Js完美框架案例中，不设置鼠标移出事件时，鼠标重复经过物体，物体会不停变大。代码有什么问题吗？
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title>完美框架</title>
<style type="text/css">
body{
margin: 0;
padding: 0;
}
ul,li{
list-style:none;
}
ul li{
width: 100px;
height:100px;
background:yellow;
margin-bottom:20px;
filter:alpha(opacity:30);
opacity:0.3;
}
</style>
<script src="startMove.js"></script>
<script>
window.onload=function(){
var oLis=document.getElementsByTagName("li");
for(var i=0;i<oLis.length;i++){
oLis[i].onmouseover=function(){
startMove(this,{width:300,height:300,opacity:100});
}
oLis[i].onmouseout=function(){
startMove(this,{width:100,height:100,opacity:30});
}
}
}
</script>
</head>
<body>
<ul>
<li></li>
<li></li>
<li></li>
</ul>
</body>
</html>
引入的Js代码：
function getStyle(obj,attr){
if(obj.currentStyle){
return obj.currentStyle[attr];
}
else{return getComputedStyle(obj,false)[attr];
}
}
function startMove(obj,json,fn){
clearInterval(obj.timer);
obj.timer=setInterval(function(){
for(var attr in json){
var icur=0;
var flag=true;
if(attr=="opacity"){
icur=Math.round(parseFloat(getStyle(obj,attr))*100);
}
else{
icur=parseInt(getStyle(obj,attr));
}
var speed=(json[attr]-icur)/8;
speed=speed>0?Math.ceil(speed):Math.floor(speed);
if(icur!=json[attr])
{flag=false;
}
if(attr=="opacity"){
obj.style.filter="alpha:(opacity:"+icur+speed+")";
obj.style.opacity=(icur+speed)*100;
}
else{
obj.style[attr]=icur+speed+"px";
}
if(flag){
clearInterval(obj.timer);
if(fn){fn();
}
}
}
},30)
}
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Html/CSS
JavaScript