代码:
<html>
<head>
<title>让div动的测试</title>
<script language="javascript">
X=3;
Y=0;
divX=0;
divY=0;
function Move(){
divX+=X;
divY+=Y; div1.style.left=divX+"px";
div1.style.top=divY +"px"; if(divX+div1.offsetWidth>=document.body.clientWidth|div1.style.left<=0){
X=-X;
}
}
setInterval("Move()",10);
</script>
</haed>
<body>
<div id="div1" style="width:100px;height:100px;background-color:red;position:absolute">
碰撞
</div>
</body>
</html>