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@@ -0,0 +1,69 @@
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+<!DOCTYPE html>
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+<html lang="en">
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+<head>
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+ <meta charset="UTF-8">
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+ <meta http-equiv="X-UA-Compatible" content="IE=edge">
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+ <meta name="viewport" content="width=device-width, initial-scale=1.0">
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+ <title>Document</title>
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+ <style>
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+ *{
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+ margin: 0;
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+ padding: 0;
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+ }
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+ ul{
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+ list-style: none;
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+ }
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+ #btn{
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+ overflow: hidden;
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+ }
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+ #btn li {
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+ width: 50px;
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+ height: 30px;
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+ background: aquamarine;
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+ text-align: center;
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+ line-height: 30px;
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+ border: 1px solid #CCC;
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+ border-radius: 10px;
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+ float: left;
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+ }
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+ #btn .selected{
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+ background: orange;
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+ color: white;
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+ }
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+ #div1{
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+ width: 350px;
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+ height: 200px;
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+ border: 1px solid #ccc;
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+ }
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+ </style>
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+</head>
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+<body>
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+ <div id="container">
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+ <ul id="btn">
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+ <li class="selected">时事</li>
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+ <li>新闻</li>
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+ <li>体育</li>
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+ </ul>
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+ <div id="div1">
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+ <div>时事内容</div>
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+ <div>新闻内容</div>
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+ <div>体育内容</div>
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+ </div>
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+ </div>
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+ <script>
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+ var btn = document.getElementById('btn')
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+ var btns = btn.getElementsByTagName('li')
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+
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+ for(var i=0;i<btns.length;i++){
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+ btns[i].onclick = function(){
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+ //this 点谁就是谁
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+ for(var j=0;j<btns.length;j++){
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+ btns[j].className = ''
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+ }
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+ this.className = 'selected'
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+ }
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+ }
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+
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+ </script>
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+</body>
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+</html>
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zsydgithub