本文实例讲述了JS实现简单的文字无缝上下滚动功能。分享给大家供大家参考，具体如下：&
本文实例讲述了JS实现简单的文字无缝上下滚动功能。分享给大家供大家参考，具体如下：
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<meta name="author" content="" />
<title>文字列表无缝滚动代码</title>
<style type="text/css">
*{
margin:0px;
padding:0px;
border:0px;
}
body{font-size:12px}
#demo{
overflow:hidden;
height:80px;
width:280px;
margin:90px auto;
position:relative;
}
#demo1{
height:auto;
text-align:left;
}
#demo2{
height:auto;
text-align:left;
}
#demo1 li{
list-style-type:none;
height:22px;
text-align:left;
text-indent:15px;
}
#demo2 li{
list-style-type:none;
height:22px;
text-align:left;
text-indent:15px;
}
</style>
</head>
<body>
<div id="demo">
<ul id="demo1">
<li>1</li>
<li>2</li>
<li>3</li>
<li>4</li>
<li>5</li>
<li>6</li>
<li>7</li>
</ul>
<div id="demo2"></div>
</div>
<script type="text/javascript">
var speed=40
// 向上滚动
var demo=document.getElementById("demo");
var demo2=document.getElementById("demo2");
var demo1=document.getElementById("demo1");
demo2.innerHTML=demo1.innerHTML
function Marquee(){
if(demo.scrollTop>=demo1.offsetHeight){
demo.scrollTop=0;
}
else{
demo.scrollTop=demo.scrollTop+1;
}
}
var MyMar=setInterval(Marquee,speed)
demo.onmouseover=function(){clearInterval(MyMar)}
demo.onmouseout=function(){MyMar=setInterval(Marquee,speed)}
//向下滚动
// demo2.innerHTML=demo1.innerHTML
// demo.scrollTop=demo.scrollHeight
// function Marquee2(){
// if(demo1.offsetTop-demo.scrollTop>=0)
// demo.scrollTop+=demo2.offsetHeight
// else{
// demo.scrollTop--
// }
// }
// var MyMar2=setInterval(Marquee2,speed)
// demo.onmouseover=function() {clearInterval(MyMar2)}
// demo.onmouseout=function() {MyMar2=setInterval(Marquee2,speed)}
</script>
</body>
</html>
感兴趣的朋友可以使用在线HTML/CSS/JavaScript代码运行工具：http://tools.jb51.net/code/HtmlJsRun测试上述代码运行效果。
JS 文字 滚动