<!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>无标题文档</title>
<style>
div{ 100px; height:100px; background-color:red; margin-top:20px;}
</style>
<script type="text/javascript">
window.onload=function(){
var oDiv=document.getElementsByTagName('div');
//int i=0;
//for(i=0;i<oDiv.length;i++){
//}
oDiv[0].onmouseover=function(){
StarMove(this,300,'width');
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oDiv[0].onmouseout=function(){
StarMove(this,100,'width');
}
oDiv[1].onmouseover=function(){
StarMove(this,150,'height');
}
oDiv[1].onmouseout=function(){
StarMove(this,100,'height');
}
}
//获取兼容的对应属性值
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if(obj.currentStyle){
return obj.currentStyle[attr];
}
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return getComputedStyle(obj,false)[attr];
}
}
function StarMove(obj,iTarget,attr){
clearInterval(obj.timer);//清掉对应的 对象的定时器
obj.timer=setInterval(function(){
var iCur=parseInt(getStyle(obj,attr));
var iSpeed=(iTarget-iCur)/8;
iSpeed=iSpeed>0?Math.ceil(iSpeed):Math.floor(iSpeed);
if(iCur==iTarget){
clearInterval(obj.timer);
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else{
obj.style[attr]=iCur+iSpeed+'px';
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},30);
}
</script>
</head>
<body>
<div></div>
<div></div>
<div></div>
<div></div>
</body>
</html>