From 15eee8702307188b5b27b452f27620931f7da979 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?=E6=9E=97=E6=99=97=E5=B8=8C?= <2095000342@qq.com>
Date: Thu, 28 Nov 2024 03:37:34 +0000
Subject: [PATCH] =?UTF-8?q?=E4=BD=9C=E4=B8=9A=E4=B8=8A=E4=BC=A0?=
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Content-Type: text/plain; charset=UTF-8
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Signed-off-by: 林晗希 <2095000342@qq.com>
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+# 作业
+
+```html
+<!DOCTYPE html>
+<html lang="en">
+
+<head>
+  <meta charset="UTF-8" />
+  <meta name="viewport" content="width=device-width, initial-scale=1.0" />
+  <meta http-equiv="X-UA-Compatible" content="ie=edge" />
+  <title>学生就业统计表</title>
+  <link rel="stylesheet" href="./iconfont/iconfont.css">
+  <link rel="stylesheet" href="css/index.css" />
+</head>
+
+<body>
+  <h1>学生就业统计表</h1>
+  <form class="info" autocomplete="off">
+    <input type="text" class="uname" name="uname" placeholder="姓名" />
+    <input type="text" class="age" name="age" placeholder="年龄" />
+    <input type="text" class="salary" name="salary" placeholder="薪资" />
+    <select name="gender" class="gender">
+      <option value="男">男</option>
+      <option value="女">女</option>
+    </select>
+    <select name="city" class="city">
+      <option value="北京">北京</option>
+      <option value="上海">上海</option>
+      <option value="广州">广州</option>
+      <option value="深圳">深圳</option>
+      <option value="曹县">曹县</option>
+    </select>
+    <button class="add">
+      <i class="iconfont icon-tianjia"></i>添加
+    </button>
+  </form>
+
+  <div class="title">共有数据<span>0</span>条</div>
+  <table>
+    <thead>
+      <tr>
+        <th>ID</th>
+        <th>姓名</th>
+        <th>年龄</th>
+        <th>性别</th>
+        <th>薪资</th>
+        <th>就业城市</th>
+        <th>录入时间</th>
+        <th>操作</th>
+      </tr>
+    </thead>
+    <tbody>
+      <!-- <tr>
+        <td>1</td>
+        <td>迪丽热巴</td>
+        <td>23</td>
+        <td>女</td>
+        <td>12000</td>
+        <td>北京</td>
+        <td>2099/9/9 08:08:08</td>
+        <td>
+          <a href="javascript:">
+            <i class="iconfont icon-shanchu"></i>
+            删除
+          </a>
+        </td>
+      </tr> -->
+    </tbody>
+  </table>
+  <script>
+    // 参考数据
+    // const initData = [
+    //   {
+    //     stuId: 1,
+    //     uname: '迪丽热巴',
+    //     age: 22,
+    //     salary: '12000',
+    //     gender: '女',
+    //     city: '北京',
+    //     time: '2099/9/9 08:08:08'
+    //   }
+    // ]
+
+    // 准备数组
+    // 1. 先读取一下本地存储
+    const localData = localStorage.getItem('stuData') 
+
+    const data = JSON.parse(localData) || [];  
+    // 1.录入模块
+    // 1.1 从表单来，到数组中，再到本地存储 
+    // 1. 得到表单对象，添加提交事件
+    const form = document.querySelector('form')
+    const uname = document.querySelector('.uname')
+    const age = document.querySelector('.age')
+    const salary = document.querySelector('.salary')
+    const gender = document.querySelector('.gender')
+    const city = document.querySelector('.city')
+    const tbody = document.querySelector('tbody')
+
+    form.addEventListener('submit', function (e) {
+      e.preventDefault()
+
+      if (uname.value === '' || age.value === '' || salary.value === '') {
+        return alert('有内容没写')  //  return会立即返回，不再往后执行
+      }
+      // console.log('我开始保存表单到数组');
+      // 2. 验证通过后，将填写项组成一个对象，追加到数组中
+      const stu = {
+        stuId: data.length ? data[data.length - 1].stuId + 1 : 1,  
+        age: age.value,
+        salary: salary.value,
+        gender: gender.value,
+        city: city.value,
+        time: new Date().toLocaleString()
+      }
+      // console.log(stu);
+      // 将生成的对象，追加到数组
+      data.push(stu)
+      // console.log(data);
+      // 清空表单
+      form.reset() // this.reset()
+      localStorage.setItem('stuData', JSON.stringify(data))
+
+      displayTabale()
+    })
+
+    //  2 渲染页面
+    function displayTabale() {
+      // 2.1 从数组中来，到HTML中表格中tbody
+      // 利用数组的遍历方法map，返回一个tr的新数组
+      const newData = data.map(function (item, i) {   
+        return `
+                  <tr>
+                    <td>${item.stuId}</td>
+                    <td>${item.uname}</td>
+                    <td>${item.age}</td>
+                    <td>${item.salary}</td>
+                    <td>${item.gender}</td>
+                    <td>${item.city}</td>
+                    <td>${item.time}</td>
+                    <td>
+                      <a href="javascript:" data-id='${i}'>  
+                        <i class="iconfont icon-shanchu"></i>
+                        删除
+                      </a>
+                    </td>
+                  </tr>`
+      });
+      console.log(newData);
+      tbody.innerHTML = newData.join('')
+      // 显示条数
+      document.querySelector('.title span').innerHTML = data.length
+    }
+    displayTabale()
+
+    //  3.删除
+    // 1. 事件委托给tbody
+    tbody.addEventListener('click', function (e) {
+      // 只有点击A标签，才表示点击删除
+      if (e.target.tagName === 'A' && confirm('确认删除吗')) {  // 还要确认是否真的删除？      
+        // 利用数组的splice删除，要知道下标吧 e.target.dataset.id
+        data.splice(e.target.dataset.id, 1)
+        // 重新渲染
+        displayTabale()
+        // 重新本地存储
+        localStorage.setItem('stuData', JSON.stringify(data))
+
+
+      }
+
+    })
+
+  </script>
+</body>
+
+</html>
+```
+
+
-- 
Gitee

