请问大佬们 这个代码哪里错了``我检查不出来
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<style type="text/css">
*{
margin:0;
padding:0px;
}
ul{
list-style: none;
}
li{
width: 100px;
height: 100px;
background-color: yellow;
margin-bottom: 15px;
}
</style>
<script>
window.onload=function(){
var Li=document.getElementsByTagName('li');
var timer;
for(var i=0; i < Li.length;i++){
Li[i].timer=null;
Li[i],onmouseover=function(){
smove(this,500);
}
Li[i].onmouseout=function(){
smove( this,100);
}
}
}
function smove(obj,target){
clearInterval(obj.timer);
obj.timer=setInterval(function(){
var speed = (target-obj.offsetWidth)/2;
speed=speed>0?Math.ceil(speed):Math.floor(speed);
if(obj.offsetWidth==target){
clearInterval(obj.timer);
}
else
{
obj.style.width=obj.offsetWidth+speed+"px";
}
},30)
}
</script>
</head>
<body>
<ul>
<li></li>
<li></li>
<li></li>
<li></li>
<li></li>
<li></li>
<li></li>
</ul>
</body>
</html>
