diff --git "a/57 \345\210\230\346\263\260\346\261\237/20231121TAB\346\240\217\345\210\207\346\215\242.md" "b/57 \345\210\230\346\263\260\346\261\237/20231121TAB\346\240\217\345\210\207\346\215\242.md"
new file mode 100644
index 0000000000000000000000000000000000000000..095c79b0239124865087cb0d1f9a35e10dd6f001
--- /dev/null
+++ "b/57 \345\210\230\346\263\260\346\261\237/20231121TAB\346\240\217\345\210\207\346\215\242.md"	
@@ -0,0 +1,124 @@
+```html
+<!DOCTYPE html>
+<html lang="en">
+
+<head>
+  <meta charset="UTF-8" />
+  <meta http-equiv="X-UA-Compatible" content="IE=edge" />
+  <meta name="viewport" content="width=device-width, initial-scale=1.0" />
+  <title>tab栏切换</title>
+  <style>
+    * {
+      margin: 0;
+      padding: 0;
+    }
+
+    .tab {
+      width: 590px;
+      height: 340px;
+      margin: 20px;
+      border: 1px solid #e4e4e4;
+    }
+
+    .tab-nav {
+      width: 100%;
+      height: 60px;
+      line-height: 60px;
+      display: flex;
+      justify-content: space-between;
+    }
+
+    .tab-nav h3 {
+      font-size: 24px;
+      font-weight: normal;
+      margin-left: 20px;
+    }
+
+    .tab-nav ul {
+      list-style: none;
+      display: flex;
+      justify-content: flex-end;
+    }
+
+    .tab-nav ul li {
+      margin: 0 20px;
+      font-size: 14px;
+    }
+
+    .tab-nav ul li a {
+      text-decoration: none;
+      border-bottom: 2px solid transparent;
+      color: #333;
+    }
+
+    .tab-nav ul li a.active {
+      border-color: #e1251b;
+      color: #e1251b;
+    }
+
+    .tab-content {
+      padding: 0 16px;
+    }
+
+    .tab-content .item {
+      display: none;
+    }
+
+    .tab-content .item.active {
+      display: block;
+    }
+  </style>
+</head>
+<!-- 
+  服务器买,域名,买.域名要备案得到ICP 运动会三天,把事件搞定
+ -->
+<body>
+  <div class="tab">
+    <div class="tab-nav">
+      <h3>每日特价</h3>
+      <ul>
+        <li><a class="active" href="javascript:;" data-id="0">精选</a></li>
+        <li><a href="javascript:;" data-id="1">美食</a></li>
+        <li><a href="javascript:;" data-id="2">百货</a></li>
+        <li><a href="javascript:;" data-id="3">个护</a></li>
+        <li><a href="javascript:;" data-id="4">预告</a></li>
+      </ul>
+    </div>
+    <div class="tab-content">
+      <div class="item active"><img src="./images/tab00.png" alt="" /></div>
+      <div class="item"><img src="./images/tab01.png" alt="" /></div>
+      <div class="item"><img src="./images/tab02.png" alt="" /></div>
+      <div class="item"><img src="./images/tab03.png" alt="" /></div>
+      <div class="item"><img src="./images/tab04.png" alt="" /></div>
+    </div>
+  </div>
+  <script>
+    // 采取事件委托的形式 tab栏切换
+    // 获取ul
+    const ul = document.querySelector('ul');
+    // 获取全部图片
+    const imgs = document.querySelectorAll('.item')
+    // 添加事件
+    ul.addEventListener('mouseover',function(e){
+      // console.log(e.target.tagName);
+      if(e.target.tagName==='A'){
+        // 将其它A标签的红色去掉active
+        document.querySelector('li .active').classList.remove('active')
+        // 给当前A标签加上active
+        e.target.classList.add('active')
+
+        // 先去掉默认的active效果
+        document.querySelector('.tab-content .active').classList.remove('active');
+        // 给正确的图片加上active
+        // 通过自定义属性，先获得id
+        let i = e.target.dataset.id;
+        // 通过i去imgs去匹配
+         imgs[i].classList.add('active');
+
+      }
+    })
+  </script>
+</body>
+
+</html>
+```
\ No newline at end of file
