diff --git "a/\347\252\246\347\253\213\346\235\250/js\350\277\236\346\216\245\346\225\260\346\215\256\345\272\223\345\242\236\345\210\240\346\224\271\346\237\245\344\275\234\344\270\232/dome.js" "b/\347\252\246\347\253\213\346\235\250/js\350\277\236\346\216\245\346\225\260\346\215\256\345\272\223\345\242\236\345\210\240\346\224\271\346\237\245\344\275\234\344\270\232/dome.js"
new file mode 100644
index 0000000000000000000000000000000000000000..384ba3f6c4601edad537a87f711eea2850230d81
--- /dev/null
+++ "b/\347\252\246\347\253\213\346\235\250/js\350\277\236\346\216\245\346\225\260\346\215\256\345\272\223\345\242\236\345\210\240\346\224\271\346\237\245\344\275\234\344\270\232/dome.js"
@@ -0,0 +1,34 @@
+// ### 作业：建一个用户表（有姓名,年龄,性别,创建时间,修改时间）,使用模块加mysql模块,实现对数据的增删改查
+
+// ###       修改时记得，把修改时间改成修改时的时间，能实现分页（选做）
+let mysql = require("mysql");
+let conne = mysql.createConnection({ host: "127.0.0.1", user: "root", password: "root", database: "dome" })
+conne.connect();
+//删
+// conne.query("DELETE FROM dome1 WHERE id=1",(err,data)=>{
+//     console.log(err);
+//     console.log(data);
+// }
+// );
+//增加数据
+let timestamp = new Date().toJSON();
+conne.query("INSERT INTO dome1 VALUE('小红',19,'女','" + timestamp + "','"+timestamp+"',NULL)", (err, data) => {
+    console.log(err);
+    console.log(data);
+
+}
+);
+// 修改数据
+let modifystamp =new Date().toJSON();
+conne.query("UPDATE dome1 SET   modifytame='"+modifystamp+"' WHERE id=14;",(err,data)=>{
+    console.log(err);
+    console.log(data);
+}
+);
+// 查
+conne.query("SELECT * FROM dome1", (err, data) => {
+    console.log(err);
+    console.log(data);
+}
+);
+conne.end();
\ No newline at end of file
diff --git "a/\347\252\246\347\253\213\346\235\250/\345\210\206\351\241\265\346\200\247\345\210\253\345\271\264\351\276\204\347\273\237\350\256\241\344\275\234\344\270\232/dome.js" "b/\347\252\246\347\253\213\346\235\250/\345\210\206\351\241\265\346\200\247\345\210\253\345\271\264\351\276\204\347\273\237\350\256\241\344\275\234\344\270\232/dome.js"
new file mode 100644
index 0000000000000000000000000000000000000000..983166ade9961f38b4332aacefe693daaac0fa6e
--- /dev/null
+++ "b/\347\252\246\347\253\213\346\235\250/\345\210\206\351\241\265\346\200\247\345\210\253\345\271\264\351\276\204\347\273\237\350\256\241\344\275\234\344\270\232/dome.js"
@@ -0,0 +1,37 @@
+// 实现分页,能实现男女个数和总数的统计
+// ,能统计出（小于18） 和 18-45 和 45岁以上的人数
+let mysql = require("mysql");
+let conne = mysql.createConnection({host:"127.0.0.1",user:"root",password:"123456",database:"dome"});
+conne.connect();
+
+let aa = 1;
+let bb = 3;
+conne.query("SELECT * FROM dly LIMIT "+(aa-1)*bb+","+bb,(err,data)=>{
+    console.log("第"+aa+"页");
+    console.log(data);
+})
+conne.query("select count(*) as '男生个数' from dly where sex='男'",(err,data)=>{
+    console.log("————————————————————男生个数————————————————————");
+    console.log(data);
+})
+conne.query("select count(*) as '女生个数' from dly where sex='女'",(err,data)=>{
+    console.log("————————————————————女生个数————————————————————");
+    console.log(data);
+})
+conne.query("select count(*) as '男女总数' from dly ",(err,data)=>{
+    console.log("————————————————————男女总数————————————————————");
+    console.log(data);
+})
+conne.query("SELECT COUNT(*) as '小于18岁的人数' FROM dly where dly.avg<18",(err,data)=>{
+    console.log("—————————————————————小于18周岁人数为————————————————————");
+    console.log(data);
+})
+conne.query("SELECT COUNT(*) as '18-45的人数' FROM dly where dly.avg>18 and dly.avg<45",(err,data)=>{
+    console.log("—————————————————————18-45周岁人数为————————————————————");
+    console.log(data);
+})
+conne.query("SELECT COUNT(*) as '45岁以上的人数' FROM dly where dly.avg<45",(err,data)=>{
+    console.log("—————————————————————45岁周岁以上人数为————————————————————");
+    console.log(data);
+})
+conne.end();
\ No newline at end of file
diff --git "a/\347\252\246\347\253\213\346\235\250/\345\210\206\351\241\265\346\200\247\345\210\253\345\271\264\351\276\204\347\273\237\350\256\241\344\275\234\344\270\232/dome.sql" "b/\347\252\246\347\253\213\346\235\250/\345\210\206\351\241\265\346\200\247\345\210\253\345\271\264\351\276\204\347\273\237\350\256\241\344\275\234\344\270\232/dome.sql"
new file mode 100644
index 0000000000000000000000000000000000000000..89287a59dba5ef217fb5ae174376e5572c9e7acf
--- /dev/null
+++ "b/\347\252\246\347\253\213\346\235\250/\345\210\206\351\241\265\346\200\247\345\210\253\345\271\264\351\276\204\347\273\237\350\256\241\344\275\234\344\270\232/dome.sql"
@@ -0,0 +1,43 @@
+/*
+ Navicat Premium Data Transfer
+
+ Source Server         : 127.0.0.1
+ Source Server Type    : MySQL
+ Source Server Version : 50737
+ Source Host           : localhost:3306
+ Source Schema         : dome
+
+ Target Server Type    : MySQL
+ Target Server Version : 50737
+ File Encoding         : 65001
+
+ Date: 23/02/2023 16:04:28
+*/
+
+SET NAMES utf8mb4;
+SET FOREIGN_KEY_CHECKS = 0;
+
+-- ----------------------------
+-- Table structure for dly
+-- ----------------------------
+DROP TABLE IF EXISTS `dly`;
+CREATE TABLE `dly`  (
+  `id` int(10) UNSIGNED NOT NULL AUTO_INCREMENT,
+  `name` varchar(255) CHARACTER SET utf8 COLLATE utf8_croatian_ci NULL DEFAULT NULL,
+  `sex` varchar(20) CHARACTER SET utf8 COLLATE utf8_croatian_ci NULL DEFAULT NULL,
+  `avg` int(20) NULL DEFAULT NULL,
+  PRIMARY KEY (`id`) USING BTREE
+) ENGINE = InnoDB AUTO_INCREMENT = 8 CHARACTER SET = utf8 COLLATE = utf8_croatian_ci ROW_FORMAT = DYNAMIC;
+
+-- ----------------------------
+-- Records of dly
+-- ----------------------------
+INSERT INTO `dly` VALUES (1, '小杨', '男', 20);
+INSERT INTO `dly` VALUES (2, '小黑', '男', 23);
+INSERT INTO `dly` VALUES (3, '小白', '男', 30);
+INSERT INTO `dly` VALUES (4, '小灰', '男', 60);
+INSERT INTO `dly` VALUES (5, '小青', '女', 25);
+INSERT INTO `dly` VALUES (6, '小蓝', '女', 20);
+INSERT INTO `dly` VALUES (7, '小懒', '女', 23);
+
+SET FOREIGN_KEY_CHECKS = 1;
diff --git "a/\347\252\246\347\253\213\346\235\250/\346\226\207\344\273\266\346\265\201\344\275\234\344\270\232/dome.js" "b/\347\252\246\347\253\213\346\235\250/\346\226\207\344\273\266\346\265\201\344\275\234\344\270\232/dome.js"
new file mode 100644
index 0000000000000000000000000000000000000000..f50e3d53531bacd288e03169b0b6ca74a8c04abe
--- /dev/null
+++ "b/\347\252\246\347\253\213\346\235\250/\346\226\207\344\273\266\346\265\201\344\275\234\344\270\232/dome.js"
@@ -0,0 +1,42 @@
+let fs = require("fs");
+let dom = fs.openSync("./dom2.txt", "a");//("需要创建的文件名","a - 以追加模式打开文件，如果文件不存在则创建")
+for (let i = 1; i <= 5; i++) {
+    fs.writeSync(dom, i + "douliyangyyds");
+}
+fs.closeSync(dom);
+var num = fs.createReadStream('./dom2.txt', 'utf-8');
+//读取流里面信息,会被多次触发
+num.on('data', function (chunk) {
+    console.log("文件里的信息:");
+    console.log(chunk);
+    let str = chunk;
+    let a = {};
+    for (let j = 0; j < str.length; j++) {
+        var chars = str.charAt(j);//charAt输出数组中下标为i的内容
+        if (a[chars]) {
+            a[chars]++;
+        } else {
+            a[chars] = 1
+        }
+    }
+    console.log(a)
+    let ch = '';
+    let max = 0;
+    for (let k in a) {
+        if (a[k] > max) {
+            max = a[k];
+            ch = k;
+        }
+    }
+    console.log("文件中最多的的字符是：" + ch);
+    console.log("次数是：" + max);
+});
+
+//读取完成,会自动触发end 函数
+num.on('end', function () {
+    console.log('读取文件完成');
+});
+//有异常会自动触发下面的方法
+num.on('error', function (err) {
+    console.log('异常: ' + err);
+});