无缝滚动
<!DOCTYPE html>
<html>
<head>
<title></title>
<style type="text/css">
*{padding: 0;margin: 0}
#div1{
height: 200px;
width: 800px;
margin-left: auto;
margin-right: auto;
margin-top: 100px;
position: relative;
background-color: red;
overflow: hidden;
}
#div1 ul{
position: absolute;
left: 0;
top: 0;
}
#div1 ul li{
float: left;
list-style: none;
}
#div1 ul img{
height: 200px;
width: 200px;
}
</style>
</head>
<body>
<a href="#">LEFT</a>
<a href="#">RIGHT</a>
<div id="div1">
<ul>
<li><img src="img/1.jpg"></li>
<li><img src="img/2.jpg"></li>
<li><img src="img/3.jpg"></li>
<li><img src="img/4.jpg"></li>
</ul>
</div>
<script type="text/javascript">
window.onload=function () {
var oDiv=document.getElementById('div1');
var oUl=oDiv.getElementsByTagName('ul')[0];
var aLi=oUl.getElementsByTagName('li');
var speed=-2;
oUl.innerHTML=oUl.innerHTML+oUl.innerHTML;
oUl.style.width=aLi[0].offsetWidth*aLi.length+'px';
function move()
{
if(oUl.offsetLeft<-oUl.offsetWidth/2)
{
oUl.style.left='0';
}
if(oUl.offsetLeft>0)
{
oUl.style.left=-oUl.offsetWidth/2+'px';
}
oUl.style.left=oUl.offsetLeft+speed+'px';
};
var timer=setInterval(move, 30);
oDiv.onmouseover=function()
{
clearInterval(timer);
};
oDiv.onmouseout=function()
{
timer=setInterval(move, 30);
};
document.getElementsByTagName('a')[0].onclick=function()
{
speed=-2;
};
document.getElementsByTagName('a')[1].onclick=function()
{
speed=2;
};
};
</script>
</body>
</html>
