JS左右无缝滚动（一般方法+面向对象方法）
作者：
其实不管是一般方法还是面向对象的方法都还有很多可以改进的地方，有需要的先将就着用吧
复制代码 代码如下:
<!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=GBK" />
<title>JS左右无缝滚动（一般方法+面向对象方法）</title>
<style type="text/css">
.clearfix:after {content:"."; display:block; height:0; visibility:hidden; clear:both; }
.clearfix { *zoom:1; }
body{background:gray;}
#wrap{width:810px; height:160px;
border:1px solid black;
position:relative;
left:50%;
top:50%;
margin-left:-410px;
margin-top:200px;
background:#fff;
overflow:hidden;}
#wrap ul{margin:0px;
padding:0px;
position:absolute;
top:0px;
left:0px;}
#wrap ul li{ list-style:none; float:left;margin:5px 10px;width:265px;}
#wrap ul li img{ border:1px black solid; padding:10px;}
</style>
<!--script type="text/javascript">
window.onload=function(){ //一般方法
var wrap=document.getElementById("wrap");
var wrap_ul=wrap.getElementsByTagName("ul")[0];
var wrap_li=wrap.getElementsByTagName("li");
wrap_ul.innerHTML+=wrap_ul.innerHTML;
wrap_ul.style.width=(wrap_li[0].offsetWidth+20)*wrap_li.length+"px";
Autoscroll=setInterval(scroll,100);
function scroll(){
wrap_ul.style.left=wrap_ul.offsetLeft-3+"px"; //这里因为ie对offsetLeft的解析不一样，所以ie下必须减大于等于3的数
if(wrap_ul.offsetLeft<=-wrap_ul.offsetWidth/2){
wrap_ul.style.left="0px";
}else if(wrap_ul.offsetLeft>=0){
wrap_ul.style.left=-wrap_ul.offsetWidth/2+"px";
}
}
wrap.onmouseover=function(){
clearInterval(Autoscroll);
}
wrap.onmouseout=function(){
Autoscroll=setInterval(scroll,100);
}
}
</script-->
<script type="text/javascript">
function Slide(obj,direction,speed){ //面向对象的方法，可以自由控制方向，speed=>3 ie下可以
this.container=document.getElementById(obj);
this.content=this.container.getElementsByTagName("ul")[0];
this.lis=this.content.getElementsByTagName("li");
this.content.innerHTML+=this.content.innerHTML;
this.content.style.width=(this.lis[0].offsetWidth+20)*this.lis.length+"px";
var that=this
if(direction=="left"){
this.speed=-speed
}else if(direction=="right"){
this.speed=speed
}
Slide.prototype.scroll=function(){
this.content.style.left=this.content.offsetLeft+this.speed+"px";
if(this.content.offsetLeft <= -this.content.offsetWidth/2){
this.content.style.left ="0px";
}else if(this.content.offsetLeft >=0){
this.content.style.left = -this.content.offsetWidth/2 + "px";
}
}
this.time=setInterval(function(){that.scroll()},100);
this.container.onmouseover=function(){
clearInterval(that.time);
}
this.container.onmouseout=function(){
that.time=setInterval(function(){that.scroll()},100);
}
}
</script>
<script type="text/javascript">
window.onload=function(){new Slide("wrap","left",5)}
</script>
</head>
<body>
<div id="wrap">
<ul class="clearfix">
<li><a href="#"><img src="http://www.baidu.com/img/baidu_sylogo1.gif" /></a></li>
<li><a href="#"><img src="http://www.baidu.com/img/baidu_sylogo1.gif" /></a></li>
<li><a href="#"><img src="http://www.baidu.com/img/baidu_sylogo1.gif" /></a></li>
<li><a href="#"><img src="http://www.baidu.com/img/baidu_sylogo1.gif" /></a></li>
<li><a href="#"><img src="http://www.baidu.com/img/baidu_sylogo1.gif" /></a></li>
</ul>
</div>
</body>
</html>