<!DOCTYPE html>
<html lang="zh">
<head>
<meta charset="UTF-8" />
<meta name="viewport" content="width=device-width, initial-scale=1.0" />
<meta http-equiv="X-UA-Compatible" content="ie=edge" />
<title>Document</title>
</head>
<style>
div{width: 10px;height: 20px;background-color: red;position: absolute;}
</style>
<body>
<div></div>
<div></div>
<div></div>
<div></div>
<div></div>
<div></div>
<div></div>
<div></div>
<div></div>
<div></div>
<div></div>
</body>
<script type="text/javascript">
function getPos(ev){
var scrollTop=document.documentElement.scrollTop || document.body.scrollTop;
var scrollLeft=document.documentElement.scrollLeft || document.body.scrollLeft;
return {x:ev.clientX+scrollLeft,y:ev.clientY+scrollTop }
}
document.onmousemove=function(ev){
var oDiv=document.getElementsByTagName('div');
var oEvent=ev || event;
var pos=getPos(oEvent);
for(var i=oDiv.length-1;i>0;i--){
oDiv[i].style.left=oDiv[i-1].offsetLeft+'px';
oDiv[i].style.top=oDiv[i-1].offsetTop+'px';
}
oDiv[0].style.left=pos.x+'px';
oDiv[0].style.top=pos.y+'px';
}
</script>
</html>
