<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title>多物体运动</title>
<style>
*{margin: 0;padding: 0}
.li1{width:100px;height:100px; margin-bottom: 50px;background-color: teal;}
.li2{width:100px;height:100px; margin-bottom: 50px;background-color: teal;}
.li3{width:100px;height:100px; margin-bottom: 50px;background-color: teal;}
</style>
<script>
window.onload=function(){
var lis=document.getElementsByTagName('li');
for(var i=0;i<lis.length;i++){
lis[i].timer=null;
lis[i].onmouseover=go(this,400);
lis[i].onmouseout=go(this,100);
}
}
function go(obj,target)
{
clearInterval(obj.timer);
obj.timer=setInterval(function(){
var speed=(target-obj.offsetWidth)/30;
speed=speed<0?Math.floor(speed):Math.ceil(speed);
if(obj.offsetWidth==target){
clearInterval(obj.timer);
}
else{
obj.style.width=obj.offsetWidth+speed+'px';
}
},30);
}
</script>
</head>
<body>
<li></li>
<li></li>
<li></li>
</body>
</html>风筝_0010
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