<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title></title>
<script type="text/javascript">
window.onload = function()
{
var aa = document.getElementById("aa");
var width = document.documentElement.clientWidth; //抓取浏览器显示的宽度和高度 和dom一样
var height = document.documentElement.clientHeight;
aa.onmousemove = function()
{
var t = Math.floor(Math.random()*(height-100-0+1)+0);
var l = Math.floor(Math.random()*(height-100-0+1)+0);
aa.style.left = t + 'px';
aa.style.top = l + 'px';
}
}
</script>
</head>
<body>
<img src='img/1.jpg' width="100px" height="100px" id="aa" style="position: absolute; left: 0; top: 0;"/>
</body>
</html>
