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<!DOCTYPE html> <html> <head> <title>作业</title> <meta http-equiv="content-type" content="text/html; charset=UTF-8"> <style type="text/css"> div{ width: 100px; height: 100px; border:1px solid black; position: absolute; left: 300px; top: 200px; } </style> <script type="text/javascript"> window.onload=function(){ window.setInterval("show()", 500); } function show(){ var left=Math.random()*1000; var top=Math.random()*500; document.getElementById("d").style.left=left+"px"; document.getElementById("d").style.top=top+"px"; } </script> </head> <body> <div id="d"> <img src="1.jpg" width="100" height="100"/> </div> </body> </html>
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原文地址：http://www.cnblogs.com/spadd/p/4192602.html
