<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title>无缝滚动</title>
<style type="text/css">
* {
margin: 0;
padding: 0;
}
#div {
position: relative;
width: 713px;
height: 200px;
background: yellow;
margin: 100px auto;
overflow: hidden;
}
#div ul {
border: 1px red solid;
position: absolute;
left: 0;
top: 0;
}
#div ul li {
list-style: none;
float: left;
width: 178px;
height: 108px;
}
#div ul li img {
width: 178px;
height: 108px;
}
</style>
<script type="text/javascript">
window.onload = function() {
var oDiv = document.getElementById('div');
var oUl = oDiv.getElementsByTagName('ul')[0];
var oLi = oDiv.getElementsByTagName('li');
oUl.innerHTML = oUl.innerHTML + oUl.innerHTML;
oUl.style.width = oLi[0].offsetWidth * oLi.length + 'px';
setInterval(function() {
if (oUl.offsetLeft > 0) {
oUl.style.left = -parseInt(oUl.offsetWidth) / 2 + 'px';
}
if (oUl.offsetLeft < -parseInt(oUl.offsetWidth) / 2) {
oUl.style.left = 0;
}
oUl.style.left = oUl.offsetLeft + 2 + 'px';
}, 30)
}
</script>
</head>
<body>
<div id="div">
<ul>
<li><img src='images/b1.jpg'></li>
<li><img src='images/b2.jpg'></li>
<li><img src='images/b3.jpg' /></li>
<li><img src='images/b4.jpg'></li>
</ul>
</div>
</body>
</html>
