javascript实现DIV层滑动弹出动画效果

<!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=gb2312" />
<title>无标题文档</title>
<style type="text/css">
* { font-size:12px; font-family:Verdana,宋体; }
html { margin:0px; padding:0px; overflow:auto; }
body { margin:0px; padding:15px; background-color:buttonface; }
#w { position:absolute; 1px; height:1px; overflow:hidden; border:2px groove #281; cursor:default; -moz-user-select:none; }
#t { line-height:20px; height:20px; 480px; overflow:hidden; background-color:#27C; color:white; font-weight:bold; border-bottom:1px outset blue; text-align:center; }
#winBody { height:248px; 480px; overflow-x:hidden; overflow-y:auto; border-top:1px inset blue; padding:10px; text-indent:10px; background-color:white; }
</style>
</head>
<body>
<div id="w">
<div id="t">李佳培.中国</div>
<div id="winBody">Hello world</div>
</div>
</body>
<script type="text/javascript">
(function(o,t,i,j,s){
i=j=1;s=o;
t=setInterval(function(){
o.offsetWidth<480?(s.width=(482-600/++i<<0)+"px"):(o.offsetHeight<270?s.height=(272-400/++j<<0)+"px":clearInterval(t));
},15);
})(document.getElementById("w"));
</script>
</html>

原文地址:https://www.cnblogs.com/snowbaby-kang/p/3710876.html