + " " + pullup;
             }
             if(typeof add === 'undefined'){
-                this.usefontStyle.toolbar.add = (tempAdd == "") ? (ifont + " " + LI_DIV_TOOLBAR_ADD) : tempAdd;
+                this.usefontStyle.toolbar.add = (tempAdd === "") ? (ifont + " " + LI_DIV_TOOLBAR_ADD) : tempAdd;
             } else {
                 this.usefontStyle.toolbar.add = ifont + " " + add;
             }
             if(typeof edit === 'undefined'){
-                this.usefontStyle.toolbar.edit = (tempEdit == "") ? (ifont + " " + LI_DIV_TOOLBAR_EDIT) : tempEdit;
+                this.usefontStyle.toolbar.edit = (tempEdit === "") ? (ifont + " " + LI_DIV_TOOLBAR_EDIT) : tempEdit;
             } else {
                 this.usefontStyle.toolbar.edit = ifont + " " + edit;
             }
             if(typeof del === 'undefined'){
-                this.usefontStyle.toolbar.del = (tempDel == "") ? (ifont + " " + LI_DIV_TOOLBAR_DEL) : tempDel;
+                this.usefontStyle.toolbar.del = (tempDel === "") ? (ifont + " " + LI_DIV_TOOLBAR_DEL) : tempDel;
             } else {
                 this.usefontStyle.toolbar.del = ifont + " " + del;
             }
@@ -1295,11 +1298,11 @@ layui.define(['jquery','layer','form'], function(exports) {
      * @Param: toolbarExt： 当前的图标class实际图标，如 dtree-icon-jia1
      */
     DTree.prototype.useDefaultOrUserDefineToolbarExtStyle = function(ifont, toolbarExt){
-        var _this = this;
-        var tempExt = this.usefontStyle.toolbarExt;
+        const _this = this;
+        const tempExt = this.usefontStyle.toolbarExt;
 
         if(typeof toolbarExt === 'undefined'){
-            this.usefontStyle.toolbarExt = (tempExt == "") ? ifont : tempExt;
+            this.usefontStyle.toolbarExt = (tempExt === "") ? ifont : tempExt;
         } else {
             this.usefontStyle.toolbarExt = toolbarExt;
         }
@@ -1311,9 +1314,9 @@ layui.define(['jquery','layer','form'], function(exports) {
      * @Param: $i_snode： JQuery对象，表示二级图标节点
      */
     DTree.prototype.operateIcon = function($i_fnode, $i_snode){
-        var _this = this;
-        var ficonClass = $i_fnode.attr("data-iconClass");
-        var iconClass = $i_snode.attr("data-iconClass");
+        const _this = this;
+        const ficonClass = $i_fnode.attr("data-iconClass");
+        const iconClass = $i_snode.attr("data-iconClass");
         return{
             open: function(){
                 $i_fnode.attr("data-spread","open");
@@ -1375,7 +1378,7 @@ layui.define(['jquery','layer','form'], function(exports) {
      * @Param: $lis： JQuery对象，表示组成树的li节点集
      */
     DTree.prototype.showLine = function($lis){
-        var _this = this;
+        const _this = this;
         if(_this.line){
             if($lis && $lis.length > 0) {
                 $lis.each(function(){
@@ -1394,20 +1397,20 @@ layui.define(['jquery','layer','form'], function(exports) {
      * @Param: $li： JQuery对象，表示组成树的li节点
      */
     DTree.prototype.showLineLi = function($li){
-        var _this = this;
-        var $div = $li.children("div"),
+        const _this = this;
+        const $div = $li.children("div"),
             $nextLi = $li.next("li"),
             $ul = $li.parent("ul");
-        if($ul[0].id == _this.obj[0].id) {
+        if($ul[0].id === _this.obj[0].id) {
             // 根节点下的节点
             $li.removeClass(LI_NAV_LINE);
             $li.removeClass(LI_NAV_LAST_LINE);
             $li.addClass(LI_NAV_FIRST_LINE);
         } else {
             // 非根节点下的节点
-            var $pnextLi = $ul.parent("li").next("li");
-            if($pnextLi.length == 0) {
-                if($nextLi.length == 0){
+            const $pnextLi = $ul.parent("li").next("li");
+            if($pnextLi.length === 0) {
+                if($nextLi.length === 0){
                     $li.removeClass(LI_NAV_LINE);
                     $li.removeClass(LI_NAV_FIRST_LINE);
                     $li.addClass(LI_NAV_LAST_LINE);
@@ -1417,8 +1420,8 @@ layui.define(['jquery','layer','form'], function(exports) {
                     $li.addClass(LI_NAV_LINE);
                 }
             }else {
-                var $pnextdiv = $pnextLi.children("div");
-                if($nextLi.length == 0 && $div.children("cite").attr("data-leaf") == "leaf" && $pnextdiv.children("cite").attr("data-leaf") == "leaf") {
+                const $pnextdiv = $pnextLi.children("div");
+                if($nextLi.length === 0 && $div.children("cite").attr("data-leaf") === "leaf" && $pnextdiv.children("cite").attr("data-leaf") === "leaf") {
                     $li.removeClass(LI_NAV_FIRST_LINE);
                     $li.removeClass(LI_NAV_LINE);
                     $li.addClass(LI_NAV_LAST_LINE);
@@ -1436,13 +1439,13 @@ layui.define(['jquery','layer','form'], function(exports) {
      * @Desc: 设置高度
      */
     DTree.prototype.autoHeight = function(){
-        var _this = this;
-        var height = _this.height;
-        if(height != "") {
-            if(_this.elem == _this.scroll){
+        const _this = this;
+        const height = _this.height;
+        if(height !== "") {
+            if(_this.elem === _this.scroll){
                 _this.obj.parent().css("height", height + "px");
             } else {
-                var $toolbarDiv = _this.obj.closest(_this.scroll);
+                const $toolbarDiv = _this.obj.closest(_this.scroll);
                 $toolbarDiv.css("height", height + "px");
             }
         }
@@ -1453,7 +1456,7 @@ layui.define(['jquery','layer','form'], function(exports) {
      * @Param: options： dtree的所有属性的json对象
      */
     DTree.prototype.reload = function(options){
-        var _this = this;
+        const _this = this;
         _this.reloadSetting(options);
         _this.init();
     };
@@ -1462,9 +1465,9 @@ layui.define(['jquery','layer','form'], function(exports) {
      * @Desc:  初始化加载
      */
     DTree.prototype.loadTreeInit = function(){
-    	var _this = this;
-    	var asyncLoad = _this.asyncLoad;
-    	// 初始化加载
+        const _this = this;
+        const asyncLoad = _this.asyncLoad;
+        // 初始化加载
     	_this.init(function(){
     		// ajax加载之后的回调
     		if(asyncLoad && asyncLoad.length > 0) {
@@ -1482,20 +1485,20 @@ layui.define(['jquery','layer','form'], function(exports) {
      * @Param: i： 已经加载到的层级
      */
     DTree.prototype.loadChildTreeInit = function(asyncLoad, i){
-    	var _this = this;
-    	if(i == asyncLoad.length) { // 满足条件，终止递归
+        const _this = this;
+        if(i === asyncLoad.length) { // 满足条件，终止递归
     		return ;
     	}
 
-    	var $div = _this.getNode(asyncLoad[i]);
-    	
-    	if($div && $div.length > 0) {
+        const $div = _this.getNode(asyncLoad[i]);
+
+        if($div && $div.length > 0) {
     		// 设置节点状态
-    		var $ul = $div.next("ul"),
-	    		$i_fnode = _this.getNodeDom($div).fnode(),
-	            $i_snode = _this.getNodeDom($div).snode();
-    		
-    		$ul.addClass(NAV_SHOW);
+            const $ul = $div.next("ul"),
+                $i_fnode = _this.getNodeDom($div).fnode(),
+                $i_snode = _this.getNodeDom($div).snode();
+
+            $ul.addClass(NAV_SHOW);
     		_this.accordionUL($ul);
     		_this.operateIcon($i_fnode, $i_snode).open();
     		// 加载子节点
@@ -1512,7 +1515,7 @@ layui.define(['jquery','layer','form'], function(exports) {
      * @Param: callback： 异步加载完成之后的回调函数
      */
     DTree.prototype.init = function(callback){
-        var _this = this;
+        const _this = this;
         if (typeof _this !== "object") {
             layer.msg("树组件未成功加载，请检查配置", {icon:5});
             return ;
@@ -1535,7 +1538,7 @@ layui.define(['jquery','layer','form'], function(exports) {
      * @Param: callback： 子节点加载完成之后的回调喊出
      */
     DTree.prototype.getChild = function($div, data, callback) {
-        var _this = this, $ul = $div.next("ul");
+        const _this = this, $ul = $div.next("ul");
 
         _this.setNodeParam($div);
 
@@ -1553,37 +1556,37 @@ layui.define(['jquery','layer','form'], function(exports) {
      * @Param: data： data加载的数据
      */
     DTree.prototype.dataLoadTree = function(first, $ul, data){
-    	var _this = this;
-    	
-    	if(typeof data.length === 'undefined'){
+        const _this = this;
+
+        if(typeof data.length === 'undefined'){
             layer.msg("数据解析异常，data数据格式不正确", {icon:5});
             return ;
         }
 
-        if(first && data.length == 0) {
+        if(first && data.length === 0) {
         	$ul.html(_this.getNoneDom().text());
             return ;
         }
 
         //先将ul中的元素清空
         $ul.html("");
-        
-        var index = _this.load ? layer.load(1) : "";
+
+        const index = _this.load ? layer.load(1) : "";
 
         setTimeout(function () {
             // 加载完毕后执行树解析前的回调
-            var returnData = _this.success(data, $ul, first);
+            const returnData = _this.success(data, $ul, first);
             if(returnData) {
                 data = returnData;
             }
 
-            var pid = (first == true) ? $ul.attr("data-id") : _this.node.nodeId;
-            var level = (first == true) ? 1 : parseInt(_this.node.level)+1;
-            
+            const pid = (first === true) ? $ul.attr("data-id") : _this.node.nodeId;
+            const level = (first === true) ? 1 : parseInt(_this.node.level) + 1;
+
             // 解析树
-            if (_this.dataFormat == 'list'){
+            if (_this.dataFormat === 'list'){
                 //1.构建一个存放节点的树组
-                var rootListData = _this.queryListTreeByPid(pid, data);
+                const rootListData = _this.queryListTreeByPid(pid, data);
                 _this.loadListTree(rootListData, _this.data, level);
             } else {
                 _this.loadTree(data, level);
@@ -1593,7 +1596,7 @@ layui.define(['jquery','layer','form'], function(exports) {
             _this.showLine();
 
             // 这种情况下需要一开始就将toolbar显示在页面上
-            if(_this.toolbar && _this.toolbarWay != 'contextmenu') {
+            if(_this.toolbar && _this.toolbarWay !== 'contextmenu') {
                 _this.setToolbarDom().setToolbarPlace(_this.toolbarMenu);
             }
 
@@ -1628,9 +1631,9 @@ layui.define(['jquery','layer','form'], function(exports) {
      * @Param: callback： 异步加载完成之后的回调函数
      */
     DTree.prototype.asyncLoadTree = function(first, $ul, callback){
-    	var _this = this;
-    	
-    	if (!_this.url) {
+        const _this = this;
+
+        if (!_this.url) {
             layer.msg("数据请求异常，url参数未指定", {icon:5});
             return ;
         }
@@ -1638,7 +1641,7 @@ layui.define(['jquery','layer','form'], function(exports) {
         //先将ul中的元素清空
         $ul.html("");
 
-        var index = "";
+        let index = "";
 
         AjaxHelper.request({
             async: _this.async,
@@ -1651,8 +1654,8 @@ layui.define(['jquery','layer','form'], function(exports) {
             data: _this.getFilterRequestParam(_this.getRequestParam()),
             beforeSend: function(XMLHttpRequest, self){
             	index = _this.load ? layer.load(1) : "";
-            	var returnFlag = _this.beforeSend(this, XMLHttpRequest, self);
-            	if(!returnFlag) {
+                const returnFlag = _this.beforeSend(this, XMLHttpRequest, self);
+                if(!returnFlag) {
             		if(_this.load){layer.close(index);}
             	}
             	return returnFlag;
@@ -1663,21 +1666,21 @@ layui.define(['jquery','layer','form'], function(exports) {
                 }
 
                 // 加载完毕后执行树解析前的回调
-                var returnData = _this.success(result, $ul, first);
+                const returnData = _this.success(result, $ul, first);
                 if(returnData) {
                     result = returnData;
                 }
 
-                var code = "";
-                if (_this.dataStyle == 'layuiStyle'){
+                let code = "";
+                if (_this.dataStyle === 'layuiStyle'){
                     code = result[_this.response.statusName];
                 } else {
                     code = result.status[_this.response.statusName];
                 }
 
-                if (code == _this.response.statusCode) {
-                	
-                    var d = result[_this.response.rootName];
+                if (code === _this.response.statusCode) {
+
+                    const d = result[_this.response.rootName];
 
                     if(first && typeof d.length === 'undefined'){
                         $ul.html(_this.getNoneDom().errText("数据解析异常，url回调后的数据格式不正确"));
@@ -1685,19 +1688,19 @@ layui.define(['jquery','layer','form'], function(exports) {
                         return ;
                     }
 
-                    if(first && d.length == 0) {
+                    if(first && d.length === 0) {
                         $ul.html(_this.getNoneDom().text());
                         return ;
                     }
 
                     //1.识别根节点ul中的data-id标签，判断顶级父节点
-                    var pid = (first == true) ? $ul.attr("data-id") : _this.node.nodeId;
-                    var level = (first == true) ? 1 : parseInt(_this.node.level)+1;
-                    
+                    const pid = (first === true) ? $ul.attr("data-id") : _this.node.nodeId;
+                    const level = (first === true) ? 1 : parseInt(_this.node.level) + 1;
+
                     // 第一次解析树
-                    if (_this.dataFormat == 'list'){
+                    if (_this.dataFormat === 'list'){
                         //1.构建一个存放节点的树组
-                        var rootListData = _this.queryListTreeByPid(pid, d);
+                        const rootListData = _this.queryListTreeByPid(pid, d);
                         if(first) {
                         	_this.loadListTree(rootListData, d, level);
                         } else {
@@ -1715,7 +1718,7 @@ layui.define(['jquery','layer','form'], function(exports) {
                     _this.showLine();
 
                     // 这种情况下需要一开始就将toolbar显示在页面上
-                    if(_this.toolbar && _this.toolbarWay != 'contextmenu') {
+                    if(_this.toolbar && _this.toolbarWay !== 'contextmenu') {
                         _this.setToolbarDom().setToolbarPlace(_this.toolbarMenu);
                     }
 
@@ -1746,7 +1749,7 @@ layui.define(['jquery','layer','form'], function(exports) {
                     callback && callback();
                 } else {
                     // 如果打印不出任何信息说明是在这里，用了错误的数据格式， 或返回码不正确
-                    if (_this.dataStyle == 'layuiStyle'){
+                    if (_this.dataStyle === 'layuiStyle'){
                         _this.obj.html(_this.getNoneDom().errText(result[_this.response.message]));
                         _this.error(null, code, result[_this.response.message]);
                     } else {
@@ -1775,15 +1778,15 @@ layui.define(['jquery','layer','form'], function(exports) {
      * @Param: $ul： JQuery对象，代表当前数据加载到的ul标签里
      */
     DTree.prototype.loadListTree = function(nowListData, listData, level, $ul){
-        var _this = this;
+        const _this = this;
         $ul = $ul || _this.getNodeDom().nowOrRootUl();	//当前选中的节点或根节点
         if (nowListData.length > 0){
-            for (var i = 0; i < nowListData.length; i++) {
+            for (let i = 0; i < nowListData.length; i++) {
                 // 1.获取已知节点的全部数据
-                var data = nowListData[i];
+                const data = nowListData[i];
                 if(typeof data !== "object") continue;
-                var parseData = _this.parseData(data);
-                var childListData = _this.queryListTreeByPid(parseData.treeId(), listData); // 根据已知数据的id判断该条数据是否还有子数据
+                const parseData = _this.parseData(data);
+                const childListData = _this.queryListTreeByPid(parseData.treeId(), listData); // 根据已知数据的id判断该条数据是否还有子数据
 
                 // 3. 页面元素加载数据
                 $ul.append(_this.getLiItemDom(parseData.treeId(), parseData.parentId(), parseData.title(), parseData.fmtTitle(), parseData.last(childListData.length), parseData.ficonClass(), parseData.iconClass(), parseData.checkArr(), level, parseData.spread(level), parseData.disabled(), parseData.hide(), parseData.basicData(), parseData.recordData(), ($ul.hasClass(UL_ROOT) ? "root" : "item")));
@@ -1802,17 +1805,17 @@ layui.define(['jquery','layer','form'], function(exports) {
      * @Param: listData： 表示全部数据
      */
     DTree.prototype.queryListTreeByPid = function(pid, listData){
-        var _this = this;
-        var rootListData = [];
+        const _this = this;
+        const rootListData = [];
         if (listData) {
-            for (var i = 0; i < listData.length; i++) {
-                var data = listData[i];
+            for (let i = 0; i < listData.length; i++) {
+                const data = listData[i];
                 if(typeof data !== "object") continue;
-                if(pid == "null" || pid == null){
+                if(pid === "null" || pid == null){
                     if(data[_this.response.parentId] == null) { rootListData.push(data); }
                 } else {
-                    if (data[_this.response.parentId] == pid){
-                        if (data[_this.response.treeId] == pid){
+                    if (data[_this.response.parentId] === pid){
+                        if (data[_this.response.treeId] === pid){
                             _this.errData.push(data);
                         } else {
                             rootListData.push(data);
@@ -1831,18 +1834,18 @@ layui.define(['jquery','layer','form'], function(exports) {
      * @Param: $ul： JQuery对象，代表当前数据加载到的ul标签里
      */
     DTree.prototype.loadTree = function(listData, level, $ul){
-        var _this = this;
+        const _this = this;
         if (listData) {
             $ul = $ul || _this.getNodeDom().nowOrRootUl();	//当前选中的节点或根节点
-            for (var i = 0; i < listData.length; i++) {	// 遍历跟节点或追加的跟节点
-                var data = listData[i];
+            for (let i = 0; i < listData.length; i++) {	// 遍历跟节点或追加的跟节点
+                const data = listData[i];
                 if(typeof data !== "object") continue;
-                if(data[_this.response.treeId] == data[_this.response.parentId]) { _this.errData.push(data); }
-                var parseData = _this.parseData(data);
-                var children = parseData.children();
+                if(data[_this.response.treeId] === data[_this.response.parentId]) { _this.errData.push(data); }
+                const parseData = _this.parseData(data);
+                const children = parseData.children();
                 $ul.append(_this.getLiItemDom(parseData.treeId(), parseData.parentId(), parseData.title(), parseData.fmtTitle(), parseData.last(children.length), parseData.ficonClass(), parseData.iconClass(), parseData.checkArr(), level, parseData.spread(level), parseData.disabled(), parseData.hide(), parseData.basicData(), parseData.recordData(), ($ul.hasClass(UL_ROOT) ? "root" : "item")));
-                if (children.length != 0) {
-                    var cLevel = parseInt(level)+1;
+                if (children.length !== 0) {
+                    const cLevel = parseInt(level) + 1;
                     _this.loadTree(children, cLevel, _this.obj.find("ul[data-id='"+parseData.treeId()+"']"));
                 }
             }
@@ -1854,11 +1857,11 @@ layui.define(['jquery','layer','form'], function(exports) {
      * @Param: 
      */
     DTree.prototype.msgErrData = function() {
-        var _this = this;
+        const _this = this;
         if(_this.errData.length > 0 && _this.errDataShow) {
-            var title = "";
-            for(var i=0; i<_this.errData.length; i++) {
-                var edata = _this.errData[i];
+            let title = "";
+            for(let i=0; i<_this.errData.length; i++) {
+                const edata = _this.errData[i];
                 title += "数据：【"+edata[_this.response.title]+"】中节点id和上级id值一致！ \n";
             }
             layer.msg(title, {icon:2,time:5000});
@@ -1872,7 +1875,7 @@ layui.define(['jquery','layer','form'], function(exports) {
      * @Param: data： 被解析的单个数据对象
      */
     DTree.prototype.parseData = function(data) {
-        var _this = this;
+        const _this = this;
 
         return {
             treeId: function(){
@@ -1883,9 +1886,9 @@ layui.define(['jquery','layer','form'], function(exports) {
             },
             fmtTitle: function(){
                 if(typeof _this.formatter.title === 'function'){
-                    var ftitle = _this.formatter.title(data);
-                    var tt = data[_this.response.title];
-                    tt = (ftitle == "" || ftitle == undefined || ftitle == null) ? tt : ftitle;
+                    const ftitle = _this.formatter.title(data);
+                    let tt = data[_this.response.title];
+                    tt = (ftitle === "" || ftitle === undefined || ftitle === null) ? tt : ftitle;
                     return tt || "";
                 }
                 return data[_this.response.title];
@@ -1903,7 +1906,7 @@ layui.define(['jquery','layer','form'], function(exports) {
                 return data[_this.response.iconClass] || "";
             },
             last: function(len){
-                return ((len == 0) ?
+                return ((len === 0) ?
                     ((typeof (data[_this.response.last]) === "boolean") ? data[_this.response.last] : true) :
                     ((typeof (data[_this.response.last]) === "boolean") ? data[_this.response.last] : false));
             },
@@ -1919,8 +1922,8 @@ layui.define(['jquery','layer','form'], function(exports) {
                 return (typeof (data[_this.response.hide]) === "boolean") ? data[_this.response.hide] : false;
             },
             checkArr: function(){
-                var checkArr = [];
-                var checkArrData = data[_this.response.checkArr];
+                let checkArr = [];
+                let checkArrData = data[_this.response.checkArr];
                 if(typeof checkArrData === 'string'){
                     if(checkArrData.indexOf("{") > -1 && checkArrData.indexOf("}") > -1){
                         checkArrData = JSON.parse(checkArrData);
@@ -1949,7 +1952,7 @@ layui.define(['jquery','layer','form'], function(exports) {
                 return event.escape(JSON.stringify(data[_this.response.basicData])) || JSON.stringify({});
             },
             recordData: function(){
-                var recordData = _this.record ? event.cloneObj(data, [_this.response.treeId,
+                const recordData = _this.record ? event.cloneObj(data, [_this.response.treeId,
                     _this.response.parentId,
                     _this.response.title,
                     _this.response.iconClass,
@@ -1976,7 +1979,7 @@ layui.define(['jquery','layer','form'], function(exports) {
      * @Desc: 无节点数据、节点数据异常时显示dom
      */
     DTree.prototype.getNoneDom = function(){
-        var _this = this,
+        const _this = this,
             rootId = _this.obj[0].id,
             noneTitle = _this.none;
 
@@ -1997,7 +2000,7 @@ layui.define(['jquery','layer','form'], function(exports) {
      * @Param: title： 节点标题
      * @Param: fmtTitle： 节点附加标题
      * @Param: last： 是否最后一级节点
-     * @Param: ficonClass： 一级图标class
+     * @Param: ficonClass  一级图标class
      * @Param: iconClass： 二级图标class
      * @Param: checkArr： 复选框
      * @Param: spread： 是否展开
@@ -2005,7 +2008,7 @@ layui.define(['jquery','layer','form'], function(exports) {
      * @Param: hide： 是否隐藏
      */
     DTree.prototype.getDom = function(treeId, parentId, title, fmtTitle, last, ficonClass, iconClass, checkArr, level, spread, disabled, hide) {
-        var _this = this,
+        const _this = this,
             rootId = _this.obj[0].id,
             toolbar = _this.toolbar,
             checkbar = _this.checkbar;
@@ -2013,15 +2016,15 @@ layui.define(['jquery','layer','form'], function(exports) {
         return {
             fnode: function() {	// + - 图标
                 // 获取图标的变量
-                var fnodeIcon = _this.fnodeIcon,
+                const fnodeIcon = _this.fnodeIcon,
                     fleafIcon = _this.fleafIcon;
 
-                var fleafIconLeaf = _this.usefontStyle.fnode.leaf,
-                    fnodeIconOpen =  _this.usefontStyle.fnode.node.open,
-                    fnodeIconClose =  _this.usefontStyle.fnode.node.close;
+                let fleafIconLeaf = _this.usefontStyle.fnode.leaf,
+                    fnodeIconOpen = _this.usefontStyle.fnode.node.open,
+                    fnodeIconClose = _this.usefontStyle.fnode.node.close;
 
                 if(ficonClass){
-                    var iconfont = _this.iconfont;
+                    const iconfont = _this.iconfont;
                     if(typeof iconfont === 'string') {
                         fleafIconLeaf = iconfont + " " + ficonClass;
                         fnodeIconOpen = iconfont + " " + ficonClass;
@@ -2033,36 +2036,36 @@ layui.define(['jquery','layer','form'], function(exports) {
                     }
                 }
 
-                if(fnodeIcon != "-1" && fleafIcon != "-1"){	// 都加载
+                if(fnodeIcon !== "-1" && fleafIcon !== "-1"){	// 都加载
                     return last ? "<i class='"+fleafIconLeaf+" "+_this.style.dfont+" "+_this.style.ficon+"' data-spread='last' data-id='"+treeId+"' dtree-id='"+rootId+"'></i>" :
                         (spread ? "<i class='"+fnodeIconOpen+" "+_this.style.dfont+" "+_this.style.ficon+"' data-spread='open' data-id='"+treeId+"' dtree-id='"+rootId+"'></i>" : "<i class='"+fnodeIconClose+" "+_this.style.dfont+" "+_this.style.ficon+"' data-spread='close' data-id='"+treeId+"' dtree-id='"+rootId+"' data-iconClass='"+ficonClass+"'></i>");
                 }
 
-                if(fnodeIcon != "-1" && fleafIcon == "-1"){	// 加载node 隐藏leaf
+                if(fnodeIcon !== "-1" && fleafIcon === "-1"){	// 加载node 隐藏leaf
                     return last ? "<i class='"+fleafIconLeaf+" "+ICON_HIDE+" "+_this.style.dfont+" "+_this.style.ficon+"' data-spread='last' data-id='"+treeId+"' dtree-id='"+rootId+"'></i>" :
                         (spread ? "<i class='"+fnodeIconOpen+" "+_this.style.dfont+" "+_this.style.ficon+"' data-spread='open' data-id='"+treeId+"' dtree-id='"+rootId+"'></i>" : "<i class='"+fnodeIconClose+" "+_this.style.dfont+" "+_this.style.ficon+"' data-spread='close' data-id='"+treeId+"' dtree-id='"+rootId+"' data-iconClass='"+ficonClass+"'></i>");
                 }
 
-                if(fnodeIcon == "-1" && fleafIcon != "-1"){	// 隐藏node 加载leaf
+                if(fnodeIcon === "-1" && fleafIcon !== "-1"){	// 隐藏node 加载leaf
                     return last ? "<i class='"+fleafIconLeaf+" "+_this.style.dfont+" "+_this.style.ficon+"' data-spread='last' data-id='"+treeId+"' dtree-id='"+rootId+"'></i>" :
                         (spread ? "<i class='"+fnodeIconOpen+" "+_this.style.dfont+" "+_this.style.ficon+"' data-spread='open' data-id='"+treeId+"' dtree-id='"+rootId+"'></i>" : "<i class='"+fnodeIconClose+" "+_this.style.dfont+" "+_this.style.ficon+"' data-spread='close' data-id='"+treeId+"' dtree-id='"+rootId+"' data-iconClass='"+ficonClass+"'></i>");
                 }
 
-                if(fnodeIcon == "-1" && fleafIcon == "-1"){	// 都隐藏
+                if(fnodeIcon === "-1" && fleafIcon === "-1"){	// 都隐藏
                     return last ? "<i class='"+fleafIconLeaf+" "+ICON_HIDE+" "+_this.style.dfont+" "+_this.style.ficon+"' data-spread='last' data-id='"+treeId+"' dtree-id='"+rootId+"' style='display:none;'></i>" :
                         (spread ? "<i class='"+fnodeIconOpen+" "+_this.style.dfont+" "+_this.style.ficon+"' data-spread='open' data-id='"+treeId+"' dtree-id='"+rootId+"'></i>" : "<i class='"+fnodeIconClose+" "+_this.style.dfont+" "+_this.style.ficon+"' data-spread='close' data-id='"+treeId+"' dtree-id='"+rootId+"' data-iconClass='"+ficonClass+"'></i>");
                 }
             },
             node: function() {	// 二级图标样式
                 // 获取图标的变量
-                var nodeIcon = _this.nodeIcon,
+                const nodeIcon = _this.nodeIcon,
                     leafIcon = _this.leafIcon;
 
-                var sleafIconLeaf = _this.usefontStyle.snode.leaf,
-                    snodeIconOpen =  _this.usefontStyle.snode.node.open,
-                    snodeIconClose =  _this.usefontStyle.snode.node.close;
+                let sleafIconLeaf = _this.usefontStyle.snode.leaf,
+                    snodeIconOpen = _this.usefontStyle.snode.node.open,
+                    snodeIconClose = _this.usefontStyle.snode.node.close;
                 if(iconClass){
-                    var iconfont = _this.iconfont;
+                    const iconfont = _this.iconfont;
                     if(typeof iconfont === 'string') {
                         sleafIconLeaf = iconfont + " " + iconClass;
                         snodeIconOpen = iconfont + " " + iconClass;
@@ -2074,47 +2077,47 @@ layui.define(['jquery','layer','form'], function(exports) {
                     }
                 }
 
-                if(nodeIcon != "-1" && leafIcon != "-1"){	// 都加载
+                if(nodeIcon !== "-1" && leafIcon !== "-1"){	// 都加载
                     return last ? "<i class='"+sleafIconLeaf+" "+DTREEFONTSPECIAL+" "+_this.style.dfont+" "+_this.style.icon+"' data-spread='last' data-id='"+treeId+"' dtree-id='"+rootId+"' data-iconClass='"+iconClass+"'></i>" :
                         (spread ? "<i class='"+snodeIconOpen+" "+DTREEFONTSPECIAL+" "+_this.style.dfont+" "+_this.style.icon+"' data-spread='open' data-id='"+treeId+"' dtree-id='"+rootId+"' data-iconClass='"+iconClass+"'></i>" : "<i class='"+snodeIconClose+" "+DTREEFONTSPECIAL+" "+_this.style.dfont+" "+_this.style.icon+"' data-spread='close' data-id='"+treeId+"' dtree-id='"+rootId+"' data-iconClass='"+iconClass+"'></i>");
                 }
 
-                if(nodeIcon != "-1" && leafIcon == "-1"){	// 加载node 隐藏leaf
+                if(nodeIcon !== "-1" && leafIcon === "-1"){	// 加载node 隐藏leaf
                     return last ? "<i class='"+sleafIconLeaf+" "+DTREEFONTSPECIAL+" "+_this.style.dfont+" "+_this.style.icon+"' data-spread='last' data-id='"+treeId+"' dtree-id='"+rootId+"' data-iconClass='"+iconClass+"'></i>" :
                         (spread ? "<i class='"+snodeIconOpen+" "+DTREEFONTSPECIAL+" "+_this.style.dfont+" "+_this.style.icon+"' data-spread='open' data-id='"+treeId+"' dtree-id='"+rootId+"' data-iconClass='"+iconClass+"'></i>" : "<i class='"+snodeIconClose+" "+DTREEFONTSPECIAL+" "+_this.style.dfont+" "+_this.style.icon+"' data-spread='close' data-id='"+treeId+"' dtree-id='"+rootId+"' data-iconClass='"+iconClass+"'></i>");
                 }
 
-                if(nodeIcon == "-1" && leafIcon != "-1"){	// 隐藏node 加载leaf
+                if(nodeIcon === "-1" && leafIcon !== "-1"){	// 隐藏node 加载leaf
                     return last ? "<i class='"+sleafIconLeaf+" "+DTREEFONTSPECIAL+" "+_this.style.dfont+" "+_this.style.icon+"' data-spread='last' data-id='"+treeId+"' dtree-id='"+rootId+"' data-iconClass='"+iconClass+"'></i>" :
                         (spread ? "<i class='"+snodeIconOpen+" "+DTREEFONTSPECIAL+" "+_this.style.dfont+" "+_this.style.icon+"' data-spread='open' data-id='"+treeId+"' dtree-id='"+rootId+"' data-iconClass='"+iconClass+"'></i>" : "<i class='"+snodeIconClose+" "+DTREEFONTSPECIAL+" "+_this.style.dfont+" "+_this.style.icon+"' data-spread='close' data-id='"+treeId+"' dtree-id='"+rootId+"' data-iconClass='"+iconClass+"'></i>");
                 }
 
-                if(nodeIcon == "-1" && leafIcon == "-1"){	// 都隐藏
+                if(nodeIcon === "-1" && leafIcon === "-1"){	// 都隐藏
                     return last ? "<i class='"+sleafIconLeaf+" "+DTREEFONTSPECIAL+" "+_this.style.dfont+" "+_this.style.icon+"' data-spread='last' data-id='"+treeId+"' dtree-id='"+rootId+"' data-iconClass='"+iconClass+"'></i>" :
                         (spread ? "<i class='"+snodeIconOpen+" "+DTREEFONTSPECIAL+" "+_this.style.dfont+" "+_this.style.icon+"' data-spread='open' data-id='"+treeId+"' dtree-id='"+rootId+"' data-iconClass='"+iconClass+"'></i>" : "<i class='"+snodeIconClose+" "+DTREEFONTSPECIAL+" "+_this.style.dfont+" "+_this.style.icon+"' data-spread='close' data-id='"+treeId+"' dtree-id='"+rootId+"' data-iconClass='"+iconClass+"'></i>");
                 }
             },
             checkbox: function() {	// 复选框
-                var flag = false;
-                if(_this.checkbarLoad == "node"){if (checkbar) {flag = true;}} else {if (last) {if (checkbar) {flag = true;}}}
+                let flag = false;
+                if(_this.checkbarLoad === "node"){if (checkbar) {flag = true;}} else {if (last) {if (checkbar) {flag = true;}}}
 
                 if(flag){
-                    var result = "<div class='"+LI_DIV_CHECKBAR+"' data-id='"+treeId+"' dtree-id='"+rootId+"'>";
+                    let result = "<div class='" + LI_DIV_CHECKBAR + "' data-id='" + treeId + "' dtree-id='" + rootId + "'>";
                     if(checkArr && checkArr.length > 0){
 
-                        for (var i = 0; i < checkArr.length; i++) {
-                            var checkData = checkArr[i];
-                            var checked = checkData[_this.response.checked];
-                            var type = checkData[_this.response.type];
-                            var CHOOSE_CLASS = _this.usefontStyle.checkbox.out;
-                            if (checked == "2") {	//半选择
+                        for (let i = 0; i < checkArr.length; i++) {
+                            const checkData = checkArr[i];
+                            const checked = checkData[_this.response.checked];
+                            const type = checkData[_this.response.type];
+                            let CHOOSE_CLASS = _this.usefontStyle.checkbox.out;
+                            if (checked === "2") {	//半选择
                                 CHOOSE_CLASS = _this.usefontStyle.checkbox.noall + " " + _this.style.chs;
-                            } else if (checked == "1") {	//选择
+                            } else if (checked === "1") {	//选择
                                 CHOOSE_CLASS = _this.usefontStyle.checkbox.on + " " + _this.style.chs;
                             } else {	//未选择或者无值
                                 CHOOSE_CLASS = _this.usefontStyle.checkbox.out;
                             }
-                            var disClass = "";
+                            let disClass = "";
                             if(disabled){disClass = NAV_DIS;}
                             result += "<i class='"+CHOOSE_CLASS+" "+_this.style.dfont+" "+_this.style.cbox+" "+disClass+"' data-id='"+treeId+"' dtree-id='"+rootId+"' data-checked='"+checked+"' data-initchecked='"+checked+"' data-type='"+type+"' dtree-click='"+eventName.checkNodeClick+"' data-par='."+LI_CLICK_CHECKBAR+"' dtree-disabled='"+disabled+"'></i>";
                         }
@@ -2126,7 +2129,7 @@ layui.define(['jquery','layer','form'], function(exports) {
                 return "";
             },
             text: function() {	// 文字显示
-                var disClass = "";
+                let disClass = "";
                 if(disabled){disClass = NAV_DIS;}
                 return "<cite class='"+LI_DIV_TEXT_CLASS+" "+disClass+"' data-id='"+treeId+"' data-leaf='"+(last ? "leaf" : "node")+"' dtree-disabled='"+disabled+"' data-title='"+title+"' >"+fmtTitle+"</cite>";
             },
@@ -2147,25 +2150,25 @@ layui.define(['jquery','layer','form'], function(exports) {
      * @Param: hide： 是否隐藏
      */
     DTree.prototype.replaceDom = function($div, treeId, last, spread, disabled, hide) {
-        var _this = this,
+        const _this = this,
             rootId = _this.obj[0].id,
             toolbar = _this.toolbar,
             checkbar = _this.checkbar;
 
         return {
             fnode: function(ficonClass) {	// + - 图标
-                var fnode = "";
+                let fnode = "";
 
                 // 获取图标的变量
-                var fnodeIcon = _this.fnodeIcon,
+                const fnodeIcon = _this.fnodeIcon,
                     fleafIcon = _this.fleafIcon;
 
-                var fleafIconLeaf = _this.usefontStyle.fnode.leaf,
-                    fnodeIconOpen =  _this.usefontStyle.fnode.node.open,
-                    fnodeIconClose =  _this.usefontStyle.fnode.node.close;
+                let fleafIconLeaf = _this.usefontStyle.fnode.leaf,
+                    fnodeIconOpen = _this.usefontStyle.fnode.node.open,
+                    fnodeIconClose = _this.usefontStyle.fnode.node.close;
 
                 if(ficonClass){
-                    var iconfont = _this.iconfont;
+                    const iconfont = _this.iconfont;
                     if(typeof iconfont === 'string') {
                         fleafIconLeaf = iconfont + " " + ficonClass;
                         fnodeIconOpen = iconfont + " " + ficonClass;
@@ -2177,33 +2180,33 @@ layui.define(['jquery','layer','form'], function(exports) {
                     }
                 }
 
-                if(fnodeIcon != "-1" && leafIcon != "-1"){	// 都加载
+                if(fnodeIcon !== "-1" && leafIcon !== "-1"){	// 都加载
                     fnode = last ? "<i class='"+fleafIconLeaf+" "+DTREEFONTSPECIAL+" "+_this.style.dfont+" "+_this.style.icon+"' data-spread='last' data-id='"+treeId+"' dtree-id='"+rootId+"' data-iconClass='"+iconClass+"'></i>" :
                         (spread ? "<i class='"+fnodeIconOpen+" "+DTREEFONTSPECIAL+" "+_this.style.dfont+" "+_this.style.icon+"' data-spread='open' data-id='"+treeId+"' dtree-id='"+rootId+"' data-iconClass='"+iconClass+"'></i>" : "<i class='"+fnodeIconClose+" "+DTREEFONTSPECIAL+" "+_this.style.dfont+" "+_this.style.icon+"' data-spread='close' data-id='"+treeId+"' dtree-id='"+rootId+"' data-iconClass='"+ficonClass+"'></i>");
-                }else if(nodeIcon != "-1" && leafIcon == "-1"){	// 加载node 隐藏leaf
+                }else if(nodeIcon !== "-1" && leafIcon === "-1"){	// 加载node 隐藏leaf
                     fnode = last ? "<i class='"+fleafIconLeaf+" "+DTREEFONTSPECIAL+" "+_this.style.dfont+" "+_this.style.icon+"' data-spread='last' data-id='"+treeId+"' dtree-id='"+rootId+"' data-iconClass='"+iconClass+"'></i>" :
                         (spread ? "<i class='"+fnodeIconOpen+" "+DTREEFONTSPECIAL+" "+_this.style.dfont+" "+_this.style.icon+"' data-spread='open' data-id='"+treeId+"' dtree-id='"+rootId+"' data-iconClass='"+iconClass+"'></i>" : "<i class='"+fnodeIconClose+" "+DTREEFONTSPECIAL+" "+_this.style.dfont+" "+_this.style.icon+"' data-spread='close' data-id='"+treeId+"' dtree-id='"+rootId+"' data-iconClass='"+ficonClass+"'></i>");
-                }else if(nodeIcon == "-1" && leafIcon != "-1"){	// 隐藏node 加载leaf
+                }else if(nodeIcon === "-1" && leafIcon !== "-1"){	// 隐藏node 加载leaf
                     fnode = last ? "<i class='"+fleafIconLeaf+" "+DTREEFONTSPECIAL+" "+_this.style.dfont+" "+_this.style.icon+"' data-spread='last' data-id='"+treeId+"' dtree-id='"+rootId+"' data-iconClass='"+iconClass+"'></i>" :
                         (spread ? "<i class='"+fnodeIconOpen+" "+DTREEFONTSPECIAL+" "+_this.style.dfont+" "+_this.style.icon+"' data-spread='open' data-id='"+treeId+"' dtree-id='"+rootId+"' data-iconClass='"+iconClass+"'></i>" : "<i class='"+fnodeIconClose+" "+DTREEFONTSPECIAL+" "+_this.style.dfont+" "+_this.style.icon+"' data-spread='close' data-id='"+treeId+"' dtree-id='"+rootId+"' data-iconClass='"+ficonClass+"'></i>");
-                }else if(nodeIcon == "-1" && leafIcon == "-1"){	// 都隐藏
+                }else if(nodeIcon === "-1" && leafIcon === "-1"){	// 都隐藏
                     fnode = last ? "<i class='"+fleafIconLeaf+" "+DTREEFONTSPECIAL+" "+_this.style.dfont+" "+_this.style.icon+"' data-spread='last' data-id='"+treeId+"' dtree-id='"+rootId+"' data-iconClass='"+iconClass+"'></i>" :
                         (spread ? "<i class='"+fnodeIconOpen+" "+DTREEFONTSPECIAL+" "+_this.style.dfont+" "+_this.style.icon+"' data-spread='open' data-id='"+treeId+"' dtree-id='"+rootId+"' data-iconClass='"+iconClass+"'></i>" : "<i class='"+fnodeIconClose+" "+DTREEFONTSPECIAL+" "+_this.style.dfont+" "+_this.style.icon+"' data-spread='close' data-id='"+treeId+"' dtree-id='"+rootId+"' data-iconClass='"+ficonClass+"'></i>");
                 }
-                if(fnode != ""){_this.getNodeDom($div).fnode().replaceWith($(fnode));}
+                if(fnode !== ""){_this.getNodeDom($div).fnode().replaceWith($(fnode));}
             },
             node: function(iconClass) {	// 二级图标样式
-                var snode = "";
+                let snode = "";
 
                 // 获取图标的变量
-                var nodeIcon = _this.nodeIcon,
+                const nodeIcon = _this.nodeIcon,
                     leafIcon = _this.leafIcon;
 
-                var sleafIconLeaf = _this.usefontStyle.snode.leaf,
-                    snodeIconOpen =  _this.usefontStyle.snode.node.open,
-                    snodeIconClose =  _this.usefontStyle.snode.node.close;
+                let sleafIconLeaf = _this.usefontStyle.snode.leaf,
+                    snodeIconOpen = _this.usefontStyle.snode.node.open,
+                    snodeIconClose = _this.usefontStyle.snode.node.close;
                 if(iconClass){
-                    var iconfont = _this.iconfont;
+                    const iconfont = _this.iconfont;
                     if(typeof iconfont === 'string') {
                         sleafIconLeaf = iconfont + " " + iconClass;
                         snodeIconOpen = iconfont + " " + iconClass;
@@ -2215,42 +2218,42 @@ layui.define(['jquery','layer','form'], function(exports) {
                     }
                 }
 
-                if(nodeIcon != "-1" && leafIcon != "-1"){	// 都加载
+                if(nodeIcon !== "-1" && leafIcon !== "-1"){	// 都加载
                     snode = last ? "<i class='"+sleafIconLeaf+" "+DTREEFONTSPECIAL+" "+_this.style.dfont+" "+_this.style.icon+"' data-spread='last' data-id='"+treeId+"' dtree-id='"+rootId+"' data-iconClass='"+iconClass+"'></i>" :
                         (spread ? "<i class='"+snodeIconOpen+" "+DTREEFONTSPECIAL+" "+_this.style.dfont+" "+_this.style.icon+"' data-spread='open' data-id='"+treeId+"' dtree-id='"+rootId+"' data-iconClass='"+iconClass+"'></i>" : "<i class='"+snodeIconClose+" "+DTREEFONTSPECIAL+" "+_this.style.dfont+" "+_this.style.icon+"' data-spread='close' data-id='"+treeId+"' dtree-id='"+rootId+"' data-iconClass='"+iconClass+"'></i>");
-                }else if(nodeIcon != "-1" && leafIcon == "-1"){	// 加载node 隐藏leaf
+                }else if(nodeIcon !== "-1" && leafIcon === "-1"){	// 加载node 隐藏leaf
                     snode = last ? "<i class='"+sleafIconLeaf+" "+DTREEFONTSPECIAL+" "+_this.style.dfont+" "+_this.style.icon+"' data-spread='last' data-id='"+treeId+"' dtree-id='"+rootId+"' data-iconClass='"+iconClass+"'></i>" :
                         (spread ? "<i class='"+snodeIconOpen+" "+DTREEFONTSPECIAL+" "+_this.style.dfont+" "+_this.style.icon+"' data-spread='open' data-id='"+treeId+"' dtree-id='"+rootId+"' data-iconClass='"+iconClass+"'></i>" : "<i class='"+snodeIconClose+" "+DTREEFONTSPECIAL+" "+_this.style.dfont+" "+_this.style.icon+"' data-spread='close' data-id='"+treeId+"' dtree-id='"+rootId+"' data-iconClass='"+iconClass+"'></i>");
-                }else if(nodeIcon == "-1" && leafIcon != "-1"){	// 隐藏node 加载leaf
+                }else if(nodeIcon === "-1" && leafIcon !== "-1"){	// 隐藏node 加载leaf
                     snode = last ? "<i class='"+sleafIconLeaf+" "+DTREEFONTSPECIAL+" "+_this.style.dfont+" "+_this.style.icon+"' data-spread='last' data-id='"+treeId+"' dtree-id='"+rootId+"' data-iconClass='"+iconClass+"'></i>" :
                         (spread ? "<i class='"+snodeIconOpen+" "+DTREEFONTSPECIAL+" "+_this.style.dfont+" "+_this.style.icon+"' data-spread='open' data-id='"+treeId+"' dtree-id='"+rootId+"' data-iconClass='"+iconClass+"'></i>" : "<i class='"+snodeIconClose+" "+DTREEFONTSPECIAL+" "+_this.style.dfont+" "+_this.style.icon+"' data-spread='close' data-id='"+treeId+"' dtree-id='"+rootId+"' data-iconClass='"+iconClass+"'></i>");
-                }else if(nodeIcon == "-1" && leafIcon == "-1"){	// 都隐藏
+                }else if(nodeIcon === "-1" && leafIcon === "-1"){	// 都隐藏
                     snode = last ? "<i class='"+sleafIconLeaf+" "+DTREEFONTSPECIAL+" "+_this.style.dfont+" "+_this.style.icon+"' data-spread='last' data-id='"+treeId+"' dtree-id='"+rootId+"' data-iconClass='"+iconClass+"'></i>" :
                         (spread ? "<i class='"+snodeIconOpen+" "+DTREEFONTSPECIAL+" "+_this.style.dfont+" "+_this.style.icon+"' data-spread='open' data-id='"+treeId+"' dtree-id='"+rootId+"' data-iconClass='"+iconClass+"'></i>" : "<i class='"+snodeIconClose+" "+DTREEFONTSPECIAL+" "+_this.style.dfont+" "+_this.style.icon+"' data-spread='close' data-id='"+treeId+"' dtree-id='"+rootId+"' data-iconClass='"+iconClass+"'></i>");
                 }
-                if(snode != ""){_this.getNodeDom($div).snode().replaceWith($(snode));}
+                if(snode !== ""){_this.getNodeDom($div).snode().replaceWith($(snode));}
             },
             checkbox: function(checkArr) {	// 复选框
-                var flag = false;
-                if(_this.checkbarLoad == "node"){if (checkbar) {flag = true;}} else {if (last) {if (checkbar) {flag = true;}}}
+                let flag = false;
+                if(_this.checkbarLoad === "node"){if (checkbar) {flag = true;}} else {if (last) {if (checkbar) {flag = true;}}}
 
                 if(flag){
-                    var result = "<div class='"+LI_DIV_CHECKBAR+"' data-id='"+treeId+"' dtree-id='"+rootId+"'>";
+                    let result = "<div class='" + LI_DIV_CHECKBAR + "' data-id='" + treeId + "' dtree-id='" + rootId + "'>";
                     if(checkArr && checkArr.length > 0){
 
-                        for (var i = 0; i < checkArr.length; i++) {
-                            var checkData = checkArr[i];
-                            var checked = checkData[_this.response.checked];
-                            var type = checkData[_this.response.type];
-                            var CHOOSE_CLASS = _this.usefontStyle.checkbox.out;
-                            if (checked == "2") {	//半选择
+                        for (let i = 0; i < checkArr.length; i++) {
+                            const checkData = checkArr[i];
+                            const checked = checkData[_this.response.checked];
+                            const type = checkData[_this.response.type];
+                            let CHOOSE_CLASS = _this.usefontStyle.checkbox.out;
+                            if (checked === "2") {	//半选择
                                 CHOOSE_CLASS = _this.usefontStyle.checkbox.noall + " " + _this.style.chs;
-                            } else if (checked == "1") {	//选择
+                            } else if (checked === "1") {	//选择
                                 CHOOSE_CLASS = _this.usefontStyle.checkbox.on + " " + _this.style.chs;
                             } else {	//未选择或者无值
                                 CHOOSE_CLASS = _this.usefontStyle.checkbox.out;
                             }
-                            var disClass = "";
+                            let disClass = "";
                             if(disabled){disClass = NAV_DIS;}
                             result += "<i class='"+CHOOSE_CLASS+" "+_this.style.dfont+" "+_this.style.cbox+" "+disClass+"' data-id='"+treeId+"' dtree-id='"+rootId+"' data-checked='"+checked+"' data-initchecked='"+checked+"' data-type='"+type+"' dtree-click='"+eventName.checkNodeClick+"' data-par='."+LI_CLICK_CHECKBAR+"' dtree-disabled='"+disabled+"'></i>";
                         }
@@ -2260,30 +2263,30 @@ layui.define(['jquery','layer','form'], function(exports) {
                 }
             },
             text: function(title) {	// 文字显示
-                var disClass = "";
+                let disClass = "";
                 if(disabled){disClass = NAV_DIS;}
-                var cite = "<cite class='"+LI_DIV_TEXT_CLASS+" "+disClass+"' data-id='"+treeId+"' data-leaf='"+(last ? "leaf" : "node")+"' dtree-disabled='"+disabled+"' >"+title+"</cite>"
+                const cite = "<cite class='" + LI_DIV_TEXT_CLASS + " " + disClass + "' data-id='" + treeId + "' data-leaf='" + (last ? "leaf" : "node") + "' dtree-disabled='" + disabled + "' >" + title + "</cite>";
                 _this.getNodeDom($div).cite().replaceWith($(cite));
             },
             ul: function() {	//子节点ul
-                var ul = last ? "<ul class='"+LI_NAV_CHILD+"' data-id='"+treeId+"' dtree-id='"+rootId+"'></ul>" :
-                    (spread ? "<ul class='"+LI_NAV_CHILD+" "+NAV_SHOW+"' data-id='"+treeId+"' dtree-id='"+rootId+"'></ul>" : "<ul class='"+LI_NAV_CHILD+"' data-id='"+treeId+"' dtree-id='"+rootId+"'></ul>");
+                const ul = last ? "<ul class='" + LI_NAV_CHILD + "' data-id='" + treeId + "' dtree-id='" + rootId + "'></ul>" :
+                    (spread ? "<ul class='" + LI_NAV_CHILD + " " + NAV_SHOW + "' data-id='" + treeId + "' dtree-id='" + rootId + "'></ul>" : "<ul class='" + LI_NAV_CHILD + "' data-id='" + treeId + "' dtree-id='" + rootId + "'></ul>");
                 _this.getNodeDom($div).nextUl().replaceWith($(ul));
             },
             div: function(){
                 $div.attr("data-id", treeId);
             },
             basicData: function(basicData){
-                basicData = (basicData == "{}") ? "" : basicData;
+                basicData = (basicData === "{}") ? "" : basicData;
                 $div.attr("data-basic", basicData);
             },
             recordData: function(recordData){
-                recordData = (recordData == "{}") ? "" : recordData;
+                recordData = (recordData === "{}") ? "" : recordData;
                 $div.attr("data-record", recordData);
             },
             p_li: function(pId){
-            	var $li = $div.parent("li");
-            	$li.attr("data-id", treeId);
+                const $li = $div.parent("li");
+                $li.attr("data-id", treeId);
                 if(pId) {
                 	$li.attr("data-pid", pId);
                 }
@@ -2312,31 +2315,31 @@ layui.define(['jquery','layer','form'], function(exports) {
      * @Param: isRoot： 当前节点是否是根节点下的节点
      */
     DTree.prototype.getLiItemDom =  function(treeId, parentId, title, fmtTitle, last, ficonClass, iconClass, checkArr, level, spread, disabled, hide, basicData, recordData, isRoot) {
-        var _this = this,
+        const _this = this,
             rootId = _this.obj[0].id;
 
-        var dom = _this.getDom(treeId, parentId, title, fmtTitle, last, ficonClass, iconClass, checkArr, level, spread, disabled, hide);
-        basicData = (basicData == "{}") ? "" : basicData;
-        recordData = (recordData == "{}") ? "" : recordData;
-        var div = "<div class='"+LI_DIV_ITEM+" "+_this.style.item+"' data-id='"+treeId+"' dtree-id='"+rootId+"' dtree-click='"+eventName.itemNodeClick+"' data-basic='"+basicData+"' data-record='"+recordData+"' dtree-disabled='"+disabled+"' dtree-hide='"+hide+"' ";
+        const dom = _this.getDom(treeId, parentId, title, fmtTitle, last, ficonClass, iconClass, checkArr, level, spread, disabled, hide);
+        basicData = (basicData === "{}") ? "" : basicData;
+        recordData = (recordData === "{}") ? "" : recordData;
+        let div = "<div class='" + LI_DIV_ITEM + " " + _this.style.item + "' data-id='" + treeId + "' dtree-id='" + rootId + "' dtree-click='" + eventName.itemNodeClick + "' data-basic='" + basicData + "' data-record='" + recordData + "' dtree-disabled='" + disabled + "' dtree-hide='" + hide + "' ";
         if(_this.toolbar){
-            if(_this.toolbarWay == "contextmenu") {
-                if(_this.toolbarLoad == "node") { div += " d-contextmenu='true'>"; }
-                if(_this.toolbarLoad == "noleaf") { if(!last){ div += " d-contextmenu='true'>"; } else { div += " d-contextmenu='false'>";} }
-                if(_this.toolbarLoad == "leaf") { if(last){ div += " d-contextmenu='true'>"; } else { div += " d-contextmenu='false'>";} }
+            if(_this.toolbarWay === "contextmenu") {
+                if(_this.toolbarLoad === "node") { div += " d-contextmenu='true'>"; }
+                if(_this.toolbarLoad === "noleaf") { if(!last){ div += " d-contextmenu='true'>"; } else { div += " d-contextmenu='false'>";} }
+                if(_this.toolbarLoad === "leaf") { if(last){ div += " d-contextmenu='true'>"; } else { div += " d-contextmenu='false'>";} }
             } else { div += " d-contextmenu='false'>"; }
         } else { div += " d-contextmenu='false'>"; }
 
-        var hideClass = "";
-        var lineClass = "";
+        let hideClass = "";
+        const lineClass = "";
         if(hide){hideClass = NAV_HIDE;}
-        var li = ["<li " + "class='"+LI_CLICK_CHECKBAR+" "+LI_NAV_ITEM+" "+hideClass+" "+lineClass+"'" + "data-id='"+treeId+"'" + "data-pid='"+(isRoot == "root" ? ((typeof parentId !== undefined && parentId != "") ? parentId : "-1") : parentId)+"'" + "dtree-id='"+rootId+"'" + "data-index='"+level+"'" + "dtree-hide='"+hide+"'" +">" +
-                  div ,
-		          dom.fnode(),
-		          dom.node(),
-		          dom.checkbox(),
-		          dom.text(),
-		          "</div>", dom.ul(), "</li>"].join("");
+        const li = ["<li " + "class='" + LI_CLICK_CHECKBAR + " " + LI_NAV_ITEM + " " + hideClass + " " + lineClass + "'" + "data-id='" + treeId + "'" + "data-pid='" + (isRoot == "root" ? ((typeof parentId !== undefined && parentId != "") ? parentId : "-1") : parentId) + "'" + "dtree-id='" + rootId + "'" + "data-index='" + level + "'" + "dtree-hide='" + hide + "'" + ">" +
+        div,
+            dom.fnode(),
+            dom.node(),
+            dom.checkbox(),
+            dom.text(),
+            "</div>", dom.ul(), "</li>"].join("");
 
         return li;
     };
@@ -2346,8 +2349,8 @@ layui.define(['jquery','layer','form'], function(exports) {
      * @Param: chooseId： 节点ID
      */
     DTree.prototype.dataInit = function(chooseId){
-        var _this = this;
-        var $div = _this.obj.find("div[data-id='"+chooseId+"']");
+        const _this = this;
+        const $div = _this.obj.find("div[data-id='" + chooseId + "']");
         if($div && $div.length > 0) {
         	_this.obj.find("."+NAV_THIS).removeClass(NAV_THIS);
         	_this.obj.find("."+_this.style.itemThis).removeClass(_this.style.itemThis);
@@ -2355,8 +2358,8 @@ layui.define(['jquery','layer','form'], function(exports) {
         	$div.addClass(_this.style.itemThis);
         	_this.setNodeParam($div);
         	// 将该节点的父节点全部展开
-        	var $li_parents = $div.parents("."+LI_NAV_ITEM);
-        	$li_parents.children("ul").addClass(NAV_SHOW);
+            const $li_parents = $div.parents("." + LI_NAV_ITEM);
+            $li_parents.children("ul").addClass(NAV_SHOW);
         	$li_parents.children("."+LI_DIV_ITEM).children("i[data-spread]."+event.trimToDot(_this.usefontStyle.fnode.node.close)).addClass(_this.usefontStyle.fnode.node.open);
         	$li_parents.children("."+LI_DIV_ITEM).children("i[data-spread]."+event.trimToDot(_this.usefontStyle.fnode.node.close)).removeClass(_this.usefontStyle.fnode.node.close);
         	$li_parents.children("."+LI_DIV_ITEM).children("i[data-spread]."+event.trimToDot(_this.usefontStyle.snode.node.close)).addClass(_this.usefontStyle.snode.node.open);
@@ -2370,8 +2373,8 @@ layui.define(['jquery','layer','form'], function(exports) {
      * @Param: chooseId： 节点ID
      */
     DTree.prototype.rollbackHtml = function(chooseId){
-    	var _this = this;
-    	if(_this.bak) {
+        const _this = this;
+        if(_this.bak) {
     		_this.obj.html(_this.bak);
     		// 取消全部选中状态
     		_this.cancelNavThis();
@@ -2408,7 +2411,7 @@ layui.define(['jquery','layer','form'], function(exports) {
      * @Desc: 取消选中当前选中的div
      */
     DTree.prototype.cancelNavThis = function(){
-        var _this = this;
+        const _this = this;
         _this.obj.find("div[data-id]").parent().find("."+NAV_THIS).removeClass(NAV_THIS);
         _this.obj.find("div[data-id]").parent().find("."+_this.style.itemThis).removeClass(_this.style.itemThis);
     }
@@ -2418,8 +2421,8 @@ layui.define(['jquery','layer','form'], function(exports) {
      * @Param: id： 当前div本身 / 当前选中div的id值
      */
     DTree.prototype.navThis = function(id){
-        var _this = this;
-        var $div = (typeof id === 'object') ? id : (_this.obj.find("div[dtree-click='"+eventName.itemNodeClick+"'][data-id='"+id+"']").length == 0) ? null : _this.obj.find("div[dtree-click='"+eventName.itemNodeClick+"'][data-id='"+id+"']");
+        const _this = this;
+        const $div = (typeof id === 'object') ? id : (_this.obj.find("div[dtree-click='" + eventName.itemNodeClick + "'][data-id='" + id + "']").length === 0) ? null : _this.obj.find("div[dtree-click='" + eventName.itemNodeClick + "'][data-id='" + id + "']");
         if($div != null) {
             _this.cancelNavThis();
             $div.addClass(NAV_THIS);
@@ -2432,16 +2435,16 @@ layui.define(['jquery','layer','form'], function(exports) {
      * @Param: $ul： JQuery对象，表示dtree中的ul节点
      */
     DTree.prototype.accordionUL = function($ul) {
-        var _this = this;
+        const _this = this;
         if(_this.accordion) {
             $ul.closest("li[data-index]").siblings("li[data-index]").children("ul[data-id]").removeClass(NAV_SHOW);
-            var $divs = $ul.closest("li[data-index]").siblings("li[data-index]").children("ul[data-id]").prev("div");
+            const $divs = $ul.closest("li[data-index]").siblings("li[data-index]").children("ul[data-id]").prev("div");
             if($divs.length && $divs.length > 0) {
-                for (var i=0; i<$divs.length; i++) {
-                    var $div = $($divs[i]);
-                    var $i_fnode = _this.getNodeDom($div).fnode(),
+                for (let i=0; i<$divs.length; i++) {
+                    const $div = $($divs[i]);
+                    const $i_fnode = _this.getNodeDom($div).fnode(),
                         $i_snode = _this.getNodeDom($div).snode();
-                    if($i_fnode.attr("data-spread") != 'last'){
+                    if($i_fnode.attr("data-spread") !== 'last'){
                         _this.operateIcon($i_fnode, $i_snode).close();
                     }
                 }
@@ -2455,16 +2458,16 @@ layui.define(['jquery','layer','form'], function(exports) {
      * @Param: $div： JQuery对象，表示当前操作的div节点
      */
     DTree.prototype.clickSpread = function($div) {
-        var _this = this;
-        var $i_fnode = _this.getNodeDom($div).fnode(),
+        const _this = this;
+        const $i_fnode = _this.getNodeDom($div).fnode(),
             $i_snode = _this.getNodeDom($div).snode(),
             $cite = _this.getNodeDom($div).cite(),
             spread = $i_fnode.attr("data-spread"),
             $ul = $div.next("ul");
 
         if ($ul.length > 0) {
-            if (spread == "close") {
-                if (_this.type=="load") {	//增加加载
+            if (spread === "close") {
+                if (_this.type==="load") {	//增加加载
                     if (_this.cache) {	//开启缓存
                         if ($ul.html()) {
                             $ul.addClass(NAV_SHOW);
@@ -2483,7 +2486,7 @@ layui.define(['jquery','layer','form'], function(exports) {
                     _this.accordionUL($ul);
                 }
                 _this.operateIcon($i_fnode, $i_snode).open();
-            } else if (spread == "open") {
+            } else if (spread === "open") {
                 $ul.removeClass(NAV_SHOW);
                 _this.operateIcon($i_fnode, $i_snode).close();
             }
@@ -2495,8 +2498,8 @@ layui.define(['jquery','layer','form'], function(exports) {
      * @Param: disabledIds： 需要设置禁用的节点id字符串集合（用,分割）/id数组
      */
     DTree.prototype.setDisabledNodes = function(disabledIds){
-        var _this = this;
-        var disabledId = [];
+        const _this = this;
+        let disabledId = [];
         if(typeof disabledIds === "string") {
         	disabledId = disabledIds.split(",");
         } else {
@@ -2504,7 +2507,7 @@ layui.define(['jquery','layer','form'], function(exports) {
         }
         
         if(disabledIds.length) {
-        	for (var i=0; i<disabledId.length; i++) {
+        	for (let i=0; i<disabledId.length; i++) {
                 _this.setDisabledNode(_this.getNodeDom(disabledId[i]).div());
             }
         } else {
@@ -2517,8 +2520,8 @@ layui.define(['jquery','layer','form'], function(exports) {
      * @Param: disabledIds： 需要设置禁用的节点id字符串集合（用,分割）/id数组
      */
     DTree.prototype.setDisabledAllNodes = function(){
-    	var _this = this;
-    	_this.obj.find("div[dtree-click='"+eventName.itemNodeClick+"']").each(function(){
+        const _this = this;
+        _this.obj.find("div[dtree-click='"+eventName.itemNodeClick+"']").each(function(){
     		var $div = $(this);
     		_this.setDisabledNode($div);
     	});
@@ -2529,10 +2532,10 @@ layui.define(['jquery','layer','form'], function(exports) {
      * @Param: $div： JQuery对象，需要设置禁用的节点
      */
     DTree.prototype.setDisabledNode = function($div){
-        var _this = this;
-        var $i = $div.children("div."+LI_DIV_CHECKBAR).children("i[data-par]");
-        var $cite = $div.children("cite[data-leaf]");
-        if($div != null && $div.attr("dtree-disabled") != "true") {
+        const _this = this;
+        const $i = $div.children("div." + LI_DIV_CHECKBAR).children("i[data-par]");
+        const $cite = $div.children("cite[data-leaf]");
+        if($div.attr("dtree-disabled") !== "true") {
             $div.attr("dtree-disabled", "true");
             $i.attr("dtree-disabled", "true");
             $i.addClass(NAV_DIS);
@@ -2546,8 +2549,8 @@ layui.define(['jquery','layer','form'], function(exports) {
      * @Param: disabledIds： 需要设置取消禁用的节点id字符串集合（用,分割）/id数组
      */
     DTree.prototype.cancelDisabledNodes = function(disabledIds){
-        var _this = this;
-        var disabledId = [];
+        const _this = this;
+        let disabledId = [];
         if(typeof disabledIds === "string") {
         	disabledId = disabledIds.split(",");
         } else {
@@ -2555,7 +2558,7 @@ layui.define(['jquery','layer','form'], function(exports) {
         }
         
         if(disabledIds.length) {
-        	for (var i=0; i<disabledId.length; i++) {
+        	for (let i=0; i<disabledId.length; i++) {
                 _this.cancelDisabledNode(_this.getNodeDom(disabledId[i]).div());
             }
         } else {
@@ -2568,10 +2571,10 @@ layui.define(['jquery','layer','form'], function(exports) {
      * @Param: $div： JQuery对象，需要设置取消禁用的节点
      */
     DTree.prototype.cancelDisabledNode = function($div){
-        var _this = this;
-        var $i = $div.children("div."+LI_DIV_CHECKBAR).children("i[data-par]");
-        var $cite = $div.children("cite[data-leaf]");
-        if($div != null && $div.attr("dtree-disabled") == "true") {
+        const _this = this;
+        const $i = $div.children("div." + LI_DIV_CHECKBAR).children("i[data-par]");
+        const $cite = $div.children("cite[data-leaf]");
+        if($div.attr("dtree-disabled") === "true") {
             $div.attr("dtree-disabled", "false");
             $i.attr("dtree-disabled", "false");
             $i.removeClass(NAV_DIS);
@@ -2585,25 +2588,26 @@ layui.define(['jquery','layer','form'], function(exports) {
      * @Param: disabledIds： 需要取值的节点id字符串集合（用,分割）/id数组
      */
     DTree.prototype.getDisabledNodesParam = function(disabledIds){
-        var _this = this;
-        var disabledId = [];
+        let $div;
+        const _this = this;
+        let disabledId = [];
         if(typeof disabledIds === "string") {
         	disabledId = disabledIds.split(",");
         } else {
         	disabledId = disabledIds;
         }
-        
-        var disabledNodes = [];
+
+        const disabledNodes = [];
         if(disabledIds.length) {
-        	for (var i=0; i<disabledId.length; i++) {
-                var $div = _this.getNodeDom(disabledId[i]).div();
-                if($div != null && $div.attr("dtree-disabled") == "true") {
+        	for (let i=0; i<disabledId.length; i++) {
+                $div = _this.getNodeDom(disabledId[i]).div();
+                if($div != null && $div.attr("dtree-disabled") === "true") {
                     disabledNodes.push(_this.getRequestParam(_this.getTempNodeParam($div)));
                 }
             }
         } else {
-        	var $div = _this.getNodeDom(disabledId+"").div();
-            if($div != null && $div.attr("dtree-disabled") == "true") {
+            $div = _this.getNodeDom(disabledId + "").div();
+            if($div != null && $div.attr("dtree-disabled") === "true") {
                 disabledNodes.push(_this.getRequestParam(_this.getTempNodeParam($div)));
             }
         }
@@ -2630,8 +2634,8 @@ layui.define(['jquery','layer','form'], function(exports) {
      * @Param: hideIds： 需要隐藏的节点id字符串集合（用,分割）/id数组
      */
     DTree.prototype.setHideNodes = function(hideIds){
-        var _this = this;
-        var hideId = [];
+        const _this = this;
+        let hideId = [];
         if(typeof hideIds === "string") {
         	hideId = hideIds.split(",");
         } else {
@@ -2652,9 +2656,9 @@ layui.define(['jquery','layer','form'], function(exports) {
      * @Param: $div： JQuery对象，需要设置隐藏的节点
      */
     DTree.prototype.setHideNode = function($div){
-        var _this = this;
-        var $li = $div.parent("li[dtree-hide]");
-        if($div != null && $div.attr("dtree-hide") != "true") {
+        const _this = this;
+        const $li = $div.parent("li[dtree-hide]");
+        if($div.attr("dtree-hide") !== "true") {
             $div.attr("dtree-hide", "true");
             $li.attr("dtree-hide", "true");
             $li.addClass(NAV_HIDE);
@@ -2667,8 +2671,8 @@ layui.define(['jquery','layer','form'], function(exports) {
      * @Param: hideIds： 需要取消隐藏的节点id字符串集合（用,分割）/id数组
      */
     DTree.prototype.cancelHideNodes = function(hideIds){
-        var _this = this;
-        var hideId = [];
+        const _this = this;
+        let hideId = [];
         if(typeof hideIds === "string") {
         	hideId = hideIds.split(",");
         } else {
@@ -2676,7 +2680,7 @@ layui.define(['jquery','layer','form'], function(exports) {
         }
         
         if(hideId.length) {
-        	for (var i=0; i<hideId.length; i++) {
+        	for (let i=0; i<hideId.length; i++) {
             	_this.cancelHideNode(_this.getNodeDom(hideId[i]).div());
             }
         } else {
@@ -2690,9 +2694,9 @@ layui.define(['jquery','layer','form'], function(exports) {
      * @Param: $div： JQuery对象，需要设置取消隐藏的节点
      */
     DTree.prototype.cancelHideNode = function($div){
-        var _this = this;
-        var $li = $div.parent("li[dtree-hide]");
-        if($div != null && $div.attr("dtree-hide") == "true") {
+        const _this = this;
+        const $li = $div.parent("li[dtree-hide]");
+        if($div.attr("dtree-hide") === "true") {
             $div.attr("dtree-hide", "false");
             $li.attr("dtree-hide", "false");
             $li.removeClass(NAV_HIDE);
@@ -2704,25 +2708,26 @@ layui.define(['jquery','layer','form'], function(exports) {
      * @Param: hideIds： 需要取值的节点id字符串集合（用,分割）/id数组
      */
     DTree.prototype.getHideNodesParam = function(hideIds){
-        var _this = this;
-        var hideId = [];
+        let $div;
+        const _this = this;
+        let hideId = [];
         if(typeof hideIds === "string") {
         	hideId = hideIds.split(",");
         } else {
         	hideId = hideIds;
         }
-        
-        var hideNodes = [];
+
+        const hideNodes = [];
         if(hideId.length) {
-        	for (var i=0; i<hideId.length; i++) {
-                var $div = _this.getNodeDom(hideId[i]).div();
-                if($div != null && $div.attr("dtree-hide") == "true") {
+        	for (let i=0; i<hideId.length; i++) {
+                $div = _this.getNodeDom(hideId[i]).div();
+                if($div != null && $div.attr("dtree-hide") === "true") {
                     hideNodes.push(_this.getRequestParam(_this.getTempNodeParam($div)));
                 }
             }
         } else {
-        	var $div = _this.getNodeDom(hideId+"").div();
-            if($div != null && $div.attr("dtree-hide") == "true") {
+            $div = _this.getNodeDom(hideId + "").div();
+            if($div != null && $div.attr("dtree-hide") === "true") {
                 hideNodes.push(_this.getRequestParam(_this.getTempNodeParam($div)));
             }
         }
@@ -2733,10 +2738,10 @@ layui.define(['jquery','layer','form'], function(exports) {
      * @Desc:  获取全部hide节点的值
      */
     DTree.prototype.getAllHideNodesParam = function(){
-        var _this = this;
-        var hideNodes = [];
+        const _this = this;
+        const hideNodes = [];
         _this.obj.find("div[dtree-click='"+eventName.itemNodeClick+"'][dtree-hide='true']").each(function(){
-            var $div = $(this);
+            const $div = $(this);
             hideNodes.push(_this.getRequestParam(_this.getTempNodeParam($div)));
         });
         return hideNodes;
@@ -2746,7 +2751,7 @@ layui.define(['jquery','layer','form'], function(exports) {
      * @Desc: 刷新树，1.清空树结构，2.清空参数，3.执行初始化方法
      */
     DTree.prototype.refreshTree = function(){
-        var _this = this;
+        const _this = this;
         _this.obj.html("");	// 清空树结构
         _this.initNodeParam(); // 清空参数
         _this.init(); // 执行初始化方法
@@ -2758,12 +2763,12 @@ layui.define(['jquery','layer','form'], function(exports) {
      * @Param: data： 当前需要渲染的数据，JSON对象、JSON集合，如不填，则调用getChild方法调用服务器加载数据
      */
     DTree.prototype.partialRefreshAdd = function($div, data){
-        var _this = this;
+        const _this = this;
         $ul = $div.next("ul");
 
         // 判断当前点击的节点是否是最后一级节点，如果是，则需要修改节点的样式
-        var $icon_i = $div.find("i[data-spread]");
-        if ($icon_i.eq(0).attr("data-spread") == "last") {
+        const $icon_i = $div.find("i[data-spread]");
+        if ($icon_i.eq(0).attr("data-spread") === "last") {
             _this.operateIcon($icon_i.eq(0), $icon_i.eq(1)).openWithLeaf();
         } else {	//如果不是，也要修改节点样式
             _this.operateIcon($icon_i.eq(0), $icon_i.eq(1)).open();
@@ -2775,10 +2780,10 @@ layui.define(['jquery','layer','form'], function(exports) {
             if(data.length && data.length > 0) {
                 _this.getChild($div, data);
             } else {
-                var parseData = _this.parseData(data);
+                const parseData = _this.parseData(data);
 
                 if(parseData.treeId()){
-                    var level = parseInt($div.parent("li").attr("data-index"))+1;
+                    const level = parseInt($div.parent("li").attr("data-index")) + 1;
                     $ul.append(_this.getLiItemDom(parseData.treeId(), parseData.parentId(), parseData.title(), parseData.fmtTitle(), parseData.last(0), parseData.ficonClass(), parseData.iconClass(), parseData.checkArr(), level, parseData.spread(), parseData.disabled(), parseData.hide(), parseData.basicData(), parseData.recordData(), "item"));
 
                     // 建造完毕后，选中该DIV
@@ -2803,16 +2808,16 @@ layui.define(['jquery','layer','form'], function(exports) {
      * @Param: data： 当前需要渲染的数据，JSON对象、字符串
      */
     DTree.prototype.partialRefreshEdit = function($div, data){
-        var _this = this;
+        const _this = this;
         $ul = $div.next("ul"),
         $p_li = $div.parent("li");
 
         if(data) {
             if(typeof data === 'object') {
-                var parseData = _this.parseData(data);
+                const parseData = _this.parseData(data);
 
                 if(parseData.treeId()){
-                    var replaceDom = _this.replaceDom($div, parseData.treeId(), parseData.last(0), parseData.spread(), parseData.disabled(), parseData.hide());
+                    const replaceDom = _this.replaceDom($div, parseData.treeId(), parseData.last(0), parseData.spread(), parseData.disabled(), parseData.hide());
                     replaceDom.div();
                     replaceDom.node(parseData.iconClass());
                     replaceDom.checkbox(parseData.checkArr());
@@ -2820,19 +2825,19 @@ layui.define(['jquery','layer','form'], function(exports) {
                     replaceDom.ul();
                     replaceDom.basicData(parseData.basicData());
                     replaceDom.recordData(parseData.recordData());
-                    
-                    var parentId = parseData.parentId();
-                    var oldParentId = $p_li.attr("data-pid");
-                    if(parentId && parentId != oldParentId) {
+
+                    const parentId = parseData.parentId();
+                    const oldParentId = $p_li.attr("data-pid");
+                    if(parentId && parentId !== oldParentId) {
                     	// 变更了父节点
                     	$p_li = replaceDom.p_li(parentId);
                     	
                     	// 根据parentId找到下挂节点的ul
-                    	var $goto_div = _this.getNodeDom(parentId).div(), 
-                    		$goto_ul = _this.getNodeDom(parentId).nextUl();
-                    	// 判断父级ul中是否还存在li,如果不存在，则需要修改节点的样式
-                        if($goto_ul.children("li").length == 0){
-                            var $icon_i = $goto_div.find("i[data-spread]");
+                        const $goto_div = _this.getNodeDom(parentId).div(),
+                            $goto_ul = _this.getNodeDom(parentId).nextUl();
+                        // 判断父级ul中是否还存在li,如果不存在，则需要修改节点的样式
+                        if($goto_ul.children("li").length === 0){
+                            const $icon_i = $goto_div.find("i[data-spread]");
                             _this.operateIcon($icon_i.eq(0), $icon_i.eq(1)).openWithLeaf();
                             $goto_ul.addClass(NAV_SHOW);
                         }
@@ -2857,7 +2862,7 @@ layui.define(['jquery','layer','form'], function(exports) {
      * @Param: $div: JQuery对象，当前被删除节点的Div
      */
     DTree.prototype.partialRefreshDel = function($div){
-        var _this = this;
+        const _this = this;
         $p_li = $div.parent("li");
         $p_ul = _this.getNodeDom($div).parentUl();
         $p_div = _this.getNodeDom($div).parentDiv();
@@ -2865,8 +2870,8 @@ layui.define(['jquery','layer','form'], function(exports) {
         $p_li.remove();
         _this.showLine($p_ul.find("li"));
         // 判断父级ul中是否还存在li,如果不存在，则需要修改节点的样式
-        if($p_ul.children("li").length == 0){
-            var $icon_i = $p_div.find("i[data-spread]");
+        if($p_ul.children("li").length === 0){
+            const $icon_i = $p_div.find("i[data-spread]");
             _this.operateIcon($icon_i.eq(0), $icon_i.eq(1)).closeWithLeaf();
         }
         _this.initNodeParam();
@@ -2878,23 +2883,23 @@ layui.define(['jquery','layer','form'], function(exports) {
      * layui-dtree群友： 没水平的水瓶提供。
      */
     DTree.prototype.fuzzySearch = function (value) {
-        var _this = this;
+        const _this = this;
         //
-        if (value.trim() == '') {
+        if (value.trim() === '') {
             _this.obj.find("li").removeClass("layui-hide").attr("dtree-hide", false)
             return
         }
         _this.obj.find("li").addClass("layui-hide").attr("dtree-hide", true)
 
-        var cites = []
-        var filterMode = _this.filterMode
+        let cites = [];
+        const filterMode = _this.filterMode;
         /*if (filterMode == 'default') {
             cites = _this.obj.find("li>div cite:contains('" + value + "')");
         }*/
         cites = _this.obj.find("li>div cite:contains('" + value + "')");
         cites.each(function (index, cite) {
-            var li = $(cite).parent().parent();
-            var curNode = _this.getParam(li.attr("data-id"));
+            const li = $(cite).parent().parent();
+            const curNode = _this.getParam(li.attr("data-id"));
             li.removeClass("layui-hide").attr("dtree-hide", false);
             // 显示所有子级
             li.find('ul li').removeClass("layui-hide").attr("dtree-hide", false);
@@ -2909,46 +2914,48 @@ layui.define(['jquery','layer','form'], function(exports) {
      * @Param: chooseIds: 需要被选中的节点id字符串集合（用,分割）/id数组/id二维数组（多级复选框）
      */
     DTree.prototype.chooseDataInit = function(chooseIds){
-        var _this = this;
+        let $i;
+        const _this = this;
         // 多级复选框二维数组
-        var chooseIdArrs = [];
-        var chooseId = [];
+        const chooseIdArrs = [];
+        let chooseId = [];
         if(typeof chooseIds === "string") {
         	chooseId = chooseIds.split(",");
         } else {
         	chooseId = chooseIds;
         }
         if(chooseId.length) {
-        	// 说明是数组
-        	for (var i=0; i<chooseId.length; i++) {
-        		var choose = chooseId[i];
-        		if(typeof chooseIds !== "string" && choose.length) {
+        	let i;
+// 说明是数组
+        	for (i = 0; i<chooseId.length; i++) {
+                const choose = chooseId[i];
+                if(typeof chooseIds !== "string" && choose.length) {
         			// 说明内部还是一个数组，将这个数组放入二维数组中
         			chooseIdArrs.push(choose);
         		}
         	}
-        	if(chooseIdArrs.length == 0) {
+        	if(chooseIdArrs.length === 0) {
         		// 说明在上一步没有收获数组，那么chooseId只为一个id数组
         		chooseIdArrs.push(chooseId);
         	}
 
         	// 遍历二维数组解析数据初始化选中
-        	for(var i=0; i<chooseIdArrs.length; i++) {
-        		var chooseIdArr = chooseIdArrs[i];
-        		for (var j=0; j<chooseIdArr.length; j++) {
-            		var $i = _this.obj.find("i[dtree-click='"+eventName.checkNodeClick+"'][data-type="+i+"][data-id="+chooseIdArr[j]+"]");
+        	for(i = 0; i<chooseIdArrs.length; i++) {
+                const chooseIdArr = chooseIdArrs[i];
+                for (let j=0; j<chooseIdArr.length; j++) {
+            		$i = _this.obj.find("i[dtree-click='"+eventName.checkNodeClick+"'][data-type="+i+"][data-id="+chooseIdArr[j]+"]");
             		_this.checkStatus($i).check();
                 }
         	}
         	
         } else {
-        	var $i = _this.obj.find("i[dtree-click='"+eventName.checkNodeClick+"'][data-id="+chooseId+"]");
-        	_this.checkStatus($i).check();
+            $i = _this.obj.find("i[dtree-click='" + eventName.checkNodeClick + "'][data-id=" + chooseId + "]");
+            _this.checkStatus($i).check();
         }
         
         
         // 展开选中节点的父节点
-        var $li_parents = _this.obj.find("i[dtree-click='"+eventName.checkNodeClick+"'][data-checked='1']").parents("."+LI_NAV_ITEM);
+        const $li_parents = _this.obj.find("i[dtree-click='" + eventName.checkNodeClick + "'][data-checked='1']").parents("." + LI_NAV_ITEM);
         $li_parents.children("ul").addClass(NAV_SHOW);
         $li_parents.children("."+LI_DIV_ITEM).children("i[data-spread]."+event.trimToDot(_this.usefontStyle.fnode.node.close)).addClass(_this.usefontStyle.fnode.node.open);
         $li_parents.children("."+LI_DIV_ITEM).children("i[data-spread]."+event.trimToDot(_this.usefontStyle.fnode.node.close)).removeClass(_this.usefontStyle.fnode.node.close);
@@ -2962,28 +2969,32 @@ layui.define(['jquery','layer','form'], function(exports) {
      * @Param: $i: JQuery对象，表示当前点击的checkbox节点
      */
     DTree.prototype.checkAllOrNot =  function($i) {
-        var _this = this;
+        let $item_i;
+        let i;
+        let item;
+        let $child_li_i;
+        const _this = this;
         //$i 当前点击的checkbox
-        var dataPar = $i.attr("data-par"),
+        const dataPar = $i.attr("data-par"),
             dataType = $i.attr("data-type"),
             $li = $i.closest(dataPar),		//当前checkbox的上级li节点
             $parent_li = $i.parents(dataPar),		//当前checkbox的所有父级li节点
             $child_li = $li.find(dataPar);	//当前checkbox的上级li节点下的所有子级li节点
 
-        if ($i.attr("data-checked") == "1") {
+        if ($i.attr("data-checked") === "1") {
             // 处理当前节点的选中状态
             _this.checkStatus($i).noCheck();
 
             // 处理子级节点的选中状态
-            var $child_li_i = $child_li.find(">."+LI_DIV_ITEM+">."+LI_DIV_CHECKBAR+">i[data-type='"+dataType+"']");
+            $child_li_i = $child_li.find(">."+LI_DIV_ITEM+">."+LI_DIV_CHECKBAR+">i[data-type='"+dataType+"']");
             _this.checkStatus($child_li_i).noCheck();
 
             // 处理父级节点的选中状态
-            for (var i = 1, item = $parent_li; i < item.length; i++) {
-                var flag = item.eq(i).find(">."+LI_NAV_CHILD+" ."+LI_DIV_CHECKBAR+">i[data-type='"+dataType+"'][data-checked='1']").length;
-                if (flag == 0) {
+            for (; i < item.length; i++) {
+                const flag = item.eq(i).find(">." + LI_NAV_CHILD + " ." + LI_DIV_CHECKBAR + ">i[data-type='" + dataType + "'][data-checked='1']").length;
+                if (flag === 0) {
                     //把父级去掉选中
-                    var $item_i = item.eq(i).find(">."+LI_DIV_ITEM+">."+LI_DIV_CHECKBAR+">i[data-type='"+dataType+"']");
+                    $item_i = item.eq(i).find(">."+LI_DIV_ITEM+">."+LI_DIV_CHECKBAR+">i[data-type='"+dataType+"']");
                     _this.checkStatus($item_i).noCheck();
                 }
             }
@@ -2992,12 +3003,14 @@ layui.define(['jquery','layer','form'], function(exports) {
             _this.checkStatus($i).check();
 
             // 处理子级节点的选中状态
-            var $child_li_i = $child_li.find(">."+LI_DIV_ITEM+">."+LI_DIV_CHECKBAR+">i[data-type='"+dataType+"']");
+            $child_li_i = $child_li.find(">." + LI_DIV_ITEM + ">." + LI_DIV_CHECKBAR + ">i[data-type='" + dataType + "']");
             _this.checkStatus($child_li_i).check();
 
             // 处理父级节点的选中状态
-            for (var i = 1, item = $parent_li; i < item.length; i++) {
-                var $item_i = item.eq(i).find(">."+LI_DIV_ITEM+">."+LI_DIV_CHECKBAR+">i[data-type='"+dataType+"']");
+            i = 1;
+            item = $parent_li;
+            for (; i < item.length; i++) {
+                $item_i = item.eq(i).find(">." + LI_DIV_ITEM + ">." + LI_DIV_CHECKBAR + ">i[data-type='" + dataType + "']");
                 //把父级选中
                 _this.checkStatus($item_i).check();
             }
@@ -3009,28 +3022,32 @@ layui.define(['jquery','layer','form'], function(exports) {
      * @Param: $i: JQuery对象，表示当前点击的checkbox节点
      */
     DTree.prototype.checkAllOrNoallOrNot =  function($i) {
-        var _this = this;
+        let $item_i;
+        let i;
+        let item;
+        let $child_li_i;
+        const _this = this;
         //$i 当前点击的checkbox
-        var $div = $i.closest("."+LI_DIV_ITEM),
+        const $div = $i.closest("." + LI_DIV_ITEM),
             dataPar = $i.attr("data-par"),
             dataType = $i.attr("data-type"),
             $li = $i.closest(dataPar),		//当前checkbox的上级li节点
             $parent_li = $i.parents(dataPar),		//当前checkbox的所有父级li节点
             $child_li = $li.find(dataPar);	//当前checkbox的上级li节点下的所有子级li节点
 
-        if ($i.attr("data-checked") == "1") {	//当前复选框为选中状态，点击后变为未选中状态
+        if ($i.attr("data-checked") === "1") {	//当前复选框为选中状态，点击后变为未选中状态
             // 处理当前节点的选中状态
             _this.checkStatus($i).noCheck();
 
             // 处理子级节点的选中状态
-            var $child_li_i = $child_li.find(">."+LI_DIV_ITEM+">."+LI_DIV_CHECKBAR+">i[data-type='"+dataType+"']");
+            $child_li_i = $child_li.find(">."+LI_DIV_ITEM+">."+LI_DIV_CHECKBAR+">i[data-type='"+dataType+"']");
             _this.checkStatus($child_li_i).noCheck();
 
             // 处理父级节点的选中状态
-            for (var i = 1, item = $parent_li; i < item.length; i++) {
-                var flag = item.eq(i).find(">."+LI_NAV_CHILD+" ."+LI_DIV_CHECKBAR+">i[data-type='"+dataType+"'][data-checked='1']").length;
-                var $item_i = item.eq(i).find(">."+LI_DIV_ITEM+">."+LI_DIV_CHECKBAR+">i[data-type='"+dataType+"']");
-                if (flag == 0) {
+            for (; i < item.length; i++) {
+                const flag = item.eq(i).find(">." + LI_NAV_CHILD + " ." + LI_DIV_CHECKBAR + ">i[data-type='" + dataType + "'][data-checked='1']").length;
+                $item_i = item.eq(i).find(">."+LI_DIV_ITEM+">."+LI_DIV_CHECKBAR+">i[data-type='"+dataType+"']");
+                if (flag === 0) {
                     //把父级去掉选中
                     _this.checkStatus($item_i).noCheck();
                 } else {
@@ -3043,15 +3060,17 @@ layui.define(['jquery','layer','form'], function(exports) {
             _this.checkStatus($i).check();
 
             // 处理子级节点的选中状态
-            var $child_li_i = $child_li.find(">."+LI_DIV_ITEM+">."+LI_DIV_CHECKBAR+">i[data-type='"+dataType+"']");
+            $child_li_i = $child_li.find(">." + LI_DIV_ITEM + ">." + LI_DIV_CHECKBAR + ">i[data-type='" + dataType + "']");
             _this.checkStatus($child_li_i).check();
 
             // 处理父级节点的选中状态
-            for (var i = 1, item = $parent_li; i < item.length; i++) {
-                var flag1 = item.eq(i).find(">."+LI_NAV_CHILD+" ."+LI_DIV_CHECKBAR+">i[data-type='"+dataType+"'][data-checked='1']").length;
-                var flag2 = item.eq(i).find(">."+LI_NAV_CHILD+" ."+LI_DIV_CHECKBAR+">i[data-type='"+dataType+"']").length;
-                var $item_i = item.eq(i).find(">."+LI_DIV_ITEM+">."+LI_DIV_CHECKBAR+">i[data-type='"+dataType+"']");
-                if (flag1 != flag2) {
+            i = 1;
+            item = $parent_li;
+            for (; i < item.length; i++) {
+                const flag1 = item.eq(i).find(">." + LI_NAV_CHILD + " ." + LI_DIV_CHECKBAR + ">i[data-type='" + dataType + "'][data-checked='1']").length;
+                const flag2 = item.eq(i).find(">." + LI_NAV_CHILD + " ." + LI_DIV_CHECKBAR + ">i[data-type='" + dataType + "']").length;
+                $item_i = item.eq(i).find(">." + LI_DIV_ITEM + ">." + LI_DIV_CHECKBAR + ">i[data-type='" + dataType + "']");
+                if (flag1 !== flag2) {
                     // 父级复选框半选
                     _this.checkStatus($item_i).noallCheck();
                 } else {
@@ -3067,21 +3086,22 @@ layui.define(['jquery','layer','form'], function(exports) {
      * @Param: $i: JQuery对象，表示当前点击的checkbox节点
      */
     DTree.prototype.checkAllOrPcascOrNot = function($i) {
-        var _this = this;
+        let $child_li_i;
+        const _this = this;
         //$i 当前点击的checkbox
-        var $div = $i.closest("."+LI_DIV_ITEM),
+        const $div = $i.closest("." + LI_DIV_ITEM),
             dataPar = $i.attr("data-par"),
             dataType = $i.attr("data-type"),
             $li = $i.closest(dataPar),		//当前checkbox的上级li节点
             $parent_li = $i.parents(dataPar),		//当前checkbox的所有父级li节点
             $child_li = $li.find(dataPar);	//当前checkbox的上级li节点下的所有子级li节点
 
-        if ($i.attr("data-checked") == "1") {	//当前复选框为选中状态，点击后变为未选中状态
+        if ($i.attr("data-checked") === "1") {	//当前复选框为选中状态，点击后变为未选中状态
             // 处理当前节点的选中状态
             _this.checkStatus($i).noCheck();
 
             // 处理子级节点的选中状态
-            var $child_li_i = $child_li.find(">."+LI_DIV_ITEM+">."+LI_DIV_CHECKBAR+">i[data-type='"+dataType+"']");
+            $child_li_i = $child_li.find(">."+LI_DIV_ITEM+">."+LI_DIV_CHECKBAR+">i[data-type='"+dataType+"']");
             _this.checkStatus($child_li_i).noCheck();
 
         } else {		//当前复选框为未选中状态，点击后变为选中状态
@@ -3089,7 +3109,7 @@ layui.define(['jquery','layer','form'], function(exports) {
             _this.checkStatus($i).check();
 
             // 处理子级节点的选中状态
-            var $child_li_i = $child_li.find(">."+LI_DIV_ITEM+">."+LI_DIV_CHECKBAR+">i[data-type='"+dataType+"']");
+            $child_li_i = $child_li.find(">." + LI_DIV_ITEM + ">." + LI_DIV_CHECKBAR + ">i[data-type='" + dataType + "']");
             _this.checkStatus($child_li_i).check();
         }
     };
@@ -3099,16 +3119,16 @@ layui.define(['jquery','layer','form'], function(exports) {
      * @Param: $i: JQuery对象，表示当前点击的checkbox节点
      */
     DTree.prototype.checkOrNot = function($i) {
-        var _this = this;
+        const _this = this;
         //$i 当前点击的checkbox
-        var $div = $i.closest("."+LI_DIV_ITEM),
+        const $div = $i.closest("." + LI_DIV_ITEM),
             dataPar = $i.attr("data-par"),
             dataType = $i.attr("data-type"),
             $li = $i.closest(dataPar),		//当前checkbox的上级li节点
             $parent_li = $i.parents(dataPar),		//当前checkbox的所有父级li节点
             $child_li = $li.find(dataPar);	//当前checkbox的上级li节点下的所有子级li节点
 
-        if ($i.attr("data-checked") == "1") {	//当前复选框为选中状态，点击后变为未选中状态
+        if ($i.attr("data-checked") === "1") {	//当前复选框为选中状态，点击后变为未选中状态
             // 处理当前节点的选中状态
             _this.checkStatus($i).noCheck();
         } else {		//当前复选框为未选中状态，点击后变为选中状态
@@ -3122,21 +3142,21 @@ layui.define(['jquery','layer','form'], function(exports) {
      * @Param: $i: JQuery对象，表示当前点击的checkbox节点
      */
     DTree.prototype.checkOnly = function($i) {
-        var _this = this;
+        const _this = this;
         //$i 当前点击的checkbox
-        var $div = $i.closest("."+LI_DIV_ITEM),
+        const $div = $i.closest("." + LI_DIV_ITEM),
             dataPar = $i.attr("data-par"),
             dataType = $i.attr("data-type"),
             $li = $i.closest(dataPar),		//当前checkbox的上级li节点
             $parent_li = $i.parents(dataPar),		//当前checkbox的所有父级li节点
             $child_li = $li.find(dataPar);	//当前checkbox的上级li节点下的所有子级li节点
 
-        var checked = $i.attr("data-checked");
+        const checked = $i.attr("data-checked");
         // 将全部节点全部设为未选中状态
-        var $all_i = _this.obj.find("i[data-checked]");
+        const $all_i = _this.obj.find("i[data-checked]");
         _this.checkStatus($all_i).noCheck();
 
-        if (checked != "1") {	//当前复选框为未选中状态，点击后变为选中状态
+        if (checked !== "1") {	//当前复选框为未选中状态，点击后变为选中状态
             // 处理当前节点的选中状态
             _this.checkStatus($i).check();
         }
@@ -3147,21 +3167,21 @@ layui.define(['jquery','layer','form'], function(exports) {
      * @Param: $i: JQuery对象，表示当前点击的checkbox节点
      */
     DTree.prototype.changeCheck = function($i) {
-        var _this = this;
-        var temp = _this.temp;
+        const _this = this;
+        const temp = _this.temp;
         if(typeof $i === 'undefined') {
             $i = temp[0];
         }
         // 复选框选中事件
-        if (_this.checkbarType == "all") {
+        if (_this.checkbarType === "all") {
             _this.checkAllOrNot($i);
-        } else if(_this.checkbarType == "no-all") {
+        } else if(_this.checkbarType === "no-all") {
             _this.checkAllOrNoallOrNot($i);
-        } else if(_this.checkbarType == "p-casc") {
+        } else if(_this.checkbarType === "p-casc") {
             _this.checkAllOrPcascOrNot($i);
-        } else if(_this.checkbarType == "self") {
+        } else if(_this.checkbarType === "self") {
             _this.checkOrNot($i);
-        } else if(_this.checkbarType == "only") {
+        } else if(_this.checkbarType === "only") {
             _this.checkOnly($i);
         } else {
             _this.checkAllOrNot($i);
@@ -3173,8 +3193,8 @@ layui.define(['jquery','layer','form'], function(exports) {
         }
         
         // 获取复选框选中节点的内容
-        var checkbarNodes = _this.setAndGetCheckbarNodesParam(true);
-        
+        const checkbarNodes = _this.setAndGetCheckbarNodesParam(true);
+
         // 用户自定义想做的事情
         _this.checkbarFun.chooseDone(checkbarNodes);
         layui.event.call(this, MOD_NAME, "chooseDone("+$(_this.obj)[0].id+")", {"checkbarParams": checkbarNodes});
@@ -3185,12 +3205,12 @@ layui.define(['jquery','layer','form'], function(exports) {
      * @Desc: 复选框半选状态初始化设置，树节点渲染完毕后重置半选状态
      */
     DTree.prototype.initNoAllCheck = function(){
-        var _this = this;
+        const _this = this;
         //1.获取所有选中节点
-        var $is = _this.obj.find("i[data-checked='1']");
+        const $is = _this.obj.find("i[data-checked='1']");
         if($is.length > 0){
-            for ( var key = 0; key < $is.length; key++) {
-                var $i = $($is[key]),
+            for (let key = 0; key < $is.length; key++) {
+                const $i = $($is[key]),
                     dataPar = $i.attr("data-par"),
                     dataType = $i.attr("data-type"),
                     $li = $i.closest(dataPar),		//当前checkbox的上级li节点
@@ -3198,11 +3218,12 @@ layui.define(['jquery','layer','form'], function(exports) {
                     $child_li = $li.find(dataPar);	//当前checkbox的上级li节点下的所有子级li节点
 
                 // 处理父级节点的选中状态
-                for (var i = 1, item = $parent_li; i < item.length; i++) {
-                    var flag1 = item.eq(i).find(">."+LI_NAV_CHILD+" ."+LI_DIV_CHECKBAR+">i[data-type='"+dataType+"'][data-checked='1']").length;
-                    var flag2 = item.eq(i).find(">."+LI_NAV_CHILD+" ."+LI_DIV_CHECKBAR+">i[data-type='"+dataType+"']").length;
-                    var $item_i = item.eq(i).find(">."+LI_DIV_ITEM+">."+LI_DIV_CHECKBAR+">i[data-type='"+dataType+"']");
-                    if (flag1 != flag2) {
+                let i = 1, item = $parent_li;
+                for (; i < item.length; i++) {
+                    const flag1 = item.eq(i).find(">." + LI_NAV_CHILD + " ." + LI_DIV_CHECKBAR + ">i[data-type='" + dataType + "'][data-checked='1']").length;
+                    const flag2 = item.eq(i).find(">." + LI_NAV_CHILD + " ." + LI_DIV_CHECKBAR + ">i[data-type='" + dataType + "']").length;
+                    const $item_i = item.eq(i).find(">." + LI_DIV_ITEM + ">." + LI_DIV_CHECKBAR + ">i[data-type='" + dataType + "']");
+                    if (flag1 !== flag2) {
                         // 父级复选框半选
                         _this.checkStatus($item_i).noallCheck();
                     } else {
@@ -3218,12 +3239,12 @@ layui.define(['jquery','layer','form'], function(exports) {
      * @Desc: 复选框选中状态初始化设置，树节点渲染完毕后重置选中状态
      */
     DTree.prototype.initAllCheck = function(){
-        var _this = this;
+        const _this = this;
         //1.获取所有选中节点
-        var $is = _this.obj.find("i[data-checked='1']");
+        const $is = _this.obj.find("i[data-checked='1']");
         if($is.length > 0){
-            for ( var key = 0; key < $is.length; key++) {
-                var $i = $($is[key]),
+            for (let key = 0; key < $is.length; key++) {
+                const $i = $($is[key]),
                     dataPar = $i.attr("data-par"),
                     dataType = $i.attr("data-type"),
                     $li = $i.closest(dataPar),		//当前checkbox的上级li节点
@@ -3231,8 +3252,9 @@ layui.define(['jquery','layer','form'], function(exports) {
                     $child_li = $li.find(dataPar);	//当前checkbox的上级li节点下的所有子级li节点
 
                 // 处理父级节点的选中状态
-                for (var i = 1, item = $parent_li; i < item.length; i++) {
-                    var $item_i = item.eq(i).find(">."+LI_DIV_ITEM+">."+LI_DIV_CHECKBAR+">i[data-type='"+dataType+"']");
+                let i = 1, item = $parent_li;
+                for (; i < item.length; i++) {
+                    const $item_i = item.eq(i).find(">." + LI_DIV_ITEM + ">." + LI_DIV_CHECKBAR + ">i[data-type='" + dataType + "']");
                     // 父级复选框全选
                     _this.checkStatus($item_i).check();
                 }
@@ -3245,7 +3267,7 @@ layui.define(['jquery','layer','form'], function(exports) {
      * @Param: $i: JQuery对象，表示当前点击的checkbox节点
      */
     DTree.prototype.checkStatus = function($i) {
-        var _this = this;
+        const _this = this;
         return {
             check: function(){
                 $i.removeClass(_this.usefontStyle.checkbox.out);
@@ -3276,14 +3298,14 @@ layui.define(['jquery','layer','form'], function(exports) {
      * @Param: requestParamFlag: 设置复选框返回值的数据结构， true：基于请求类型的返回对象数组， false：原始的节点返回对象数组
      */ 
     DTree.prototype.setAndGetCheckbarNodesParam = function(requestParamFlag) {
-        var _this = this;
+        const _this = this;
         //操作前先清空
         _this.checkbarNode = [];
         // 选择所有复选框节点
-        if (_this.checkbarData == "change"){	//记录变更数据
+        if (_this.checkbarData === "change"){	//记录变更数据
             _this.obj.find("i[data-par][dtree-disabled='false']").each(function(){
-                var $i = $(this), $div = $i.closest("."+LI_DIV_ITEM);
-                if ($i.attr("data-checked") != $i.attr("data-initchecked")) {
+                const $i = $(this), $div = $i.closest("." + LI_DIV_ITEM);
+                if ($i.attr("data-checked") !== $i.attr("data-initchecked")) {
                 	if(requestParamFlag) {
                 		_this.checkbarNode.push(_this.getRequestParam(_this.getCheckbarNodeParam($div, $i)));
                 	} else {
@@ -3291,27 +3313,27 @@ layui.define(['jquery','layer','form'], function(exports) {
                 	}
                 }
             });
-        } else if (_this.checkbarData == "all"){	//记录全部数据
+        } else if (_this.checkbarData === "all"){	//记录全部数据
             _this.obj.find("i[data-par][data-checked][dtree-disabled='false']").each(function(){
-                var $i = $(this), $div = $i.closest("."+LI_DIV_ITEM);
+                const $i = $(this), $div = $i.closest("." + LI_DIV_ITEM);
                 if(requestParamFlag) {
             		_this.checkbarNode.push(_this.getRequestParam(_this.getCheckbarNodeParam($div, $i)));
             	} else {
             		_this.checkbarNode.push(_this.getCheckbarNodeParam($div, $i));
             	}
             });
-        } else if (_this.checkbarData == "choose"){	//记录选中数据
+        } else if (_this.checkbarData === "choose"){	//记录选中数据
             _this.obj.find("i[data-par][data-checked='1'][dtree-disabled='false']").each(function(){
-                var $i = $(this), $div = $i.closest("."+LI_DIV_ITEM);
+                const $i = $(this), $div = $i.closest("." + LI_DIV_ITEM);
                 if(requestParamFlag) {
             		_this.checkbarNode.push(_this.getRequestParam(_this.getCheckbarNodeParam($div, $i)));
             	} else {
             		_this.checkbarNode.push(_this.getCheckbarNodeParam($div, $i));
             	}
             });
-        } else if (_this.checkbarData == "halfChoose"){	//记录选中和半选数据
+        } else if (_this.checkbarData === "halfChoose"){	//记录选中和半选数据
             _this.obj.find("i[data-par][data-checked='1'][dtree-disabled='false']").each(function(){
-                var $i = $(this), $div = $i.closest("."+LI_DIV_ITEM);
+                const $i = $(this), $div = $i.closest("." + LI_DIV_ITEM);
                 if(requestParamFlag) {
             		_this.checkbarNode.push(_this.getRequestParam(_this.getCheckbarNodeParam($div, $i)));
             	} else {
@@ -3319,7 +3341,7 @@ layui.define(['jquery','layer','form'], function(exports) {
             	}
             });
             _this.obj.find("i[data-par][data-checked='2'][dtree-disabled='false']").each(function(){
-                var $i = $(this), $div = $i.closest("."+LI_DIV_ITEM);
+                const $i = $(this), $div = $i.closest("." + LI_DIV_ITEM);
                 if(requestParamFlag) {
             		_this.checkbarNode.push(_this.getRequestParam(_this.getCheckbarNodeParam($div, $i)));
             	} else {
@@ -3334,7 +3356,7 @@ layui.define(['jquery','layer','form'], function(exports) {
      * @Desc: 获取树的复选框操作值的全部参数
      */ 
     DTree.prototype.getCheckbarNodesParam = function() {
-        var _this = this;
+        const _this = this;
         return _this.setAndGetCheckbarNodesParam(true);
     };
 
@@ -3344,16 +3366,16 @@ layui.define(['jquery','layer','form'], function(exports) {
      * @Param: $i: JQuery对象，表示当前选中的复选框节点
      */
     DTree.prototype.getCheckbarNodeParam = function($div, $i){
-        var _this = this;
-        var temp_node = {};
+        const _this = this;
+        const temp_node = {};
         temp_node.nodeId = $div.attr("data-id");
         temp_node.parentId = _this.getNodeDom($div).parentLi().attr("data-pid");
         temp_node.context = (typeof _this.formatter.title === 'function') ? _this.getNodeDom($div).cite().attr("data-title") : _this.getNodeDom($div).cite().text();
-        temp_node.leaf = _this.getNodeDom($div).cite().attr("data-leaf") == "leaf" ? true : false;
+        temp_node.leaf = _this.getNodeDom($div).cite().attr("data-leaf") === "leaf";
         temp_node.level = _this.getNodeDom($div).parentLi().attr("data-index");
-        temp_node.spread = _this.getNodeDom($div).fnode().attr("data-spread") == "open" ? true : false;
-        
-        var basicData = $div.attr("data-basic");
+        temp_node.spread = _this.getNodeDom($div).fnode().attr("data-spread") === "open";
+
+        let basicData = $div.attr("data-basic");
         if(basicData) {
         	basicData = JSON.parse(event.unescape(basicData));
         }
@@ -3374,9 +3396,9 @@ layui.define(['jquery','layer','form'], function(exports) {
      * @Desc: 获取基于返回参数的树的复选框参数，选中数据横向存储
      */
     DTree.prototype.getCheckbarJsonArrParam = function(){
-    	var _this = this;
-    	var checkbarJsonArr = {
-			nodeId: [],		//节点ID
+        const _this = this;
+        let checkbarJsonArr = {
+            nodeId: [],		//节点ID
             parentId: [],	//父节点ID
             context: [],	//节点内容
             leaf: [],		//是否叶子节点
@@ -3387,13 +3409,13 @@ layui.define(['jquery','layer','form'], function(exports) {
             initchecked: [],	//节点复选框初始状态
             basicData: [],		//用户自定义的记录节点数据
             recordData: [],		//当前data数据（排除basicData和children字段）
-    	};
-    	// 获取全部复选框选中节点
-    	var params = _this.setAndGetCheckbarNodesParam(false);
-    	if(params && params.length > 0) {
-    		for(var i=0; i<params.length; i++) { 
-    			var param = params[i];
-    			checkbarJsonArr["nodeId"].push(param["nodeId"]);
+        };
+        // 获取全部复选框选中节点
+        const params = _this.setAndGetCheckbarNodesParam(false);
+        if(params && params.length > 0) {
+    		for(let i=0; i<params.length; i++) {
+                const param = params[i];
+                checkbarJsonArr["nodeId"].push(param["nodeId"]);
     			checkbarJsonArr["parentId"].push(param["parentId"]);
     			checkbarJsonArr["context"].push(param["context"]);
     			checkbarJsonArr["leaf"].push(param["leaf"]);
@@ -3415,12 +3437,12 @@ layui.define(['jquery','layer','form'], function(exports) {
      * @Desc: 判断复选框是否发生变更
      */
     DTree.prototype.changeCheckbarNodes = function(){
-        var _this = this;
+        const _this = this;
         _this.obj.find("i[data-par]").each(function(){
-            var $i = $(this);
+            const $i = $(this);
             $div = $i.closest("."+LI_DIV_ITEM);
 
-            if ($i.attr("data-checked") != $i.attr("data-initchecked")) {
+            if ($i.attr("data-checked") !== $i.attr("data-initchecked")) {
                 return true;
             }
         });
@@ -3432,9 +3454,9 @@ layui.define(['jquery','layer','form'], function(exports) {
      * @Param: nodeId： 当前节点的ID
      */
     DTree.prototype.clickNodeCheckbar = function(nodeId){
-    	var _this = this;
-    	var $checkbar = _this.getNodeDom(nodeId).checkbox();
-    	_this.temp = [$checkbar];
+        const _this = this;
+        const $checkbar = _this.getNodeDom(nodeId).checkbox();
+        _this.temp = [$checkbar];
 		_this.changeCheck();
     }
     
@@ -3442,34 +3464,34 @@ layui.define(['jquery','layer','form'], function(exports) {
      * @Desc: 复选框全选
      */
     DTree.prototype.checkAllNode = function(){
-    	var _this = this;
-    	 var $i = _this.obj.find("i[data-par][data-checked!='1']");
-         if($i.length > 0) { _this.checkStatus($i).check(); }
+        const _this = this;
+        const $i = _this.obj.find("i[data-par][data-checked!='1']");
+        if($i.length > 0) { _this.checkStatus($i).check(); }
     }
     
     /**
      * @Desc: 取消全部复选框选中
      */
     DTree.prototype.cancelCheckedNode = function(){
-    	var _this = this;
-    	var $i = _this.obj.find("i[data-par][data-checked!='0']");
-    	if($i.length > 0) { _this.checkStatus($i).noCheck(); }
+        const _this = this;
+        const $i = _this.obj.find("i[data-par][data-checked!='0']");
+        if($i.length > 0) { _this.checkStatus($i).noCheck(); }
     }
     
     /**
      * @Desc: 反选复选框
      */
     DTree.prototype.invertCheckedNode = function(){
-    	var _this = this;
-    	if(_this.obj.find("i[data-par]").length > 0) {
-            var flag = false;
+        const _this = this;
+        if(_this.obj.find("i[data-par]").length > 0) {
+            let flag = false;
             _this.obj.find("i[data-par]").each(function(){
-                var $i = $(this);
-                if($i.attr("data-checked") == '2'){
+                const $i = $(this);
+                if($i.attr("data-checked") === '2'){
                 	flag = true;
-                }else if($i.attr("data-checked") == '0') {
+                }else if($i.attr("data-checked") === '0') {
                     _this.checkStatus($i).check();
-                }else if($i.attr("data-checked") == '1') {
+                }else if($i.attr("data-checked") === '1') {
                     _this.checkStatus($i).noCheck();
                 }
             });
@@ -3486,23 +3508,23 @@ layui.define(['jquery','layer','form'], function(exports) {
      * @Desc: 删除选中节点
      */
     DTree.prototype.removeCheckedNode = function(){
-    	var _this = this;
-    	var len = _this.obj.find("i[data-par][data-checked='1']").length;
-        if(len == 0){
+        const _this = this;
+        const len = _this.obj.find("i[data-par][data-checked='1']").length;
+        if(len === 0){
             layer.msg("请至少选中一个节点",{icon:2});
         }else{
             //操作前先清空
             _this.checkbarNode = [];
             // 选择所有复选框节点
-            var i_node = {};
+            const i_node = {};
             _this.obj.find("i[data-par][data-checked='1']").each(function(){
-                var $i = $(this), $div = $i.closest("."+LI_DIV_ITEM);
+                const $i = $(this), $div = $i.closest("." + LI_DIV_ITEM);
 
                 _this.checkbarNode.push(_this.getRequestParam(_this.getCheckbarNodeParam($div, $i)));
             });
 
             layer.confirm('确定要删除选中节点？', {icon: 3, title:'删除选中节点'}, function(index1){
-                var flag = _this.menubarFun.remove(_this.checkbarNode);
+                const flag = _this.menubarFun.remove(_this.checkbarNode);
                 if(flag){
                     _this.obj.find("i[data-par][data-checked='1']").closest("."+LI_DIV_ITEM).next("ul").remove();
                     _this.obj.find("i[data-par][data-checked='1']").closest("."+LI_DIV_ITEM).remove();
@@ -3519,13 +3541,13 @@ layui.define(['jquery','layer','form'], function(exports) {
      * @Desc: 初始化菜单栏和工具栏的div
      */ 
     DTree.prototype.initTreePlus = function(){
-        var _this = this;
+        const _this = this;
         // 初始化菜单栏和工具栏的div
         _this.obj.prevAll('div#dtree_menubar_'+_this.obj[0].id).remove();
         _this.toolbarMenu = {};
         if(_this.menubar && _this.menubarTips.group && _this.menubarTips.group.length > 0) _this.obj.before("<div class='"+LI_DIV_MENUBAR+"' id='dtree_menubar_"+_this.obj[0].id+"'><div class='layui-btn-group'></div></div>");
         if(_this.toolbar){
-            if(_this.toolbarWay == "contextmenu") {
+            if(_this.toolbarWay === "contextmenu") {
                 _this.obj.prevAll('div#dtree_toolbar_'+_this.obj[0].id).remove();
                 if(_this.toolbarShow && _this.toolbarShow.length > 0) {
                     _this.obj.before("<div class='"+LI_DIV_TOOLBAR+" layui-nav' id='dtree_toolbar_"+_this.obj[0].id+"'><div class='layui-nav-item'><dl class='layui-nav-child layui-anim'></dl></div></div>");
@@ -3539,20 +3561,21 @@ layui.define(['jquery','layer','form'], function(exports) {
      * @Desc: 开启工具栏和菜单栏
      */ 
     DTree.prototype.openTreePlus = function(){
-        var _this = this;
+        let i;
+        const _this = this;
         // 先对工具栏做处理，因为菜单栏可能会与工具栏产生关联。
-        var ggMenu = [];
+        const ggMenu = [];
         if(_this.toolbar) _this.getToolbarDom();
 
         if(_this.menubar) {
-            var menubarTips = _this.menubarTips,
+            const menubarTips = _this.menubarTips,
                 mtbar = menubarTips.toolbar,
                 group = menubarTips.group,
                 freedom = menubarTips.freedom;
             if(mtbar && mtbar.length > 0){
                 // 菜单栏吸附工具栏上
-                for(var i=0; i<mtbar.length; i++){
-                    var mt = mtbar[i];
+                for(i = 0; i<mtbar.length; i++){
+                    const mt = mtbar[i];
                     if(typeof mt === 'string'){
                         _this.getMenubarToolDom(mt);
                     }
@@ -3563,8 +3586,8 @@ layui.define(['jquery','layer','form'], function(exports) {
             }
             if(group && group.length > 0){
                 // 菜单栏吸附在上方的按钮组div中
-                for(var i=0; i<group.length; i++){
-                    var gg = group[i];
+                for(i = 0; i<group.length; i++){
+                    const gg = group[i];
                     if(typeof gg === 'string'){
                         ggMenu.push(_this.getMenubarDom(gg));
                     }
@@ -3585,9 +3608,9 @@ layui.define(['jquery','layer','form'], function(exports) {
      * @Param: menu: 菜单栏的具体操作字符串
      */
     DTree.prototype.getMenubarDom = function(menu){
-        var _this = this;
-        var rootId = _this.obj[0].id;
-        var gg = "";
+        const _this = this;
+        const rootId = _this.obj[0].id;
+        let gg = "";
         switch (menu) {
             case defaultMenu.moveDown:
                 gg = "<button type='button' class='layui-btn layui-btn-sm layui-btn-primary' dtree-id='"+rootId+"' d-menu='"+defaultMenu.moveDown+"' title='展开全部节点'><i class='"+_this.usefontStyle.menubar.movedown+"'></i></button>";
@@ -3599,13 +3622,13 @@ layui.define(['jquery','layer','form'], function(exports) {
                 gg = "<button type='button' class='layui-btn layui-btn-sm layui-btn-primary' dtree-id='"+rootId+"' d-menu='"+defaultMenu.refresh+"' title='刷新'><i class='"+_this.usefontStyle.menubar.refresh+"'></i></button>";
                 break;
             case defaultMenu.checkAll:
-                gg = (_this.checkbar && _this.checkbarType != 'only') ? "<button type='button' class='layui-btn layui-btn-sm layui-btn-primary' dtree-id='"+rootId+"' d-menu='"+defaultMenu.checkAll+"' title='全选节点'><i class='"+_this.usefontStyle.menubar.checkAll+"'></i></button>" : "";
+                gg = (_this.checkbar && _this.checkbarType !== 'only') ? "<button type='button' class='layui-btn layui-btn-sm layui-btn-primary' dtree-id='"+rootId+"' d-menu='"+defaultMenu.checkAll+"' title='全选节点'><i class='"+_this.usefontStyle.menubar.checkAll+"'></i></button>" : "";
                 break;
             case defaultMenu.unCheckAll:
-                gg = (_this.checkbar && _this.checkbarType != 'only') ? "<button type='button' class='layui-btn layui-btn-sm layui-btn-primary' dtree-id='"+rootId+"' d-menu='"+defaultMenu.unCheckAll+"' title='全不选节点'><i class='"+_this.usefontStyle.menubar.unCheckAll+"'></i></button>" : "";
+                gg = (_this.checkbar && _this.checkbarType !== 'only') ? "<button type='button' class='layui-btn layui-btn-sm layui-btn-primary' dtree-id='"+rootId+"' d-menu='"+defaultMenu.unCheckAll+"' title='全不选节点'><i class='"+_this.usefontStyle.menubar.unCheckAll+"'></i></button>" : "";
                 break;
             case defaultMenu.invertAll:
-                gg = (_this.checkbar && _this.checkbarType != 'only') ? "<button type='button' class='layui-btn layui-btn-sm layui-btn-primary' dtree-id='"+rootId+"' d-menu='"+defaultMenu.invertAll+"' title='反选节点'><i class='"+_this.usefontStyle.menubar.invertAll+"'></i></button>" : "";
+                gg = (_this.checkbar && _this.checkbarType !== 'only') ? "<button type='button' class='layui-btn layui-btn-sm layui-btn-primary' dtree-id='"+rootId+"' d-menu='"+defaultMenu.invertAll+"' title='反选节点'><i class='"+_this.usefontStyle.menubar.invertAll+"'></i></button>" : "";
                 break;
             case defaultMenu.remove:
                 gg = (_this.checkbar) ? "<button type='button' class='layui-btn layui-btn-sm layui-btn-primary' dtree-id='"+rootId+"' d-menu='"+defaultMenu.remove+"' title='删除选中节点'><i class='"+_this.usefontStyle.menubar.remove+"'></i></button>" : "";
@@ -3622,7 +3645,7 @@ layui.define(['jquery','layer','form'], function(exports) {
      * @Param: menu: 扩展菜单栏的Json对象
      */
     DTree.prototype.getExtMenubarDom = function(menu){
-        var _this = this;
+        const _this = this;
         return "<button type='button' class='layui-btn layui-btn-sm layui-btn-primary' dtree-id='"+_this.obj[0].id+"' d-menu='"+menu.menubarId+"' title='"+menu.title+"'><i class='"+_this.usefontStyle.menubarExt+" "+menu.icon+"'></i></button>";
     };
 
@@ -3631,8 +3654,8 @@ layui.define(['jquery','layer','form'], function(exports) {
      * @Param: menu: 菜单栏的具体操作字符串
      */
     DTree.prototype.getMenubarToolDom = function(menu){
-        var _this = this;
-        var rootId = _this.obj[0].id;
+        const _this = this;
+        const rootId = _this.obj[0].id;
         switch (menu) {
             case defaultMenu.moveDown:
                 _this.toolbarMenu[defaultMenu.moveDown] = _this.setToolbarDom().setMenuToolbarOption(defaultMenu.moveDown, _this.toolbarStyle.title, _this.usefontStyle.toolbar.menubar.movedown, "展开全部");
@@ -3644,15 +3667,15 @@ layui.define(['jquery','layer','form'], function(exports) {
                 _this.toolbarMenu[defaultMenu.refresh] = _this.setToolbarDom().setMenuToolbarOption(defaultMenu.refresh, _this.toolbarStyle.title, _this.usefontStyle.toolbar.menubar.refresh, "刷新");
                 break;
             case defaultMenu.checkAll:
-                if(_this.checkbar && _this.checkbarType != 'only')
+                if(_this.checkbar && _this.checkbarType !== 'only')
                     _this.toolbarMenu[defaultMenu.checkAll] = _this.setToolbarDom().setMenuToolbarOption(defaultMenu.checkAll, _this.toolbarStyle.title, _this.usefontStyle.toolbar.menubar.checkAll, "全选节点");
                 break;
             case defaultMenu.unCheckAll:
-                if(_this.checkbar && _this.checkbarType != 'only')
+                if(_this.checkbar && _this.checkbarType !== 'only')
                     _this.toolbarMenu[defaultMenu.unCheckAll] = _this.setToolbarDom().setMenuToolbarOption(defaultMenu.unCheckAll, _this.toolbarStyle.title, _this.usefontStyle.toolbar.menubar.unCheckAll, "全不选节点");
                 break;
             case defaultMenu.invertAll:
-                if(_this.checkbar && _this.checkbarType != 'only')
+                if(_this.checkbar && _this.checkbarType !== 'only')
                     _this.toolbarMenu[defaultMenu.invertAll] = _this.setToolbarDom().setMenuToolbarOption(defaultMenu.invertAll, _this.toolbarStyle.title, _this.usefontStyle.toolbar.menubar.invertAll, "反选节点");
                 break;
             case defaultMenu.remove:
@@ -3670,7 +3693,7 @@ layui.define(['jquery','layer','form'], function(exports) {
      * @Param: menu: 扩展菜单栏的Json对象
      */
     DTree.prototype.getExtMenubarToolDom = function(menu){
-        var _this = this;
+        const _this = this;
         _this.toolbarMenu[menu.menubarId] = _this.setToolbarDom().setMenuToolbarOption(menu.menubarId, menu.title, _this.usefontStyle.toolbar.menubarExt+" "+menu.icon, "");
     };
 
@@ -3678,14 +3701,14 @@ layui.define(['jquery','layer','form'], function(exports) {
      * @Desc: menubar内置方法
      */
     DTree.prototype.menubarMethod = function(){
-        var _this = this;
+        const _this = this;
         return {
             openAllNode: function(obj){  // 展开所有节点
-                var $ulNode = obj || _this.obj.children("li").children("ul");
+                const $ulNode = obj || _this.obj.children("li").children("ul");
                 // 遍历所有ul子节点
-                for (var i = 0; i < $ulNode.length; i++) {
+                for (let i = 0; i < $ulNode.length; i++) {
                     // 获取当前节点的信息
-                    var $ul = $($ulNode[i]),
+                    const $ul = $($ulNode[i]),
                         $div = $ul.prev("div"),
                         $i_fnode = _this.getNodeDom($div).fnode(),
                         $i_snode = _this.getNodeDom($div).snode(),
@@ -3693,14 +3716,14 @@ layui.define(['jquery','layer','form'], function(exports) {
                         spread = $i_fnode.attr("data-spread"),
                         leaf = $cite.attr("data-leaf");
 
-                    if (leaf == "leaf") {
+                    if (leaf === "leaf") {
                         continue;
                     }	// 说明是叶子了，则继续循环下一个
 
-                    if (spread == "open") {
+                    if (spread === "open") {
                         // 说明该节点已经展开了，则进行子节点循环
                     } else {
-                        if (_this.type=="load") {	//是否全量加载
+                        if (_this.type==="load") {	//是否全量加载
                             if (_this.cache) {	//是否开启缓存
                                 if ($ul.html()) {
                                     $ul.addClass(NAV_SHOW);
@@ -3760,7 +3783,7 @@ layui.define(['jquery','layer','form'], function(exports) {
                     title: '查询节点'
                 }, function(value, index1, elem){
                     if (value) {
-                        var flag = _this.searchNode(value);
+                        const flag = _this.searchNode(value);
                         if (!flag) {
                             layer.msg("该名称节点不存在！", {icon:5});
                         }
@@ -3771,28 +3794,30 @@ layui.define(['jquery','layer','form'], function(exports) {
                 });
             },
             extMethod: function(menuId, $div, flag){
-                if(_this.menubar && _this.menubarTips.group && _this.menubarTips.group.length > 0 && flag == "group"){
-                    for(var i=0; i<_this.menubarTips.group.length; i++){
-                        var ext = _this.menubarTips.group[i];
-                        if (menuId == ext.menubarId){
+                let ext;
+                let i;
+                if(_this.menubar && _this.menubarTips.group && _this.menubarTips.group.length > 0 && flag === "group"){
+                    for(i = 0; i<_this.menubarTips.group.length; i++){
+                        ext = _this.menubarTips.group[i];
+                        if (menuId === ext.menubarId){
                             ext.handler(_this.getRequestParam(_this.getNodeParam($div), $div));
                             break;
                         }
                     }
                 }
-                if(_this.menubar && _this.menubarTips.toolbar && _this.menubarTips.toolbar.length > 0 && flag == "toolbar"){
-                    for(var i=0; i<_this.menubarTips.toolbar.length; i++){
-                        var ext = _this.menubarTips.toolbar[i];
-                        if (menuId == ext.menubarId){
+                if(_this.menubar && _this.menubarTips.toolbar && _this.menubarTips.toolbar.length > 0 && flag === "toolbar"){
+                    for(i = 0; i<_this.menubarTips.toolbar.length; i++){
+                        ext = _this.menubarTips.toolbar[i];
+                        if (menuId === ext.menubarId){
                             ext.handler(_this.getRequestParam(_this.getNodeParam($div), $div));
                             break;
                         }
                     }
                 }
-                if(_this.menubar && _this.menubarTips.freedom && _this.menubarTips.freedom.length > 0 && flag == "freedom"){
-                    for(var i=0; i<_this.menubarTips.freedom.length; i++){
-                        var ext = _this.menubarTips.freedom[i];
-                        if (menuId == ext.menubarId){
+                if(_this.menubar && _this.menubarTips.freedom && _this.menubarTips.freedom.length > 0 && flag === "freedom"){
+                    for(i = 0; i<_this.menubarTips.freedom.length; i++){
+                        ext = _this.menubarTips.freedom[i];
+                        if (menuId === ext.menubarId){
                             ext.handler(_this.getRequestParam(_this.getNodeParam($div), $div));
                             break;
                         }
@@ -3808,8 +3833,8 @@ layui.define(['jquery','layer','form'], function(exports) {
      * @Param: flag：菜单栏的显示方式
      */
     DTree.prototype.menubarListener = function(menuId, flag){
-        var _this = this;
-        var $div = _this.getNodeDom().nowDiv();
+        const _this = this;
+        const $div = _this.getNodeDom().nowDiv();
         switch (menuId) {
             case defaultMenu.moveDown:	// 展开全部节点
                 _this.menubarMethod().openAllNode();
@@ -3846,16 +3871,16 @@ layui.define(['jquery','layer','form'], function(exports) {
      * @Param: value： 模糊查询的值
      */
     DTree.prototype.searchNode = function(value){
-        var _this = this;
-        var b = false;
-        var $lis = [];
+        const _this = this;
+        let b = false;
+        const $lis = [];
         _this.obj.find("cite[data-leaf]").each(function(){
-            var $nthis = $(this);
-            var html = $nthis.html();
+            const $nthis = $(this);
+            const html = $nthis.html();
             if(html.indexOf(value) > -1){
-                if($nthis.attr("data-leaf") == "leaf") {
+                if($nthis.attr("data-leaf") === "leaf") {
                     // 叶子节点提供包含父节点的所有信息
-                    var title = "";
+                    let title = "";
                     $nthis.parents("li").each(function(){
                         title = "-" + $(this).find("cite[data-leaf]").html() + title;
                     });
@@ -3863,9 +3888,9 @@ layui.define(['jquery','layer','form'], function(exports) {
                     $nthis.attr("title", title);
                 }
                 // 保存当前cite所在的li及父li中包含该值，则只保留父的
-                var i = 0;
+                let i = 0;
                 $nthis.parents("li").each(function(){
-                    var html2 = $(this).find("cite[data-leaf]").html();
+                    const html2 = $(this).find("cite[data-leaf]").html();
                     if(html2.indexOf(value) > -1){
                         i++;
                     }
@@ -3883,7 +3908,7 @@ layui.define(['jquery','layer','form'], function(exports) {
             // 1.将树节点清空
             _this.obj.html("");
             // 2.遍历所有cite节点，展开当前cite节点
-            for(var i=0; i<$lis.length; i++){
+            for(let i=0; i<$lis.length; i++){
                 _this.obj.append($lis[i]);
             }
         }
@@ -3896,34 +3921,35 @@ layui.define(['jquery','layer','form'], function(exports) {
      * @Desc: 获取工具栏
      */
     DTree.prototype.getToolbarDom = function(){
-        var _this = this;
-        var toolbarShow = _this.toolbarShow,
+        let i;
+        const _this = this;
+        const toolbarShow = _this.toolbarShow,
             toolbarExt = _this.toolbarExt,
             toolbarWay = _this.toolbarWay;
 
         if(toolbarShow.length > 0){
-            for(var i=0; i<toolbarShow.length; i++){
-                var show = toolbarShow[i];
-                if(show == "pulldown"){
+            for(i = 0; i<toolbarShow.length; i++){
+                const show = toolbarShow[i];
+                if(show === "pulldown"){
                     _this.toolbarMenu[defaultTool.pulldown] = _this.setToolbarDom().setToolbarOption(defaultTool.pulldown, _this.toolbarStyle.title, _this.usefontStyle.toolbar.pulldown, "展开");
                 }
-                if(show == "pullup"){
+                if(show === "pullup"){
                     _this.toolbarMenu[defaultTool.pullup] = _this.setToolbarDom().setToolbarOption(defaultTool.pullup, _this.toolbarStyle.title, _this.usefontStyle.toolbar.pullup, "收缩");
                 }
-                if(show == "add"){
+                if(show === "add"){
                     _this.toolbarMenu[defaultTool.addTool] = _this.setToolbarDom().setToolbarOption(defaultTool.addTool, _this.toolbarStyle.title, _this.usefontStyle.toolbar.add, "新增");
                 }
-                if(show == "edit"){
+                if(show === "edit"){
                     _this.toolbarMenu[defaultTool.editTool] = _this.setToolbarDom().setToolbarOption(defaultTool.editTool, _this.toolbarStyle.title, _this.usefontStyle.toolbar.edit, "编辑");
                 }
-                if(show == "delete"){
+                if(show === "delete"){
                     _this.toolbarMenu[defaultTool.delTool] = _this.setToolbarDom().setToolbarOption(defaultTool.delTool, _this.toolbarStyle.title, _this.usefontStyle.toolbar.del, "删除");
                 }
             }
         }
         if(toolbarExt.length > 0){
-            for(var i=0; i<toolbarExt.length; i++){
-                var ext = toolbarExt[i];
+            for(i = 0; i<toolbarExt.length; i++){
+                const ext = toolbarExt[i];
                 _this.toolbarMenu[ext.toolbarId] = _this.setToolbarDom().setToolbarOption(ext.toolbarId, ext.title, _this.usefontStyle.toolbarExt+" "+ext.icon, "");
             }
         }
@@ -3933,36 +3959,36 @@ layui.define(['jquery','layer','form'], function(exports) {
      * @Desc: 设置工具栏按钮
      */
     DTree.prototype.setToolbarDom = function(){
-        var _this = this;
-        var toolbarWay = _this.toolbarWay;
+        const _this = this;
+        const toolbarWay = _this.toolbarWay;
 
         return {
             setToolbarOption: function(toolbarId, title, classId, other){
-                if(toolbarWay == "contextmenu") {
+                if(toolbarWay === "contextmenu") {
                     return "<dd><a dtree-tool='"+toolbarId+"'><i class='"+classId+"'></i>&nbsp;"+other +title+"</a></dd>";
-                } else if(toolbarWay == "fixed" || toolbarWay == "follow") {
+                } else if(toolbarWay === "fixed" || toolbarWay === "follow") {
                     return "<a dtree-tool='"+toolbarId+"' title='"+other + title+"'><i class='"+classId+"'></i></a>";
                 }
             },
             setMenuToolbarOption: function(menubarId, title, classId, other){
-                var rootId = _this.obj[0].id;
-                if(toolbarWay == "contextmenu") {
+                const rootId = _this.obj[0].id;
+                if(toolbarWay === "contextmenu") {
                     return "<dd><a dtree-id='"+rootId+"' d-menu='"+menubarId+"'><i class='"+classId+"'></i>&nbsp;"+other +title+"</a></dd>";
-                } else if(toolbarWay == "fixed" || toolbarWay == "follow") {
+                } else if(toolbarWay === "fixed" || toolbarWay === "follow") {
                     return "<a dtree-id='"+rootId+"' d-menu='"+menubarId+"' title='"+other + title+"'><i class='"+classId+"'></i></a>";
                 }
             },
             setToolbarPlace: function(toolbarMenu){
-                if(toolbarWay == "contextmenu") {
+                if(toolbarWay === "contextmenu") {
                     if(toolbarMenu){
                         _this.obj.prevAll('div#dtree_toolbar_'+_this.obj[0].id).find('div.layui-nav-item>dl.layui-nav-child').html("");
-                        for(var key in toolbarMenu){
+                        for(const key in toolbarMenu){
                             _this.obj.prevAll('div#dtree_toolbar_'+_this.obj[0].id).find('div.layui-nav-item>dl.layui-nav-child').append(toolbarMenu[key]);
                         }
                     }
-                } else if(toolbarWay == "fixed" || toolbarWay == "follow") {
+                } else if(toolbarWay === "fixed" || toolbarWay === "follow") {
                     _this.obj.find("cite[data-leaf][dtree-disabled='false']").each(function(){
-                        var $cite = $(this);
+                        const $cite = $(this);
                         _this.dynamicToolbarDom($cite);
                     });
                 }
@@ -3975,14 +4001,14 @@ layui.define(['jquery','layer','form'], function(exports) {
      * @Param: $cite： JQuery对象，表示当前文本节点
      */
     DTree.prototype.dynamicToolbarDom = function($cite){
-        var _this = this;
-        var toolbarWay = _this.toolbarWay;
-        if($cite.next("em."+TOOLBAR_TOOL_EM).length == 0) {
-            var $div = $cite.parent("div");
-            var param = _this.getRequestParam(_this.getTempNodeParam($div));
-            var toolbarMenus = _this.toolbarFun.loadToolbarBefore(event.cloneObj(_this.toolbarMenu), param, $div);
-            var hideCls = (toolbarWay == "follow") ? NAV_HIDE : "";
-            var em = ["<em class='"+TOOLBAR_TOOL_EM+" "+hideCls+"'>"];
+        const _this = this;
+        const toolbarWay = _this.toolbarWay;
+        if($cite.next("em."+TOOLBAR_TOOL_EM).length === 0) {
+            const $div = $cite.parent("div");
+            const param = _this.getRequestParam(_this.getTempNodeParam($div));
+            const toolbarMenus = _this.toolbarFun.loadToolbarBefore(event.cloneObj(_this.toolbarMenu), param, $div);
+            const hideCls = (toolbarWay === "follow") ? NAV_HIDE : "";
+            const em = ["<em class='" + TOOLBAR_TOOL_EM + " " + hideCls + "'>"];
             if(toolbarMenus){
                 for(var key in toolbarMenus){
                     em.push(toolbarMenus[key]);
@@ -3997,9 +4023,9 @@ layui.define(['jquery','layer','form'], function(exports) {
      * @Desc: 隐藏toolbar
      */
     DTree.prototype.toolbarHide = function() {
-        var _this = this;
-        if(_this.toolbar && _this.toolbarWay == "contextmenu") {
-            var $toolBarDiv = _this.obj.prevAll('div#dtree_toolbar_'+_this.obj[0].id);
+        const _this = this;
+        if(_this.toolbar && _this.toolbarWay === "contextmenu") {
+            const $toolBarDiv = _this.obj.prevAll('div#dtree_toolbar_' + _this.obj[0].id);
             $toolBarDiv.find(".layui-nav-child").removeClass('layui-anim-fadein layui-show');
         }
     }
@@ -4008,15 +4034,15 @@ layui.define(['jquery','layer','form'], function(exports) {
      * @Desc: toolbar内置方法
      */
     DTree.prototype.toolbarMethod = function(){
-        var _this = this;
+        const _this = this;
         return {
             pulldown: function(obj){ // 展开当前点击节点的下面全部节点
                 if(!obj) return;
-                var $ulNode = obj;
+                const $ulNode = obj;
                 // 遍历所有ul子节点
-                for (var i = 0; i < $ulNode.length; i++) {
+                for (let i = 0; i < $ulNode.length; i++) {
                     // 获取当前节点的信息
-                    var $ul = $($ulNode[i]),
+                    const $ul = $($ulNode[i]),
                         $div = $ul.prev("div"),
                         $i_fnode = _this.getNodeDom($div).fnode(),
                         $i_snode = _this.getNodeDom($div).snode(),
@@ -4024,12 +4050,12 @@ layui.define(['jquery','layer','form'], function(exports) {
                         spread = $i_fnode.attr("data-spread"),
                         leaf = $cite.attr("data-leaf");
 
-                    if (leaf == "leaf") { continue;	}	// 说明是叶子了，则继续循环下一个
+                    if (leaf === "leaf") { continue;	}	// 说明是叶子了，则继续循环下一个
 
-                    if (spread == "open") {
+                    if (spread === "open") {
                         // 说明该节点已经展开了，则进行子节点循环
                     } else {
-                        if (_this.type=="load") {	//是否全量加载
+                        if (_this.type==="load") {	//是否全量加载
                             if (_this.cache) {	//是否开启缓存
                                 if ($ul.html()) {
                                     $ul.addClass(NAV_SHOW);
@@ -4046,14 +4072,14 @@ layui.define(['jquery','layer','form'], function(exports) {
                         _this.operateIcon($i_fnode, $i_snode).open();
 
                     }
-                    var $childUl = $ul.children("li").children("ul");
+                    const $childUl = $ul.children("li").children("ul");
                     _this.toolbarMethod().pulldown($childUl);
                 }
             },
             pullup: function($li){ // 收缩当前点击节点的下面全部节点
                 $li.find("."+LI_NAV_CHILD).each(function(){
                     // 获取当前节点的信息
-                    var $ul = $(this),
+                    const $ul = $(this),
                         $div = $ul.prev("div"),
                         $i_fnode = _this.getNodeDom($div).fnode(),
                         $i_snode = _this.getNodeDom($div).snode(),
@@ -4076,14 +4102,14 @@ layui.define(['jquery','layer','form'], function(exports) {
      * @Param: $div: JQuery对象，表示当前操作节点
      */
     DTree.prototype.toolbarListener = function(tool, $div) {
-        var _this = this;
-        var $cite = $div.children("cite[data-leaf]"),
+        const _this = this;
+        const $cite = $div.children("cite[data-leaf]"),
             $ul = $div.next("ul"),
             $p_li = $div.parent("li[data-index]"),	//当前选中节点的顶级li节点
             $p_ul = $p_li.parent("ul"),	//当前选中节点的顶级li节点的父级ul
             $p_div = $p_ul.prev("div"), //当前选中节点的顶级li节点的父级ul的前一个div
             title = (typeof _this.formatter.title === 'function') ? $cite.attr("data-title") : $cite.text();
-        
+
         switch (tool) {
             case defaultTool.pulldown:
                 _this.toolbarMethod().pulldown($ul);
@@ -4092,7 +4118,7 @@ layui.define(['jquery','layer','form'], function(exports) {
                 _this.toolbarMethod().pullup($p_li);
                 break;
             case defaultTool.addTool:
-                var content = _this.loadToolBar(title, defaultTool.addTool);
+                let content = _this.loadToolBar(title, defaultTool.addTool);
 
                 layer.open({
                     title: "新增"+_this.toolbarStyle.title,
@@ -4103,18 +4129,18 @@ layui.define(['jquery','layer','form'], function(exports) {
                         form.render();
                         form.on("submit(dtree_addNode_" + _this.obj[0].id + "_form)",function(data){
                             var data = data.field;
-                            var parentId = $div.attr("data-id"),
-                                id = $div.attr("data-id")+"_node_"+$ul[0].childNodes.length,
+                            let parentId = $div.attr("data-id"),
+                                id = $div.attr("data-id") + "_node_" + $ul[0].childNodes.length,
                                 leaf = true,
                                 checked = "0",
-                                level = parseInt($p_li.attr("data-index"))+1;
+                                level = parseInt($p_li.attr("data-index")) + 1;
 
-                            var type = _this.response.type;
-                            var checked = _this.response.checked;
+                            const type = _this.response.type;
+                            checked = _this.response.checked;
                             // 创建子节点的DOM，添加子节点
-                            var checkArr = [];
+                            const checkArr = [];
                             if (_this.checkArrLen > 0) {
-                                for (var i = 0; i < _this.checkArrLen; i++) {
+                                for (let i = 0; i < _this.checkArrLen; i++) {
                                     checkArr.push({type: i, checked: "0"});
                                 }
                             }
@@ -4123,11 +4149,11 @@ layui.define(['jquery','layer','form'], function(exports) {
                             // 先将li节点隐藏
                             $ul.find("li[data-id='"+id+"']").hide();
                             // 重新赋值
-                            var $addDiv = $ul.find("div[data-id='"+id+"']");
+                            const $addDiv = $ul.find("div[data-id='" + id + "']");
                             node = _this.getNodeParam($addDiv);
 
                             //获取组装后的requestNode,组合参数
-                            var requestNode = _this.getRequestParam(node);
+                            let requestNode = _this.getRequestParam(node);
                             requestNode = $.extend(requestNode, data);
 
                             _this.temp = [id, $ul, $div, level];
@@ -4141,7 +4167,7 @@ layui.define(['jquery','layer','form'], function(exports) {
                 });
                 break;
             case defaultTool.editTool:
-                var content = _this.loadToolBar(title, defaultTool.editTool);
+                content = _this.loadToolBar(title, defaultTool.editTool);
 
                 layer.open({
                     title: "编辑"+_this.toolbarStyle.title,
@@ -4155,7 +4181,7 @@ layui.define(['jquery','layer','form'], function(exports) {
                             var data = data.field;
                             $cite.html(data.editNodeName);
                             node = _this.getNodeParam($div);
-                            var requestNode = _this.getRequestParam(node);
+                            let requestNode = _this.getRequestParam(node);
                             requestNode = $.extend(requestNode, data);
                             _this.temp = [$cite, $div, title, $p_div];
                             _this.toolbarFun.editTreeNode(requestNode, $div);
@@ -4167,7 +4193,7 @@ layui.define(['jquery','layer','form'], function(exports) {
                 break;
             case defaultTool.delTool:
                 layer.confirm('确定要删除该'+_this.toolbarStyle.title+'？', {icon: 3, title:'删除'+_this.toolbarStyle.title}, function(index){
-                    var node = _this.getNodeParam($div);
+                    const node = _this.getNodeParam($div);
                     _this.temp = [$p_li, $p_div];
                     _this.toolbarFun.delTreeNode(_this.getRequestParam(_this.getNodeParam($div)), $div);
 
@@ -4176,9 +4202,9 @@ layui.define(['jquery','layer','form'], function(exports) {
                 break;
             default:
                 if(_this.toolbarExt.length > 0){
-                    for(var i=0; i<_this.toolbarExt.length; i++){
-                        var ext = _this.toolbarExt[i];
-                        if (tool == ext.toolbarId){
+                    for(let i=0; i<_this.toolbarExt.length; i++){
+                        const ext = _this.toolbarExt[i];
+                        if (tool === ext.toolbarId){
                             ext.handler(_this.getRequestParam(_this.getNodeParam($div)), $div);
                             break;
                         }
@@ -4195,31 +4221,53 @@ layui.define(['jquery','layer','form'], function(exports) {
      * @Param: name: 工具栏的具体操作字符串
      */
     DTree.prototype.loadToolBar = function(title, name){
-        var _this = this;
-        var toolbarShow = _this.toolbarShow;
-        var nodeBarContents = _this.toolbarBtn;
-
-        var html = "";
-        switch (name) {
+        let type;
+        let defElem;
+        let i;
+        const _this = this;
+        const toolbarShow = _this.toolbarShow;
+        const nodeBarContents = _this.toolbarBtn;
+
+        let html = "";
+        let j;switch (name) {
             case defaultTool.addTool:
-                var addNodeBarDef = [{"label": "当前选中", "name": "nodeTitle", "type": "text", "value": title, "defElem": "nowChoose", "readonly": true},
-                    {"label": "新增"+_this.toolbarStyle.title, "name": "addNodeName", "type": "text", "value": "", "defElem": "nowChange", "verify": "required"},
-                    {"type": "submit", "value": "确认添加", "defElem": "btn", "filter": "dtree_addNode_" + _this.obj[0].id + "_form"}];
+                const addNodeBarDef = [{
+                    "label": "当前选中",
+                    "name": "nodeTitle",
+                    "type": "text",
+                    "value": title,
+                    "defElem": "nowChoose",
+                    "readonly": true
+                },
+                    {
+                        "label": "新增" + _this.toolbarStyle.title,
+                        "name": "addNodeName",
+                        "type": "text",
+                        "value": "",
+                        "defElem": "nowChange",
+                        "verify": "required"
+                    },
+                    {
+                        "type": "submit",
+                        "value": "确认添加",
+                        "defElem": "btn",
+                        "filter": "dtree_addNode_" + _this.obj[0].id + "_form"
+                    }];
 
                 //2. 用户自定义的节点内容
-                var addNodeBar = ['<div class="'+TOOLBAR_TOOL+'"><form class="layui-form layui-form-pane" lay-filter="dtree_addNode_' + _this.obj[0].id + '_form">'];
+                const addNodeBar = ['<div class="' + TOOLBAR_TOOL + '"><form class="layui-form layui-form-pane" lay-filter="dtree_addNode_' + _this.obj[0].id + '_form">'];
 
                 if(nodeBarContents != null && nodeBarContents.length > 0){
-                    if(nodeBarContents[0] != null && nodeBarContents[0] != undefined && nodeBarContents[0].length > 0){
-                        var addNodeBarContents = nodeBarContents[0];
+                    if(nodeBarContents[0] != null && nodeBarContents[0] !== undefined && nodeBarContents[0].length > 0){
+                        const addNodeBarContents = nodeBarContents[0];
                         // 1. 检查是否包含了now、newly、btn这三个默认项,将其他元素依次排列，将特殊元素至于栈顶
-                        for(var i=0; i<addNodeBarContents.length; i++){
-                            var defElem = addNodeBarContents[i].defElem;
-                            if(defElem == "nowChoose") {
+                        for(i = 0; i<addNodeBarContents.length; i++){
+                            defElem = addNodeBarContents[i].defElem;
+                            if(defElem === "nowChoose") {
                                 $.extend(addNodeBarDef[0], addNodeBarContents[i]);
-                            } else if(defElem == "nowChange") {
+                            } else if(defElem === "nowChange") {
                                 $.extend(addNodeBarDef[1], addNodeBarContents[i]);
-                            } else if(defElem == "btn") {
+                            } else if(defElem === "btn") {
                                 $.extend(addNodeBarDef[2], addNodeBarContents[i]);
                             } else {
                                 addNodeBarDef.push(addNodeBarContents[i]);
@@ -4229,8 +4277,8 @@ layui.define(['jquery','layer','form'], function(exports) {
                 }
 
                 // 2. 遍历生成全部表单标签
-                for(var j=0; j<addNodeBarDef.length; j++){
-                    var type = addNodeBarDef[j].type;
+                for(j = 0; j<addNodeBarDef.length; j++){
+                    type = addNodeBarDef[j].type;
                     if(!type){type = "text";}
                     switch (type) {
                         case "text":
@@ -4249,10 +4297,10 @@ layui.define(['jquery','layer','form'], function(exports) {
                     }
                 }
 
-                var addBtn = ['<div class="layui-form-item">', '<div class="layui-input-block" style="margin-left:0px;text-align:center;">'];
+                const addBtn = ['<div class="layui-form-item">', '<div class="layui-input-block" style="margin-left:0px;text-align:center;">'];
                 // 3.遍历生成按钮
-                for(var j=0; j<addNodeBarDef.length; j++){
-                    var type = addNodeBarDef[j].type;
+                for(j = 0; j<addNodeBarDef.length; j++){
+                    type = addNodeBarDef[j].type;
                     if(!type){type = "text";}
                     switch (type) {
                         case "submit":
@@ -4274,24 +4322,43 @@ layui.define(['jquery','layer','form'], function(exports) {
                 break;
 
             case defaultTool.editTool:
-                var editNodeBarDef = [{"label": "当前选中", "name": "nodeTitle", "type": "text", "value": title, "defElem": "nowChoose", "readonly": true},
-                    {"label": "编辑"+_this.toolbarStyle.title, "name": "editNodeName", "type": "text", "value": "", "defElem": "nowChange", "verify": "required"},
-                    {"type": "submit", "value": "确认编辑", "defElem": "btn", "filter": "dtree_editNode_" + _this.obj[0].id + "_form"}];
-
-                var editNodeBar = ['<div class="'+TOOLBAR_TOOL+'"><form class="layui-form layui-form-pane" lay-filter="dtree_editNode_' + _this.obj[0].id + '_form">'];
+                const editNodeBarDef = [{
+                    "label": "当前选中",
+                    "name": "nodeTitle",
+                    "type": "text",
+                    "value": title,
+                    "defElem": "nowChoose",
+                    "readonly": true
+                },
+                    {
+                        "label": "编辑" + _this.toolbarStyle.title,
+                        "name": "editNodeName",
+                        "type": "text",
+                        "value": "",
+                        "defElem": "nowChange",
+                        "verify": "required"
+                    },
+                    {
+                        "type": "submit",
+                        "value": "确认编辑",
+                        "defElem": "btn",
+                        "filter": "dtree_editNode_" + _this.obj[0].id + "_form"
+                    }];
+
+                const editNodeBar = ['<div class="' + TOOLBAR_TOOL + '"><form class="layui-form layui-form-pane" lay-filter="dtree_editNode_' + _this.obj[0].id + '_form">'];
                 //2. 用户自定义的节点内容
                 if(nodeBarContents != null && nodeBarContents.length > 0){
 
-                    if(nodeBarContents[1] != null && nodeBarContents[1] != undefined && nodeBarContents[1].length > 0){
-                        var editNodeBarContents = nodeBarContents[1];
+                    if(nodeBarContents[1] != null && nodeBarContents[1] !== undefined && nodeBarContents[1].length > 0){
+                        const editNodeBarContents = nodeBarContents[1];
                         // 1. 检查是否包含了now、newly、btn这三个默认项,将其他元素依次排列，将特殊元素至于栈顶
-                        for(var i=0; i<editNodeBarContents.length; i++){
-                            var defElem = editNodeBarContents[i].defElem;
-                            if(defElem == "nowChoose") {
+                        for(i = 0; i<editNodeBarContents.length; i++){
+                            defElem = editNodeBarContents[i].defElem;
+                            if(defElem === "nowChoose") {
                                 $.extend(editNodeBarDef[0], editNodeBarContents[i]);
-                            } else if(defElem == "nowChange") {
+                            } else if(defElem === "nowChange") {
                                 $.extend(editNodeBarDef[1], editNodeBarContents[i]);
-                            } else if(defElem == "btn") {
+                            } else if(defElem === "btn") {
                                 $.extend(editNodeBarDef[2], editNodeBarContents[i]);
                             } else {
                                 editNodeBarDef.push(editNodeBarContents[i]);
@@ -4301,8 +4368,8 @@ layui.define(['jquery','layer','form'], function(exports) {
                     }
                 }
                 // 2. 遍历生成全部表单标签
-                for(var j=0; j<editNodeBarDef.length; j++){
-                    var type = editNodeBarDef[j].type;
+                for(j = 0; j<editNodeBarDef.length; j++){
+                    type = editNodeBarDef[j].type;
                     if(!type){type = "text";}
                     switch (type) {
                         case "text":
@@ -4320,10 +4387,10 @@ layui.define(['jquery','layer','form'], function(exports) {
                     }
                 }
 
-                var editBtn = ['<div class="layui-form-item">', '<div class="layui-input-block" style="margin-left:0px;text-align:center;">'];
+                const editBtn = ['<div class="layui-form-item">', '<div class="layui-input-block" style="margin-left:0px;text-align:center;">'];
                 // 3.遍历生成按钮
-                for(var j=0; j<editNodeBarDef.length; j++){
-                    var type = editNodeBarDef[j].type;
+                for(j = 0; j<editNodeBarDef.length; j++){
+                    type = editNodeBarDef[j].type;
                     if(!type){type = "text";}
                     switch (type) {
                         case "submit":
@@ -4352,22 +4419,22 @@ layui.define(['jquery','layer','form'], function(exports) {
      * @Param: nodeBarContents: 工具栏中的数据渲染内容JSON对象
      */
     DTree.prototype.loadToolBarDetail = function(nodeBarContents){
-        var _this = this;
-        var readonly = (typeof (nodeBarContents.readonly) === "boolean") ? nodeBarContents.readonly : false;
-        var disabled = (typeof (nodeBarContents.disabled) === "boolean") ? nodeBarContents.disabled : false;
-        var id = nodeBarContents.id ? nodeBarContents.id : "";
-        var name = nodeBarContents.name ? nodeBarContents.name : "";
-        var val = nodeBarContents.value ? nodeBarContents.value : "";
-        var verify = nodeBarContents.verify ? nodeBarContents.verify : "";
-        var placeholder = nodeBarContents.placeholder ? nodeBarContents.placeholder : val;
+        const _this = this;
+        const readonly = (typeof (nodeBarContents.readonly) === "boolean") ? nodeBarContents.readonly : false;
+        const disabled = (typeof (nodeBarContents.disabled) === "boolean") ? nodeBarContents.disabled : false;
+        const id = nodeBarContents.id ? nodeBarContents.id : "";
+        const name = nodeBarContents.name ? nodeBarContents.name : "";
+        const val = nodeBarContents.value ? nodeBarContents.value : "";
+        const verify = nodeBarContents.verify ? nodeBarContents.verify : "";
+        const placeholder = nodeBarContents.placeholder ? nodeBarContents.placeholder : val;
         return{
             text: function(){
                 return ['<div class="layui-form-item">',
                     '<label class="layui-form-label" title="'+nodeBarContents.label+'">'+nodeBarContents.label+'：</label>',
                     '<div class="layui-input-block f-input-par">',
                     '<input type="text" class="layui-input f-input" value="'+val+'" placeholder="'+placeholder+'" lay-verify="'+verify+'" ',
-                    (id != "" ? 'id="'+id+'" ' : ''),
-                    (name != "" ? 'name="'+name+'" ' : ''),
+                    (id !== "" ? 'id="'+id+'" ' : ''),
+                    (name !== "" ? 'name="'+name+'" ' : ''),
                     (readonly ? 'readonly ' : ''),
                     (disabled ? 'disabled ' : ''),
                     '/>',
@@ -4379,8 +4446,8 @@ layui.define(['jquery','layer','form'], function(exports) {
                     '<label class="layui-form-label" title="'+nodeBarContents.label+'">'+nodeBarContents.label+'：</label>',
                     '<div class="layui-input-block f-input-par">',
                     '<textarea class="layui-textarea f-input" value="'+val+'" placeholder="'+placeholder+'" lay-verify="'+verify+'" ',
-                    (id != "" ? 'id="'+id+'" ' : ''),
-                    (name != "" ? 'name="'+name+'" ' : ''),
+                    (id !== "" ? 'id="'+id+'" ' : ''),
+                    (name !== "" ? 'name="'+name+'" ' : ''),
                     (readonly ? 'readonly ' : ''),
                     (disabled ? 'disabled ' : ''),
                     '>'+val+'</textarea>',
@@ -4389,17 +4456,17 @@ layui.define(['jquery','layer','form'], function(exports) {
             },
             hidden: function(){
                 return ['<input type="hidden" class="layui-input f-input" value="'+val+'" lay-verify="'+verify+'" ',
-                    (id != "" ? 'id="'+id+'" ' : ''),
-                    (name != "" ? 'name="'+name+'" ' : ''),
+                    (id !== "" ? 'id="'+id+'" ' : ''),
+                    (name !== "" ? 'name="'+name+'" ' : ''),
                     (readonly ? 'readonly ' : ''),
                     (disabled ? 'disabled ' : ''),
                     '/>'].join('');
             },
             select: function(){
-                var optionsData = (typeof nodeBarContents.optionsData === 'object') ? nodeBarContents.optionsData : nodeBarContents.optionsData();
-                var options = "";
-                for(var key in optionsData){
-                    if(val == optionsData[key]){
+                const optionsData = (typeof nodeBarContents.optionsData === 'object') ? nodeBarContents.optionsData : nodeBarContents.optionsData();
+                let options = "";
+                for(const key in optionsData){
+                    if(val === optionsData[key]){
                         options += "<option value='"+key+"' selected>"+optionsData[key]+"</option>";
                     } else {
                         options += "<option value='"+key+"'>"+optionsData[key]+"</option>";
@@ -4409,8 +4476,8 @@ layui.define(['jquery','layer','form'], function(exports) {
                     '<label class="layui-form-label" title="'+nodeBarContents.label+'">'+nodeBarContents.label+'：</label>',
                     '<div class="layui-input-block f-input-par">',
                     '<select lay-verify="'+verify+'" ',
-                    (id != "" ? 'id="'+id+'" ' : ''),
-                    (name != "" ? 'name="'+name+'" ' : ''),
+                    (id !== "" ? 'id="'+id+'" ' : ''),
+                    (name !== "" ? 'name="'+name+'" ' : ''),
                     (readonly ? 'readonly ' : ''),
                     (disabled ? 'disabled ' : ''),
                     '>',
@@ -4418,22 +4485,22 @@ layui.define(['jquery','layer','form'], function(exports) {
                     '</select>', '</div>', '</div>'].join('');
             },
             submit: function(){
-                var filter = nodeBarContents.filter;
+                const filter = nodeBarContents.filter;
                 return ['<button type="button" class="layui-btn layui-btn-normal btn-w100" lay-submit lay-filter="'+filter+'" ',
-                    (id != "" ? 'id="'+id+'" ' : ''),
-                    (name != "" ? 'name="'+name+'" ' : ''),
+                    (id !== "" ? 'id="'+id+'" ' : ''),
+                    (name !== "" ? 'name="'+name+'" ' : ''),
                     '>'+val+'</button>'].join('');
             },
             button: function(){
                 return ['<button type="button" class="layui-btn layui-btn-normal btn-w100" ',
-                    (id != "" ? 'id="'+id+'" ' : ''),
-                    (name != "" ? 'name="'+name+'" ' : ''),
+                    (id !== "" ? 'id="'+id+'" ' : ''),
+                    (name !== "" ? 'name="'+name+'" ' : ''),
                     ' >'+val+'</button>'].join('');
             },
             reset: function(){
                 return ['<button type="reset" class="layui-btn layui-btn-primary btn-w100" ',
-                    (id != "" ? 'id="'+id+'" ' : ''),
-                    (name != "" ? 'name="'+name+'" ' : ''),
+                    (id !== "" ? 'id="'+id+'" ' : ''),
+                    (name !== "" ? 'name="'+name+'" ' : ''),
                     '>'+val+'</button>'].join('');
             }
         }
@@ -4444,16 +4511,16 @@ layui.define(['jquery','layer','form'], function(exports) {
      * @Param: returnID: 当前需要加载的内容，JSON对象、字符串、指定字符串（"refresh"）、true
      */
     DTree.prototype.changeTreeNodeAdd = function(returnID){
-        var _this = this;
-        var temp = _this.temp;
-        var id = temp[0], $ul = temp[1], $div = temp[2], level = temp[3];
-        var flag = false;
+        const _this = this;
+        const temp = _this.temp;
+        const id = temp[0], $ul = temp[1], $div = temp[2], level = temp[3];
+        let flag = false;
         if(returnID){
-            var $thisDiv = _this.obj.find("[data-id='"+id+"']");
+            let $thisDiv = _this.obj.find("[data-id='" + id + "']");
             if(typeof returnID === "object"){
                 // 如果是JSON格式数据，则将当前DIV删除，重新建造DIV
                 $thisDiv.remove();
-                var parseData = _this.parseData(returnID);
+                const parseData = _this.parseData(returnID);
 
                 if(parseData.treeId()){
                     $ul.append(_this.getLiItemDom(parseData.treeId(), parseData.parentId(), parseData.title(), parseData.fmtTitle(), parseData.last(0), parseData.ficonClass(), parseData.iconClass(), parseData.checkArr(), level, parseData.spread(), parseData.disabled(), parseData.hide(), parseData.basicData(), parseData.recordData(), "item"));
@@ -4471,7 +4538,7 @@ layui.define(['jquery','layer','form'], function(exports) {
                     _this.temp = [];
                     return ;
                 }
-            }else if(returnID == 'refresh' || returnID == true){
+            }else if(returnID === 'refresh' || returnID === true){
                 // 如果是设置为refresh参数，则向后台发送请求，获取新增节点下的真实参数，局部刷新树。
                 flag = true;
             } else if(typeof returnID === "string" || typeof returnID === 'number'){
@@ -4483,7 +4550,7 @@ layui.define(['jquery','layer','form'], function(exports) {
 
             // 判断当前点击的节点是否是最后一级节点，如果是，则需要修改节点的样式
             var $icon_i = $div.find("i[data-spread]");
-            if ($icon_i.eq(0).attr("data-spread") == "last") {
+            if ($icon_i.eq(0).attr("data-spread") === "last") {
                 _this.operateIcon($icon_i.eq(0), $icon_i.eq(1)).openWithLeaf();
             } else {	//如果不是，也要修改节点样式
                 _this.operateIcon($icon_i.eq(0), $icon_i.eq(1)).open();
@@ -4496,7 +4563,7 @@ layui.define(['jquery','layer','form'], function(exports) {
                 //		_this.showLine();
                 _this.showLine($ul.find("li"));
                 // 这种情况下需要在新增节点后对节点新增工具栏
-                if(_this.toolbar && _this.toolbarWay != 'contextmenu') {
+                if(_this.toolbar && _this.toolbarWay !== 'contextmenu') {
                     _this.dynamicToolbarDom($thisDiv.find("cite[data-leaf]"));
                 }
             }
@@ -4517,7 +4584,7 @@ layui.define(['jquery','layer','form'], function(exports) {
      * @Param: param: 编辑页打开之后回显的数据集
      */
     DTree.prototype.changeTreeNodeDone = function(param){
-        var _this = this;
+        const _this = this;
         form.val('dtree_editNode_' + _this.obj[0].id + '_form', param);
         form.render();
     };
@@ -4527,16 +4594,16 @@ layui.define(['jquery','layer','form'], function(exports) {
      * @Param: returnID: 当前需要变更的内容，JSON对象
      */
     DTree.prototype.changeTreeNodeEdit = function(returnID){
-        var _this = this;
-        var temp = _this.temp;
-        var $cite = temp[0], $div = temp[1], title = temp[2], $p_div = temp[3];
-        var flag = false;
+        const _this = this;
+        const temp = _this.temp;
+        const $cite = temp[0], $div = temp[1], title = temp[2], $p_div = temp[3];
+        const flag = false;
         if(returnID){
             if(typeof returnID === "object"){
-                var parseData = _this.parseData(data);
+                const parseData = _this.parseData(data);
 
                 if(parseData.treeId()){
-                    var replaceDom = _this.replaceDom($div, parseData.treeId(), parseData.last(0), parseData.spread(), parseData.disabled(), parseData.hide());
+                    const replaceDom = _this.replaceDom($div, parseData.treeId(), parseData.last(0), parseData.spread(), parseData.disabled(), parseData.hide());
                     replaceDom.node(parseData.iconClass());
                     replaceDom.checkbox(parseData.checkArr());
                     replaceDom.text(parseData.title());
@@ -4563,9 +4630,9 @@ layui.define(['jquery','layer','form'], function(exports) {
      * @Param: flag: 是否要删除节点
      */
     DTree.prototype.changeTreeNodeDel = function(flag){
-        var _this = this;
-        var temp = _this.temp;
-        var $p_li = temp[0],
+        const _this = this;
+        const temp = _this.temp;
+        const $p_li = temp[0],
             $p_ul = $p_li.parent("ul"),
             $p_div = temp[1];
 
@@ -4573,7 +4640,7 @@ layui.define(['jquery','layer','form'], function(exports) {
             $p_li.remove();
             _this.showLine($p_ul.find("li"));
             // 判断父级ul中是否还存在li,如果不存在，则需要修改节点的样式
-            if($p_ul.children("li").length == 0){
+            if($p_ul.children("li").length === 0){
                 var $icon_i = $p_div.find("i[data-spread]");
                 _this.operateIcon($icon_i.eq(0), $icon_i.eq(1)).closeWithLeaf();
             }
@@ -4590,16 +4657,16 @@ layui.define(['jquery','layer','form'], function(exports) {
      * @Param: iframeParam: iframe加载的参数
      */ 
     DTree.prototype.loadIframe = function($div, iframeParam) {
-        var _this = this;
-        var $cite = _this.getNodeDom($div).cite();
+        const _this = this;
+        const $cite = _this.getNodeDom($div).cite();
         if (!_this.useIframe) {		// 启用iframe
             return false;
         }
-        var iframeElem = _this.iframeElem,
+        const iframeElem = _this.iframeElem,
             iframeUrl = _this.iframeUrl,
             iframeLoad = _this.iframeLoad;
 
-        var flag = iframeLoad == "leaf" ? (($cite.attr("data-leaf") == "leaf") ? true : false) : true;
+        const flag = iframeLoad === "leaf" ? $cite.attr("data-leaf") === "leaf" : true;
 
         if (flag) {
             if ($(iframeElem).length > 0) {		//iframe存在
@@ -4607,11 +4674,11 @@ layui.define(['jquery','layer','form'], function(exports) {
                     layer.msg("数据请求异常，iframeUrl参数未指定", {icon:5});
                     return false;
                 }
-                var param = AjaxHelper.serialize("?", iframeParam);
+                let param = AjaxHelper.serialize("?", iframeParam);
                 if(iframeUrl.indexOf("?")> -1){
                     param = "&"+param.substring(1, param.length);
                 }
-                var url = iframeUrl + param;
+                const url = iframeUrl + param;
                 $(iframeElem).attr("src", url);
             } else {
                 layer.msg("iframe绑定异常，请确认页面中是否有iframe页对应的容器", {icon:5});
@@ -4626,19 +4693,20 @@ layui.define(['jquery','layer','form'], function(exports) {
      * @Param: nodes: 需要传递出去的参数
      */
     DTree.prototype.getIframeRequestParam = function(nodes){
-        var _this = this;
-        var request = _this.iframeRequest,
+        let key;
+        const _this = this;
+        const request = _this.iframeRequest,
             defaultRequestNames = _this.iframeDefaultRequest,
             node = nodes || _this.node,
             requestParam = {};
 
         // 先拼用户自定义的，在拼树生成的，这样的话用户可以自定义当树未生成时的节点的初始值
-        for ( var key in request) {
+        for ( key in request) {
             requestParam[key] = request[key];
         }
-        for ( var key in defaultRequestNames) {
-            var paramName = defaultRequestNames[key];
-            var paramValue = node[key];
+        for (key in defaultRequestNames) {
+            const paramName = defaultRequestNames[key];
+            const paramValue = node[key];
             if(typeof paramValue === "boolean"){
                 requestParam[paramName] = paramValue;
             }else {
@@ -4649,10 +4717,10 @@ layui.define(['jquery','layer','form'], function(exports) {
         }
 
         // 解决传递中文的乱码问题
-        var reg = /[\u4E00-\u9FA5\uF900-\uFA2D]/;	//正则匹配中文
-        for(var key in requestParam){
+        const reg = /[\u4E00-\u9FA5\uF900-\uFA2D]/;	//正则匹配中文
+        for(key in requestParam){
             if(reg.test(requestParam[key])) {
-                var str = requestParam[key];
+                const str = requestParam[key];
                 requestParam[key] = encodeURI(encodeURI(str));
             }
         }
@@ -4666,9 +4734,9 @@ layui.define(['jquery','layer','form'], function(exports) {
      * @Param: id: 节点的ID值
      */
     DTree.prototype.getNodeDom = function(id){
-        var _this = this;
+        const _this = this;
         // 获取当前div，如果id就是一个dom，则就是这个，如果不是则进行选择。如果选不中则为null
-        var $div = (typeof id === 'object') ? id : (_this.obj.find("div[dtree-click='"+eventName.itemNodeClick+"'][data-id='"+id+"']").length == 0) ? null : _this.obj.find("div[dtree-click='"+eventName.itemNodeClick+"'][data-id='"+id+"']");
+        const $div = (typeof id === 'object') ? id : (_this.obj.find("div[dtree-click='" + eventName.itemNodeClick + "'][data-id='" + id + "']").length === 0) ? null : _this.obj.find("div[dtree-click='" + eventName.itemNodeClick + "'][data-id='" + id + "']");
         return {
             div: function(){	// 获取当前div
                 return $div;
@@ -4698,13 +4766,13 @@ layui.define(['jquery','layer','form'], function(exports) {
                 return ($div == null) ? null : $div.parent("li").parent("ul").prev("div");
             },
             nowDiv: function(){		// 获取当前选中节点，没有则返回null
-                return (_this.obj.find("div[dtree-click='"+eventName.itemNodeClick+"'][data-id]").parent().find("."+NAV_THIS).length == 0) ? null : _this.obj.find("div[dtree-click='"+eventName.itemNodeClick+"'][data-id]").parent().find("."+NAV_THIS);
+                return (_this.obj.find("div[dtree-click='"+eventName.itemNodeClick+"'][data-id]").parent().find("."+NAV_THIS).length === 0) ? null : _this.obj.find("div[dtree-click='"+eventName.itemNodeClick+"'][data-id]").parent().find("."+NAV_THIS);
             },
             nowOrRootDiv: function(){	// 获取当前选中节点，没有则返回根节点下的第一个div
-                return (_this.obj.find("div[dtree-click='"+eventName.itemNodeClick+"'][data-id]").parent().find("."+NAV_THIS).length == 0) ? _this.obj.children("li").eq(0).children("div").eq(0) : _this.obj.find("div[dtree-click='"+eventName.itemNodeClick+"'][data-id]").parent().find("."+NAV_THIS);
+                return (_this.obj.find("div[dtree-click='"+eventName.itemNodeClick+"'][data-id]").parent().find("."+NAV_THIS).length === 0) ? _this.obj.children("li").eq(0).children("div").eq(0) : _this.obj.find("div[dtree-click='"+eventName.itemNodeClick+"'][data-id]").parent().find("."+NAV_THIS);
             },
             nowOrRootUl: function(){	// 获取当前选中节点下一个UL 或根节点。为了将新节点放入ul下
-                return (_this.obj.find("div[dtree-click='"+eventName.itemNodeClick+"'][data-id]").parent().find("."+NAV_THIS).length == 0) ? _this.obj : _this.obj.find("div[dtree-click='"+eventName.itemNodeClick+"'][data-id]").parent().find("."+NAV_THIS).next("ul");
+                return (_this.obj.find("div[dtree-click='"+eventName.itemNodeClick+"'][data-id]").parent().find("."+NAV_THIS).length === 0) ? _this.obj : _this.obj.find("div[dtree-click='"+eventName.itemNodeClick+"'][data-id]").parent().find("."+NAV_THIS).next("ul");
             }
         }
     };
@@ -4713,7 +4781,7 @@ layui.define(['jquery','layer','form'], function(exports) {
      * @Desc: 获取当前选中节点下一个ul节点 或根节点。为了将新节点放入ul下
      */
     DTree.prototype.getNowNodeUl =  function() {
-        var _this = this;
+        const _this = this;
         return _this.getNodeDom().nowOrRootUl();
     };
 
@@ -4721,7 +4789,7 @@ layui.define(['jquery','layer','form'], function(exports) {
      * @Desc: 获取当前选中div节点 或第一个根div节点。
      */
     DTree.prototype.getNowNode =  function() {
-        var _this = this;
+        const _this = this;
         return _this.getNodeDom().nowOrRootDiv();
     };
 
@@ -4729,7 +4797,7 @@ layui.define(['jquery','layer','form'], function(exports) {
      * @Desc: 获取当前选中div节点 无则返回null。
      */
     DTree.prototype.getNowNodeOrNull =  function() {
-        var _this = this;
+        const _this = this;
         return _this.getNodeDom().nowDiv();
     };
 
@@ -4738,7 +4806,7 @@ layui.define(['jquery','layer','form'], function(exports) {
      * @Param: id： 指定节点的ID
      */
     DTree.prototype.getNode =  function(id) {
-        var _this = this;
+        const _this = this;
         return _this.getNodeDom(id).div();
     };
 
@@ -4747,7 +4815,7 @@ layui.define(['jquery','layer','form'], function(exports) {
      * @Param: $div： 当前选中的节点
      */
     DTree.prototype.setNodeParam = function($div) {
-        var _this = this;
+        const _this = this;
         _this.node.nodeId = $div.attr("data-id");
         _this.node.parentId = _this.getNodeDom($div).parentLi().attr("data-pid");
         _this.node.context = (typeof _this.formatter.title === 'function') ? _this.getNodeDom($div).cite().attr("data-title") : _this.getNodeDom($div).cite().text();
@@ -4755,20 +4823,20 @@ layui.define(['jquery','layer','form'], function(exports) {
         _this.node.level = _this.getNodeDom($div).parentLi().attr("data-index");
         _this.node.spread = _this.getNodeDom($div).fnode().attr("data-spread") == "open" ? true : false;
 
-        var basicData = $div.attr("data-basic");
+        let basicData = $div.attr("data-basic");
         if(basicData) {
         	basicData = JSON.parse(event.unescape(basicData));
         }
         _this.node.basicData = basicData;
-        
-        var recordData = $div.attr("data-record");
+
+        let recordData = $div.attr("data-record");
         if(recordData) {
         	recordData = JSON.parse(event.unescape(recordData));
         }
         _this.node.recordData = recordData;
         
         if (_this.getNodeDom($div).checkbox()) {
-            var dataTypes = "", checkeds = "", initcheckeds = "";
+            let dataTypes = "", checkeds = "", initcheckeds = "";
             _this.getNodeDom($div).checkbox().each(function(){
                 dataTypes += $(this).attr("data-type") + ",";
                 checkeds += $(this).attr("data-checked") + ",";
@@ -4789,11 +4857,11 @@ layui.define(['jquery','layer','form'], function(exports) {
      * @Param: $div： 当前选中的节点
      */
     DTree.prototype.getNodeParam = function($div) {
-        var _this = this;
+        const _this = this;
         if ($div) {
             _this.setNodeParam($div);
         } else {
-            if(_this.obj.find("div[data-id]").parent().find("."+NAV_THIS).length == 0){
+            if(_this.obj.find("div[data-id]").parent().find("."+NAV_THIS).length === 0){
                 _this.initNodeParam();
             }
         }
@@ -4805,28 +4873,28 @@ layui.define(['jquery','layer','form'], function(exports) {
      * @Param: $div： 当前选中的节点
      */
     DTree.prototype.getTempNodeParam = function($div) {
-        var _this = this;
-        var temp_node = {};
+        const _this = this;
+        const temp_node = {};
         temp_node.nodeId = $div.attr("data-id");
         temp_node.parentId = _this.getNodeDom($div).parentLi().attr("data-pid");
         temp_node.context = (typeof _this.formatter.title === 'function') ? _this.getNodeDom($div).cite().attr("data-title") : _this.getNodeDom($div).cite().text();
-        temp_node.leaf = _this.getNodeDom($div).cite().attr("data-leaf") == "leaf" ? true : false;
+        temp_node.leaf = _this.getNodeDom($div).cite().attr("data-leaf") === "leaf";
         temp_node.level = _this.getNodeDom($div).parentLi().attr("data-index");
-        temp_node.spread = _this.getNodeDom($div).fnode().attr("data-spread") == "open" ? true : false;
-        
-        var basicData = $div.attr("data-basic");
+        temp_node.spread = _this.getNodeDom($div).fnode().attr("data-spread") === "open";
+
+        let basicData = $div.attr("data-basic");
         if(basicData) {
         	basicData = JSON.parse(event.unescape(basicData));
         }
         temp_node.basicData = basicData;
-        var recordData = $div.attr("data-record");
+        let recordData = $div.attr("data-record");
         if(recordData) {
         	recordData = JSON.parse(event.unescape(recordData));
         }
         temp_node.recordData = recordData;
         
         if (_this.getNodeDom($div).checkbox()) {
-            var dataTypes = "", checkeds = "", initcheckeds = "";
+            let dataTypes = "", checkeds = "", initcheckeds = "";
             _this.getNodeDom($div).checkbox().each(function(){
                 dataTypes += $(this).attr("data-type") + ",";
                 checkeds += $(this).attr("data-checked") + ",";
@@ -4847,7 +4915,7 @@ layui.define(['jquery','layer','form'], function(exports) {
      * @Desc: 重置内置参数
      */
     DTree.prototype.initNodeParam = function(){
-        var _this = this;
+        const _this = this;
         _this.node.nodeId = "";
         _this.node.parentId = "";
         _this.node.context = "";
@@ -4870,19 +4938,20 @@ layui.define(['jquery','layer','form'], function(exports) {
      * @Param: nodes：需要传递出去的参数
      */
     DTree.prototype.getRequestParam = function(nodes){
-        var _this = this;
-        var request = _this.request,
+        let key;
+        const _this = this;
+        const request = _this.request,
             defaultRequestNames = _this.defaultRequest,
             node = nodes || _this.node,
             requestParam = {};
 
         // 先拼用户自定义的，在拼树生成的，这样的话用户可以自定义当树未生成时的节点的初始值
-        for ( var key in request) {
+        for ( key in request) {
             requestParam[key] = request[key];
         }
-        for ( var key in defaultRequestNames) {
-            var paramName = defaultRequestNames[key];
-            var paramValue = node[key];
+        for (key in defaultRequestNames) {
+            const paramName = defaultRequestNames[key];
+            const paramValue = node[key];
             if(typeof paramValue === "boolean"){
                 requestParam[paramName] = paramValue;
             }else {
@@ -4900,8 +4969,8 @@ layui.define(['jquery','layer','form'], function(exports) {
      * @Param: requestParam：请求参数
      */
     DTree.prototype.getFilterRequestParam = function(requestParam){
-        var _this = this;
-        var filterRequest = _this.filterRequest;
+        const _this = this;
+        const filterRequest = _this.filterRequest;
         return event.cloneObj(requestParam, filterRequest);
     };
 
@@ -4909,7 +4978,7 @@ layui.define(['jquery','layer','form'], function(exports) {
      * @Desc:  获取当前选中的请求参数
      */
     DTree.prototype.getNowParam = function(){
-        var _this = this;
+        const _this = this;
 
         return _this.getRequestParam(_this.getNodeParam());
     };
@@ -4919,10 +4988,10 @@ layui.define(['jquery','layer','form'], function(exports) {
      * @Param: id：节点的ID值
      */
     DTree.prototype.getParam = function(id){
-        var _this = this;
+        const _this = this;
 
         // 获取当前div，如果id就是一个dom，则就是这个，如果不是则进行选择。如果选不中则为null
-        var $div = (typeof id === 'object') ? id : (_this.obj.find("div[dtree-click='"+eventName.itemNodeClick+"'][data-id='"+id+"']").length == 0) ? null : _this.obj.find("div[dtree-click='"+eventName.itemNodeClick+"'][data-id='"+id+"']");
+        const $div = (typeof id === 'object') ? id : (_this.obj.find("div[dtree-click='" + eventName.itemNodeClick + "'][data-id='" + id + "']").length === 0) ? null : _this.obj.find("div[dtree-click='" + eventName.itemNodeClick + "'][data-id='" + id + "']");
         if($div != null){ return _this.callbackData().node(_this.getTempNodeParam($div)); } else { return {}; }
     };
 
@@ -4931,9 +5000,9 @@ layui.define(['jquery','layer','form'], function(exports) {
      * @Param: id：节点的ID值
      */
     DTree.prototype.getParentParam = function(id){
-        var _this = this;
+        const _this = this;
         // 获取当前div，如果id就是一个dom，则就是这个，如果不是则进行选择。如果选不中则为null
-        var $div = (typeof id === 'object') ? id : (_this.obj.find("div[dtree-click='"+eventName.itemNodeClick+"'][data-id='"+id+"']").length == 0) ? null : _this.obj.find("div[dtree-click='"+eventName.itemNodeClick+"'][data-id='"+id+"']");
+        const $div = (typeof id === 'object') ? id : (_this.obj.find("div[dtree-click='" + eventName.itemNodeClick + "'][data-id='" + id + "']").length === 0) ? null : _this.obj.find("div[dtree-click='" + eventName.itemNodeClick + "'][data-id='" + id + "']");
         if($div != null){ return _this.callbackData().parentNode($div); } else { return {}; }
     };
 
@@ -4942,13 +5011,13 @@ layui.define(['jquery','layer','form'], function(exports) {
      * @Param: id：节点的ID值
      */
     DTree.prototype.getAllParentParam = function(id){
-        var _this = this;
+        const _this = this;
         // 获取当前div，如果id就是一个dom，则就是这个，如果不是则进行选择。如果选不中则为null
-        var $div = (typeof id === 'object') ? id : (_this.obj.find("div[dtree-click='"+eventName.itemNodeClick+"'][data-id='"+id+"']").length == 0) ? null : _this.obj.find("div[dtree-click='"+eventName.itemNodeClick+"'][data-id='"+id+"']");
-        var arr = [];
+        let $div = (typeof id === 'object') ? id : (_this.obj.find("div[dtree-click='" + eventName.itemNodeClick + "'][data-id='" + id + "']").length === 0) ? null : _this.obj.find("div[dtree-click='" + eventName.itemNodeClick + "'][data-id='" + id + "']");
+        const arr = [];
         if($div != null){
-            var level = _this.getTempNodeParam($div).level;
-            for(var i=1; i<level; i++){  // 从1开始遍历，如果level等于1说明是根节点
+            const level = _this.getTempNodeParam($div).level;
+            for(let i=1; i<level; i++){  // 从1开始遍历，如果level等于1说明是根节点
                 arr.unshift(_this.callbackData().parentNode($div));
                 $div = _this.getNodeDom($div).parentDiv();
             }
@@ -4961,9 +5030,9 @@ layui.define(['jquery','layer','form'], function(exports) {
      * @Param: id：节点的ID值
      */
     DTree.prototype.getChildParam = function(id){
-        var _this = this;
+        const _this = this;
         // 获取当前div，如果id就是一个dom，则就是这个，如果不是则进行选择。如果选不中则为null
-        var $div = (typeof id === 'object') ? id : (_this.obj.find("div[dtree-click='"+eventName.itemNodeClick+"'][data-id='"+id+"']").length == 0) ? null : _this.obj.find("div[dtree-click='"+eventName.itemNodeClick+"'][data-id='"+id+"']");
+        const $div = (typeof id === 'object') ? id : (_this.obj.find("div[dtree-click='" + eventName.itemNodeClick + "'][data-id='" + id + "']").length === 0) ? null : _this.obj.find("div[dtree-click='" + eventName.itemNodeClick + "'][data-id='" + id + "']");
         if($div != null){ return _this.callbackData().childNode($div); } else { return []; }
     };
 
@@ -4971,7 +5040,7 @@ layui.define(['jquery','layer','form'], function(exports) {
      * @Desc: 参数获取集
      */
     DTree.prototype.callbackData = function(){
-        var _this = this;
+        const _this = this;
         return {
             dom: function($dom){  // 获取dom
                 return $dom;
@@ -4980,19 +5049,19 @@ layui.define(['jquery','layer','form'], function(exports) {
                 return _this.getRequestParam(node);
             },
             childNode: function($div){	// 获取下级节点值
-                var $childDivs = $div.next("ul").find("li."+LI_NAV_ITEM+" div."+LI_DIV_ITEM);
-                var childNode = [];
+                const $childDivs = $div.next("ul").find("li." + LI_NAV_ITEM + " div." + LI_DIV_ITEM);
+                const childNode = [];
                 if($childDivs && $childDivs.length > 0){
                     $childDivs.each(function(){
-                        var $cDiv = $(this);
+                        const $cDiv = $(this);
                         childNode.push(_this.getRequestParam(_this.getTempNodeParam($cDiv)));
                     });
                 }
                 return childNode;
             },
             parentNode: function($div){	// 获取上级节点值
-                var pId = _this.getNodeDom($div).parentLi().attr("data-pid");
-                var $pdiv = _this.obj.find("div[data-id='"+pId+"']");
+                const pId = _this.getNodeDom($div).parentLi().attr("data-pid");
+                const $pdiv = _this.obj.find("div[data-id='" + pId + "']");
                 if($pdiv.length > 0) {return _this.getRequestParam(_this.getTempNodeParam($pdiv));} else {return {};}
 
             }
@@ -5004,13 +5073,13 @@ layui.define(['jquery','layer','form'], function(exports) {
      * @Desc: 绑定浏览器事件
      */
     DTree.prototype.bindBrowserEvent = function(){
-        var _this = this;
-        var rootId = _this.obj[0].id;
+        const _this = this;
+        const rootId = _this.obj[0].id;
 
         // 绑定文件夹展开/收缩的图标的点击事件，点击时给当前节点的div添加选中class
         _this.obj.on("click", "i[data-spread]", function(event) {
             event.stopPropagation();
-            var $i = $(this),
+            const $i = $(this),
                 $div = $i.parent("div"),
                 node = _this.getNodeParam($div);
 
@@ -5022,14 +5091,14 @@ layui.define(['jquery','layer','form'], function(exports) {
             layui.event.call(this, MOD_NAME, "changeTree("+$(_this.obj)[0].id+")",  {
                 dom: _this.callbackData().dom($i),
                 param: _this.callbackData().node(node),
-                show: _this.callbackData().dom($i).attr("data-spread") == "open" ? true : false
+                show: _this.callbackData().dom($i).attr("data-spread") === "open"
             });
         });
 
         // 绑定所有子节点div的单击事件，点击时触发加载iframe或用户自定义想做的事情
         _this.obj.on("click", "div[dtree-click='"+eventName.itemNodeClick+"'][dtree-disabled='false']", function(event) {
             event.stopPropagation();
-            var $div = $(this),
+            const $div = $(this),
                 $cite = $div.find("cite"),
                 node = _this.getNodeParam($div);
             _this.toolbarHide();
@@ -5041,8 +5110,8 @@ layui.define(['jquery','layer','form'], function(exports) {
             }
 
             if (_this.useIframe) {
-                var iframeParam = _this.getFilterRequestParam(_this.getIframeRequestParam(node));
-                var flag = _this.loadIframe($div, iframeParam);	// 加载iframe
+                const iframeParam = _this.getFilterRequestParam(_this.getIframeRequestParam(node));
+                const flag = _this.loadIframe($div, iframeParam);	// 加载iframe
                 if (flag) {
                     // iframe加载完毕后，用户自定义想做的事情
                     _this.iframeFun.iframeDone(iframeParam);
@@ -5066,7 +5135,7 @@ layui.define(['jquery','layer','form'], function(exports) {
         // 绑定所有子节点div的双击事件，暴露on给用户自定义
         _this.obj.on("dblclick", "div[dtree-click='"+eventName.itemNodeClick+"'][dtree-disabled='false']", function(event) {
             event.stopPropagation();
-            var $div = $(this),
+            const $div = $(this),
                 $cite = $div.find("cite"),
                 node = _this.getNodeParam($div);
             _this.toolbarHide();
@@ -5090,11 +5159,11 @@ layui.define(['jquery','layer','form'], function(exports) {
             // 绑定cheboxbar的节点复选框
             _this.obj.on("click", "i[dtree-click='"+eventName.checkNodeClick+"'][dtree-disabled='false']", function(event) {
                 _this.toolbarHide();
-                var $i = $(this),
-                    $div = $i.closest("div[dtree-click='"+eventName.itemNodeClick+"']"),
+                const $i = $(this),
+                    $div = $i.closest("div[dtree-click='" + eventName.itemNodeClick + "']"),
                     node = _this.getNodeParam($div);
                 // 复选框选中前的回调
-                var flag = _this.checkbarFun.chooseBefore($i, _this.getRequestParam(node));
+                const flag = _this.checkbarFun.chooseBefore($i, _this.getRequestParam(node));
                 _this.temp = [$i];
                 if(flag){_this.changeCheck();}
                 
@@ -5126,10 +5195,10 @@ layui.define(['jquery','layer','form'], function(exports) {
         }
 
         if(_this.toolbar) {
-            if(_this.toolbarWay == "contextmenu") {
+            if(_this.toolbarWay === "contextmenu") {
                 //绑定所有子节点div的右键点击事件，用于显示toolbar
                 _this.obj.on("contextmenu", "div[dtree-click='"+eventName.itemNodeClick+"'][d-contextmenu='true'][dtree-disabled='false']", function(e){
-                    var $div = $(this),
+                    const $div = $(this),
                         node = _this.getNodeParam($div);
 
                     _this.toolbarHide();
@@ -5141,7 +5210,7 @@ layui.define(['jquery','layer','form'], function(exports) {
                         my = $div.offset().top - _this.obj.closest(_this.scroll).offset().top +15;
 
                     _this.navThis($div);
-                    var $toolBarDiv = _this.obj.prevAll('div#dtree_toolbar_'+_this.obj[0].id);
+                    const $toolBarDiv = _this.obj.prevAll('div#dtree_toolbar_' + _this.obj[0].id);
                     $toolBarDiv.find(".layui-nav-child").addClass('layui-anim-fadein layui-show');
                     $toolBarDiv.css({'left':mx+'px','top':my+'px'});
 
@@ -5157,35 +5226,35 @@ layui.define(['jquery','layer','form'], function(exports) {
                 // 绑定toolbar的点击事件
                 _this.obj.prevAll('div#dtree_toolbar_'+_this.obj[0].id).on("click", "a[dtree-tool]", function(event) {
                     event.stopPropagation();
-                    var $div = _this.getNodeDom().nowOrRootDiv(),
+                    const $div = _this.getNodeDom().nowOrRootDiv(),
                         node = _this.getNodeParam($div);
                     _this.toolbarHide();
-                    var tool = $(this).attr("dtree-tool");
+                    const tool = $(this).attr("dtree-tool");
                     _this.toolbarListener(tool, $div);
                 });
-            } else if(_this.toolbarWay == "fixed") {
+            } else if(_this.toolbarWay === "fixed") {
                 // 绑定toolbar的点击事件
                 _this.obj.on("click", "a[dtree-tool]", function(event) {
                     event.stopPropagation();
-                    var $a = $(this),
-                        $cite = $a.parent("em."+TOOLBAR_TOOL_EM).prev("cite"),	//当前选中节点的text
+                    const $a = $(this),
+                        $cite = $a.parent("em." + TOOLBAR_TOOL_EM).prev("cite"),	//当前选中节点的text
                         $div = $cite.parent("div"),
                         node = _this.getNodeParam($div);
-                    var tool = $a.attr("dtree-tool");
+                    const tool = $a.attr("dtree-tool");
 
                     _this.toolbarHide();
                     _this.navThis($div);
                     _this.toolbarListener(tool, $div);
                 });
-            } else if(_this.toolbarWay == "follow") {
+            } else if(_this.toolbarWay === "follow") {
                 //绑定所有子节点div的mouseover mouseout事件，用于显示或隐藏toolbar
                 _this.obj.on("mouseover mouseout", "div[dtree-click='"+eventName.itemNodeClick+"'][dtree-disabled='false']", function(event){
-                    var $div = $(this),
-                        $toolBarEm = $div.children("em."+TOOLBAR_TOOL_EM);
-                    if(event.type == "mouseover"){
+                    const $div = $(this),
+                        $toolBarEm = $div.children("em." + TOOLBAR_TOOL_EM);
+                    if(event.type === "mouseover"){
                         $toolBarEm.removeClass(NAV_HIDE);
                         event.stopPropagation();
-                    } else if(event.type == "mouseout"){
+                    } else if(event.type === "mouseout"){
                         $toolBarEm.addClass(NAV_HIDE);
                         event.stopPropagation();
                     }
@@ -5194,11 +5263,11 @@ layui.define(['jquery','layer','form'], function(exports) {
                 // 绑定toolbar的点击事件
                 _this.obj.on("click", "a[dtree-tool]", function(event) {
                     event.stopPropagation();
-                    var $a = $(this),
-                        $cite = $a.parent("em."+TOOLBAR_TOOL_EM).prev("cite"),	//当前选中节点的text
+                    const $a = $(this),
+                        $cite = $a.parent("em." + TOOLBAR_TOOL_EM).prev("cite"),	//当前选中节点的text
                         $div = $cite.parent("div"),
                         node = _this.getNodeParam($div);
-                    var tool = $a.attr("dtree-tool");
+                    const tool = $a.attr("dtree-tool");
 
                     _this.toolbarHide();
                     _this.navThis($div);
@@ -5211,16 +5280,16 @@ layui.define(['jquery','layer','form'], function(exports) {
             // 绑定select的点击事件
             $("div[dtree-id='" + rootId + "'][dtree-select='"+_this.selectDiv+"']").on("click", function(event){
                 event.stopPropagation();
-                var dl = $(this).find('dl');
+                const dl = $(this).find('dl');
                 //debugger;
                 $(this).toggleClass("layui-form-selected");
-                
-                var $card = $("div[dtree-id='" + rootId + "'][dtree-card='"+_this.selectCardDiv+"']");
-                
+
+                const $card = $("div[dtree-id='" + rootId + "'][dtree-card='" + _this.selectCardDiv + "']");
+
                 $card.toggleClass("dtree-select-show layui-anim layui-anim-upbit");
-                var top = $(this).offset().top + $(this).outerHeight() - $WIN.scrollTop() - 5,
-                	cardHeight = $card.height(),
-                	winHeight = $WIN.height();
+                const top = $(this).offset().top + $(this).outerHeight() - $WIN.scrollTop() - 5,
+                    cardHeight = $card.height(),
+                    winHeight = $WIN.height();
 //                console.log("top =  $(this).offset().top: " + $(this).offset().top + " + $(this).outerHeight(): " + $(this).outerHeight() + " - $WIN.scrollTop(): " + $WIN.scrollTop() + " - 5 =" + top);
 //                console.log("winHeight = " + winHeight);
                 if($card.hasClass('dtree-select-up')) {
@@ -5259,7 +5328,7 @@ layui.define(['jquery','layer','form'], function(exports) {
 
     // 解绑浏览器事件
     DTree.prototype.unbindBrowserEvent = function(){
-        var _this = this;
+        const _this = this;
 
         // 本身事件解绑
         _this.obj.unbind();
@@ -5273,7 +5342,7 @@ layui.define(['jquery','layer','form'], function(exports) {
 
         // 工具栏解绑
         if(_this.toolbar){
-            if(_this.toolbarWay == "contextmenu") {
+            if(_this.toolbarWay === "contextmenu") {
                 _this.obj.prevAll('div#dtree_toolbar_'+_this.obj[0].id).unbind();
                 if(_this.obj.closest(_this.scroll).length > 0){
                     _this.obj.closest(_this.scroll).unbind();
@@ -5292,20 +5361,20 @@ layui.define(['jquery','layer','form'], function(exports) {
 
 
     /** 外部访问 **/
-    var dtree = {
-        set: function(options){ //设置全局属性
-            if(typeof options !== 'undefined') {
+    const dtree = {
+        set: function (options) { //设置全局属性
+            if (typeof options !== 'undefined') {
                 $.extend(OPTIONS, options);
             }
         },
-        render: function(options){	// 初始化树
-            var dTree = null;
-            var id = event.getElemId(options);
-            if(id == "") {
-                layer.msg("页面中未找到绑定id", {icon:5});
+        render: function (options) {	// 初始化树
+            let dTree = null;
+            const id = event.getElemId(options);
+            if (id === "") {
+                layer.msg("页面中未找到绑定id", {icon: 5});
             } else {
                 dTree = DTrees[id];
-                if(typeof dTree === 'object'){
+                if (typeof dTree === 'object') {
                     dTree.unbindBrowserEvent();
                 }
                 // 创建树
@@ -5320,14 +5389,14 @@ layui.define(['jquery','layer','form'], function(exports) {
 
             return dTree;
         },
-        renderSelect: function(options){ 	// 初始化下拉树
-            var dTree = null;
-            var id = event.getElemId(options);
-            if(id == "") {
-                layer.msg("页面中未找到绑定id", {icon:5});
+        renderSelect: function (options) { 	// 初始化下拉树
+            let dTree = null;
+            const id = event.getElemId(options);
+            if (id === "") {
+                layer.msg("页面中未找到绑定id", {icon: 5});
             } else {
                 dTree = DTrees[id];
-                if(typeof dTree === 'object'){
+                if (typeof dTree === 'object') {
                     dTree.unbindBrowserEvent();
                 }
                 // 创建下拉树
@@ -5343,13 +5412,13 @@ layui.define(['jquery','layer','form'], function(exports) {
 
             return dTree;
         },
-        reload: function(dTree, options){  // 重新加载树
-            if(typeof dTree === "string"){
+        reload: function (dTree, options) {  // 重新加载树
+            if (typeof dTree === "string") {
                 dTree = DTrees[dTree];
             }
-            if(typeof dTree === "undefined"){
-                layer.msg("方法获取失败，请检查ID或对象传递是否正确",{icon:2});
-                return ;
+            if (typeof dTree === "undefined") {
+                layer.msg("方法获取失败，请检查ID或对象传递是否正确", {icon: 2});
+                return;
             }
             dTree.reloadSetting(options);
             dTree.initTreePlus();
@@ -5359,169 +5428,169 @@ layui.define(['jquery','layer','form'], function(exports) {
             dTree.unbindBrowserEvent();
             dTree.bindBrowserEvent();
         },
-        on: function(events, callback) {	// 绑定事件
-            if(events.indexOf("'") > 0){
-                events = events.replace(/'/g,"");
+        on: function (events, callback) {	// 绑定事件
+            if (events.indexOf("'") > 0) {
+                events = events.replace(/'/g, "");
             }
-            if(events.indexOf('"') > 0) {
-                events = events.replace(/"/g,"");
+            if (events.indexOf('"') > 0) {
+                events = events.replace(/"/g, "");
             }
             return layui.onevent.call(this, MOD_NAME, events, callback);
         },
-        click: function(dTree, id) { // 模拟单击事件
-            if(typeof dTree === "string"){
+        click: function (dTree, id) { // 模拟单击事件
+            if (typeof dTree === "string") {
                 dTree = DTrees[dTree];
             }
-            if(typeof dTree === "undefined"){
-                layer.msg("方法获取失败，请检查ID或对象传递是否正确",{icon:2});
-                return ;
+            if (typeof dTree === "undefined") {
+                layer.msg("方法获取失败，请检查ID或对象传递是否正确", {icon: 2});
+                return;
             }
-            $("div[dtree-click='"+eventName.itemNodeClick+"'][dtree-id='"+dTree.obj[0].id+"'][data-id='"+id+"']").click();
+            $("div[dtree-click='" + eventName.itemNodeClick + "'][dtree-id='" + dTree.obj[0].id + "'][data-id='" + id + "']").click();
         },
-        getNowParam: function(dTree){  // 获取当前选中值
-            if(typeof dTree === "string"){
+        getNowParam: function (dTree) {  // 获取当前选中值
+            if (typeof dTree === "string") {
                 dTree = DTrees[dTree];
             }
-            if(typeof dTree === "undefined"){
-                layer.msg("方法获取失败，请检查ID或对象传递是否正确",{icon:2});
-                return ;
+            if (typeof dTree === "undefined") {
+                layer.msg("方法获取失败，请检查ID或对象传递是否正确", {icon: 2});
+                return;
             }
             return dTree.getNowParam();	// 获取当前选中值
         },
-        getParam: function(dTree, id){  // 获取指定节点值
-            if(typeof dTree === "string"){
+        getParam: function (dTree, id) {  // 获取指定节点值
+            if (typeof dTree === "string") {
                 dTree = DTrees[dTree];
             }
-            if(typeof dTree === "undefined"){
-                layer.msg("方法获取失败，请检查ID或对象传递是否正确",{icon:2});
-                return ;
+            if (typeof dTree === "undefined") {
+                layer.msg("方法获取失败，请检查ID或对象传递是否正确", {icon: 2});
+                return;
             }
             return dTree.getParam(id);	// 获取指定节点值
         },
-        getParentParam: function(dTree, id){  // 获取参数的上级节点
-            if(typeof dTree === "string"){
+        getParentParam: function (dTree, id) {  // 获取参数的上级节点
+            if (typeof dTree === "string") {
                 dTree = DTrees[dTree];
             }
-            if(typeof dTree === "undefined"){
-                layer.msg("方法获取失败，请检查ID或对象传递是否正确",{icon:2});
-                return ;
+            if (typeof dTree === "undefined") {
+                layer.msg("方法获取失败，请检查ID或对象传递是否正确", {icon: 2});
+                return;
             }
             return dTree.getParentParam(id);
         },
-        getAllParentParam: function(dTree, id){  // 获取参数的全部上级节点
-            if(typeof dTree === "string"){
+        getAllParentParam: function (dTree, id) {  // 获取参数的全部上级节点
+            if (typeof dTree === "string") {
                 dTree = DTrees[dTree];
             }
-            if(typeof dTree === "undefined"){
-                layer.msg("方法获取失败，请检查ID或对象传递是否正确",{icon:2});
-                return ;
+            if (typeof dTree === "undefined") {
+                layer.msg("方法获取失败，请检查ID或对象传递是否正确", {icon: 2});
+                return;
             }
             return dTree.getAllParentParam(id);
         },
-        getChildParam: function(dTree, id){  // 获取参数的全部下级节点
-            if(typeof dTree === "string"){
+        getChildParam: function (dTree, id) {  // 获取参数的全部下级节点
+            if (typeof dTree === "string") {
                 dTree = DTrees[dTree];
             }
-            if(typeof dTree === "undefined"){
-                layer.msg("方法获取失败，请检查ID或对象传递是否正确",{icon:2});
-                return ;
+            if (typeof dTree === "undefined") {
+                layer.msg("方法获取失败，请检查ID或对象传递是否正确", {icon: 2});
+                return;
             }
             return dTree.getChildParam(id);
         },
-        getCheckbarNodesParam: function(dTree){  // 获取复选框选中值
-            if(typeof dTree === "string"){
+        getCheckbarNodesParam: function (dTree) {  // 获取复选框选中值
+            if (typeof dTree === "string") {
                 dTree = DTrees[dTree];
             }
-            if(typeof dTree === "undefined"){
-                layer.msg("方法获取失败，请检查ID或对象传递是否正确",{icon:2});
+            if (typeof dTree === "undefined") {
+                layer.msg("方法获取失败，请检查ID或对象传递是否正确", {icon: 2});
                 return {};
             }
             return dTree.getCheckbarNodesParam();	// 获取复选框选中值
         },
-        getCheckbarJsonArrParam: function(dTree){  // 获取复选框选中值
-        	if(typeof dTree === "string"){
-        		dTree = DTrees[dTree];
-        	}
-        	if(typeof dTree === "undefined"){
-        		layer.msg("方法获取失败，请检查ID或对象传递是否正确",{icon:2});
-        		return {};
-        	}
-        	return dTree.getCheckbarJsonArrParam();	// 获取复选框选中值
+        getCheckbarJsonArrParam: function (dTree) {  // 获取复选框选中值
+            if (typeof dTree === "string") {
+                dTree = DTrees[dTree];
+            }
+            if (typeof dTree === "undefined") {
+                layer.msg("方法获取失败，请检查ID或对象传递是否正确", {icon: 2});
+                return {};
+            }
+            return dTree.getCheckbarJsonArrParam();	// 获取复选框选中值
         },
-        dataInit: function(dTree, chooseId){  // 初始化选中树，针对数据反选
-            if(typeof dTree === "string"){
+        dataInit: function (dTree, chooseId) {  // 初始化选中树，针对数据反选
+            if (typeof dTree === "string") {
                 dTree = DTrees[dTree];
             }
-            if(typeof dTree === "undefined"){
-                layer.msg("方法获取失败，请检查ID或对象传递是否正确",{icon:2});
-                return ;
+            if (typeof dTree === "undefined") {
+                layer.msg("方法获取失败，请检查ID或对象传递是否正确", {icon: 2});
+                return;
             }
-            if(chooseId){
+            if (chooseId) {
                 return dTree.dataInit(chooseId);
             }
         },
-        chooseDataInit: function(dTree, chooseIds){	// 初始化复选框选中，针对数据反选
-            if(typeof dTree === "string"){
+        chooseDataInit: function (dTree, chooseIds) {	// 初始化复选框选中，针对数据反选
+            if (typeof dTree === "string") {
                 dTree = DTrees[dTree];
             }
-            if(typeof dTree === "undefined"){
-                layer.msg("方法获取失败，请检查ID或对象传递是否正确",{icon:2});
-                return ;
+            if (typeof dTree === "undefined") {
+                layer.msg("方法获取失败，请检查ID或对象传递是否正确", {icon: 2});
+                return;
             }
-            if(chooseIds){
+            if (chooseIds) {
                 return dTree.chooseDataInit(chooseIds);
             }
         },
-        changeCheckbarNodes: function(dTree){	//判断复选框是否发生变更
-            if(typeof dTree === "string"){
+        changeCheckbarNodes: function (dTree) {	//判断复选框是否发生变更
+            if (typeof dTree === "string") {
                 dTree = DTrees[dTree];
             }
-            if(typeof dTree === "undefined"){
-                layer.msg("方法获取失败，请检查ID或对象传递是否正确",{icon:2});
-                return ;
+            if (typeof dTree === "undefined") {
+                layer.msg("方法获取失败，请检查ID或对象传递是否正确", {icon: 2});
+                return;
             }
             return dTree.changeCheckbarNodes();
         },
-        initNoAllCheck: function(dTree) { //复选框半选状态初始化设置
-            if(typeof dTree === "string"){
+        initNoAllCheck: function (dTree) { //复选框半选状态初始化设置
+            if (typeof dTree === "string") {
                 dTree = DTrees[dTree];
             }
-            if(typeof dTree === "undefined"){
-                layer.msg("方法获取失败，请检查ID或对象传递是否正确",{icon:2});
-                return ;
+            if (typeof dTree === "undefined") {
+                layer.msg("方法获取失败，请检查ID或对象传递是否正确", {icon: 2});
+                return;
             }
             return dTree.initNoAllCheck();
         },
-        initAllCheck: function(dTree){ // 复选框选中状态初始化设置
-            if(typeof dTree === "string"){
+        initAllCheck: function (dTree) { // 复选框选中状态初始化设置
+            if (typeof dTree === "string") {
                 dTree = DTrees[dTree];
             }
-            if(typeof dTree === "undefined"){
-                layer.msg("方法获取失败，请检查ID或对象传递是否正确",{icon:2});
-                return ;
+            if (typeof dTree === "undefined") {
+                layer.msg("方法获取失败，请检查ID或对象传递是否正确", {icon: 2});
+                return;
             }
             return dTree.initAllCheck();
         },
-        selectVal: function(dTree, param){  // select模式设置输入框选中值
-            if(typeof dTree === "string"){
+        selectVal: function (dTree, param) {  // select模式设置输入框选中值
+            if (typeof dTree === "string") {
                 dTree = DTrees[dTree];
             }
-            if(typeof dTree === "undefined"){
-                layer.msg("方法获取失败，请检查ID或对象传递是否正确",{icon:2});
-                return ;
+            if (typeof dTree === "undefined") {
+                layer.msg("方法获取失败，请检查ID或对象传递是否正确", {icon: 2});
+                return;
             }
             return dTree.selectVal(param);	// select模式设置输入框选中值
         },
-        escape: function(html){  // 字符串格式化
+        escape: function (html) {  // 字符串格式化
             return event.escape(html);
         },
-        unescape: function(str){  // 字符串反格式化
+        unescape: function (str) {  // 字符串反格式化
             return event.unescape(str);
         },
-        serialize: function(first, param) {  // 序列化JSON对象
-        	 return AjaxHelper.serialize(first, param);
+        serialize: function (first, param) {  // 序列化JSON对象
+            return AjaxHelper.serialize(first, param);
         },
-        version: function(){  //获取版本号
+        version: function () {  //获取版本号
             return VERSION;
         }
     };
-- 
Gitee