<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd";>
<html xmlns="http://www.w3.org/1999/xhtml";>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>JS实现div自动滚动</title>
<style>
.ylp-show div{height:20px;}
</style>
</head>
<body>
<div id="show" style="overflow:hidden;height:40px;" class="ylp-show">
<div>aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa1</div>
<div>bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb2</div>
<div>ccccccccccccccccccccccccccccccccccccccccccccc3</div>
<div>ddddddddddddddddddddddddddddddddddddddddddddd4</div>
<div>eeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeee5</div>
<div>fffffffffffffffffffffffffffffffffffffffffffff6</div>
<div>ggggggggggggggggggggggggggggggggggggggggggggg7</div>
</div>
<script>
function startmarquee(lh,speed,delay){
var t;
var oHeight = 210; /**//** div的高度 **/
var p=false;
var o=document.getElementById("show");
var preTop = 0;
o.scrollTop = 0;
function start(){
t=setInterval(scrolling,speed);
o.scrollTop += 1;
}
function scrolling(){
if(o.scrollTop%lh!=0 && o.scrollTop%(o.scrollHeight-oHeight-1)!=0){
preTop = o.scrollTop;
o.scrollTop+=1;
if(preTop >= o.scrollHeight || preTop==o.scrollTop){
o.scrollTop = 0;
}
}else{
clearInterval(t);
setTimeout(start,delay);
}
}
setTimeout(start,delay);
}
startmarquee(20,20,1500);
/**//**startmarquee(一次滚动高度,速度,停留时间);**/
</script>
</body>
</html>