<!doctype>
<html>
<head>
<meta?charset?=?"utf-8">
<title>多物體運動</title>
<style?type="text/css">
*{margin:?0;padding:?0;}
ul,li{list-style:?none;}
ul?li{width:?200px;height:?50px;background:?#333;margin-bottom:?20px;}
</style>
<script?type="text/javascript">
window.onload?=?function(){
var?aLi?=?document.getElementsByTagName("li");
var?timer?=?null;
var?speed?=?0;
var?obj?=?3;
for(var?i?=?0;i<aLi.length;i++){
aLi[i].onmouseover?=?function(){
startMove(this,400);
}
aLi[i].onmouseout??=?function(){
startMove(this,200);
}
}
function?startMove(abj,iTarget){//obj表示多個當前的
? clearInterval(timer);
? timer?=?setInterval(function(){
? ?var?speed?=?(iTarget??-?abj.offsetWidth)/8;
? ?speed?=?speed>0?Math.ceil(speed):Math.floor(speed);//如果大于零向上取整，如果小于零就向下取整；
? ?if(obj.offsetWidth?==?iTarget){
? ? clearInterval(timer);
? ?}else{
? ? obj.style.width?=?abj.offsetWidth?+?speed?+?"px";
? ?}
? },30)
}
}
</script>
</head>
<body>
<div>
<ul>
<li></li>
<li></li>
<li></li>
</ul>
</div>
</body>
</html>
obj沒有定義
______________0
2016-02-22 17:37:52