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<!DOCTYPE HTML> <html> <head> <meta http-equiv="content-type" charset="utf-8" /> <meta http-equiv="content-type" content="text/html" /> <title>demo</title> </head> <style type="text/css"> *{margin:0;padding:0;} ul,li,img{margin:0;padding:0;border:0;list-style-type:none;} #list{height:250px;list-style-type:none;overflow:hidden;} #luanpo{max-width:600px;height:200px;border:1px solid #CCC;margin:0 auto;position:relative;overflow:hidden;} #imgs li{float:left;height:200px;width:600px;} #imgs{height:200px;background:#ddd;position:absolute;} .a{background:red;} .b{background:yellow;} #num{overflow:auto;position:absolute;right:0;bottom:0;} #num li{float:left;height:30px;width:30px;text-align:center;line-height:30px;border:1px solid #CCC;margin-left:10px;cursor:pointer;z-index:2222;} </style> <body> <div id="luanpo"> <ul id="imgs"> <li>a</li> <li>b</li> <li>c</li> <li>d</li> </ul> <ul id="num"> <li class="a">1</li> <li class="b">2</li> <li class="b">3</li> <li class="b">4</li> </ul> </div> <script type="text/javascript"> var imgs=document.getElementById(‘imgs‘).getElementsByTagName(‘li‘); var nums=document.getElementById("num").getElementsByTagName("li"); var luanpo=document.getElementById("luanpo"); var oimg=document.getElementById(‘imgs‘); var iNow=0; var dt=null; oimg.style.width=imgs.length*imgs[0].offsetWidth+"px"; function tab(){ for(var i=0;i<nums.length;i++){ nums[i].index=i; nums[i].onclick=function(){ clearInterval(dt); iNow=this.index; for(var i=0;i<nums.length;i++){ nums[i].className="b"; } this.className="a"; oimg.style.left=-(imgs[0].offsetWidth*iNow)+"px"; //这边可以加上我前面所写的那个缓动框架 } nums[i].onmouseout=function(){ start(); } } } function start(){ clearInterval(dt); dt=setInterval(function(){ if(iNow>nums.length-2){ iNow=0; }else{ iNow++; } for(var k=0;k<nums.length;k++){ if(iNow==nums[k].index){nums[k].className=‘a‘;}else{nums[k].className=‘b‘;} } oimg.style.left=-(imgs[0].offsetWidth*iNow)+"px"; //这边可以加上我前面所写的那个缓动框架 },3000); tab(); } start(); </script> </body> </html>
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原文地址：http://www.cnblogs.com/lanyueff/p/5006558.html
