使用JavaScript怎么实现一个列表自动滚动效果
使用JavaScript怎么实现一个列表自动滚动效果？很多新手对此不是很清楚，为了帮助大家解决这个难题，下面小编将为大家详细讲解，有这方面需求的人可以来学习下，希望你能有所收获。
具体如下：
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>Title</title>
<style type="text/css">
#box{width:260px;height:100px;margin:0 auto;border:2px solid red;overflow: hidden}
ul{padding:0;margin:0;list-style: none;overflow: hidden}
ul li{height:24px;line-height: 24px;padding-left:10px;}
a{text-decoration: none;color:#000;}
a:hover{color:#f00}
</style>
</head>
<body>
<div id="box">
<ul id="con1" onMouseOut="Up()" onMouseOver="Stop()">
<li><a href="#" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" >1,课程html</a> </li>
<li><a href="#" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" >2,课程css</a> </li>
<li><a href="#" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" >3,课程js</a> </li>
<li><a href="#" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" >4,课程jquery</a> </li>
<li><a href="#" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" >5,课程html5</a> </li>
<li><a href="#" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" >6,课程css3</a> </li>
<li><a href="#" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" >7,课程hp</a> </li>
<li><a href="#" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" >8,课程bpootstrap</a> </li>
<li><a href="#" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" >9,课程apicloud</a> </li>
</ul>
<ul id="con2"></ul>
</div>
</body>
<script type="text/javascript">
var box=document.getElementById("box");
var con1=document.getElementById("con1");
var con2=document.getElementById("con2");
var s=document.getElementsByTagName("a");
var speed=50;
con2.innerHTML=con1.innerHTML;
function ScrollUp(){
if( box.scrollTop>=con1.scrollHeight){
box.scrollTop=0;
}else
box.scrollTop++;
}
var i=setInterval("ScrollUp()",speed);
function Stop(){
clearInterval(i);
}
function Up(){
i=setInterval("ScrollUp()",speed);
}
</script>
</html>
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