本文实例讲述了jQuery实现的简单悬浮层功能。分享给大家供大家参考，具体如下：
运行效果图如下：
具体代码如下：
<!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=utf-8" />
<title>Test</title>
<script type="text/javascript" language="javascript" src="jquery-1.7.2.min.js"></script>
<script type="text/javascript" language="javascript" >
$(function() {
var timer, scrollTop, sideDiv = $('#fudong').appendTo('body');
$(window).scroll(function() {
timer && clearTimeout(timer);
scrollTop = $(this).scrollTop();
timer = setTimeout(function() {
sideDiv.animate({
top: scrollTop + 100 + 'px'
}, 600);
}, 200);
});
});
</script>
</head>
<body >
<div id="fudong" style="border:1px solid #454545; width:150px; height:400px; position: absolute; right: 20px; top: 100px;">
右侧悬浮层
</div>
</body>
</html>