<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>多物体 缓冲动画</title>
<style>
ul,li{
list-style:none;
}
ul li{
width:200px;
height:100px;
background: yellow;
margin-bottom: 20px;
}
</style>
<script>
window.onload=function(){
var aLi=document.getElementsByTagName('li');
for(var i=0;i<aLi.length;i++){
aLi[i].timer=null;
aLi[i].onmouseover=function(){
startMove(this,400);
};
aLi[i].onmouseout=function(){
startMove(this,200);
};
}
};
function startMove(obj,iTarget){
clearInterval(obj.timer);
obj.timer=setInterval(function(){
var speed=(iTarget-obj.offsetWidth)/8;
speed = speed>0?Math.ceil(speed):Math.floor(speed);
if(obj.offsetWidth==iTarget){
clearInterval(obj.timer);
}else{
obj.style.width=obj.offsetWidth+speed+'px';
}
},30)
}
</script>
</head>
<body>
<ul>
<li></li>
<li></li>
<li></li>
</ul>
</body>
</html>
