scrollTop无缝滚动 

 1 <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
 2 <html xmlns="http://www.w3.org/1999/xhtml">
 3 <head>
 4 <meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
 5 <title>无标题文档</title>
 6 <style>
 7 *{margin:0;padding:0;}
 8 ul{list-style:none;}
 9 #box{width:100px;height:200px;overflow:hidden;margin:30px;}
10 .main{height:800%}
11 </style>
12 <script>
13 window.onload=function()
14 {
15     var oBox = document.getElementById('box');
16     var oScroll = document.getElementById('scroll');
17     var timer = null;
18     oScroll.innerHTML+=oScroll.innerHTML;
19     function marquee()
20     {
21          if(oScroll.offsetHeight/2 - oBox.scrollTop <= 0)
22         {
23              oBox.scrollTop -= oScroll.offsetHeight;
24         }
25         else
26         {
27                oBox.scrollTop++;
28              document.title=oBox.scrollTop;
29         };
30     };
31     timer = setInterval(marquee,20);
32 };
33 
34 </script>
35 </head>
36 
37 <body>
38 <div id="box">
39 <div class="main">
40  <ul id="scroll">
41   <li>dasdasdasd</li>
42   <li>2222222222</li>
43   <li>dasdasdasd</li>
44   <li>111111111111</li>
45   <li>dasdasdasd</li>
46   <li>dasdasdasd</li>
47   <li>33333333333</li>
48   <li>dasdasdasd</li>
49   <li>44444444444</li>
50   <li>dasdasdasd</li>
51  </ul>
52 </div>
53 </div>
54 </body>
55 </html>

 

posted @ 2013-08-14 18:01  The0ne  阅读(150)  评论(0)    收藏  举报