纯js实现，完整代码如下：
<!doctype html> <html lang="en"> <head> <meta http-equiv="Content-Type" content="text/html; charset=utf-8" /> <meta name="keywords" content="关键字1,关键字2" /> <meta name="Description" content="描述信息" /> <title>循环滚动</title> <!--CSS/JS--> <style type="text/css"> *{margin:0;padding:0;} ul,li{list-style:none;display:block;} #scrollBox{height:150px;width:300px;margin:100px auto;background:#f09;overflow:hidden;} #scrollBox #con1,#con2{width:280px;float:left;} #scrollBox li{height:15px;line-height:15px;text-align:center;} </style> </head> <body> <!--div--> <div id="scrollBox"> <ul id="con1"> <li>我是测试内容1！！<li> <li>我是测试内容2！！<li> <li>我是测试内容3！！<li> <li>我是测试内容4！！<li> <li>我是测试内容5！！<li> <li>我是测试内容6！！<li> <li>我是测试内容7！！<li> <li>我是测试内容8！！<li> <li>我是测试内容9！！<li> </ul> <ul id="con2"></ul> </div> <script type="text/javascript"> var area =document.getElementById('scrollBox'); var con1 = document.getElementById('con1'); var con2 = document.getElementById('con2'); con2.innerHTML=con1.innerHTML; function scrollUp(){ if(area.scrollTop>=con1.offsetHeight){ area.scrollTop=0; }else{ area.scrollTop++ } } var time = 50; var mytimer=setInterval(scrollUp,time); area.onmouseover=function(){ clearInterval(mytimer); } area.onmouseout=function(){ mytimer=setInterval(scrollUp,time); } </script> </body> </html>
预览效果请点击：我的github