javascript 技术页面加载需要的时间<html><head><script language=javascript>var t1 = new Date().getTime();</script></head>
<body οnlοad='alert("打开该网页一共花出 "+ (new Date().getTime()-t1) +" 毫秒！")'><img src="http://www.baidu.com/img/logo.gif" alt="百度logo.gif"/></body></html>
