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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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+ #container{
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+ width: 590px;
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+ height: 470px;
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+ margin: 100px auto;
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+ position: relative;
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+ }
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+ .selected{
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+ display: none;
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+ }
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+ .choice{
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+ display: block;
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+ }
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+ #btns{
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+ position: absolute;
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+ right: 10px;
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+ bottom: 10px;
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+ }
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+ #btns li{
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+ width: 20px;
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+ height: 20px;
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+ background: aqua;
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+ float: left;
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+ color: white;
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+ text-align: center;
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+ line-height: 20px;
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+ border-radius: 10px;
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+ margin-right: 5px;
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+ }
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+ #btns .select{
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+ background: red;
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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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+ <div id="img-box">
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+ <img class="selected choice" src="image/1.jpg" alt="">
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+ <img class="selected" src="image/2.jpg" alt="">
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+ <img class="selected" src="image/3.jpg" alt="">
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+ <img class="selected" src="image/4.jpg" alt="">
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+ <img class="selected" src="image/5.jpg" alt="">
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+ </div>
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+ <ul id="btns">
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+ <li class="select">1</li>
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+ <li>2</li>
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+ <li>3</li>
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+ <li>4</li>
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+ <li>5</li>
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+ </ul>
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+ </div>
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+ <script>
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+ var btn = document.getElementsByTagName('li')
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+ var imgs = document.getElementsByClassName('selected')
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+
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+ for(var i=0;i<btn.length;i++){
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+ btn[i].index = i
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+ btn[i].onclick = function(){
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+ for(var j=0;j<btn.length;j++){
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+ btn[j].className = ''
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+ imgs[j].className = 'selected'
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+ }
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+ this.className = 'select'
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+ imgs[this.index].className = 'selected choice'
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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
