<html>
<head>
<script language=javascript>var t1 = new Date().getTime();</script>
</head><body onload='alert("打开该网页一共花出 "+ (new Date().getTime()-t1) +" 毫秒！")'>
<!-- <body onload='alert("打开该网页一共花出 "+ (new Date().getTime()-t1)/1000 +" 秒钟！")'> -->
<img src=http://expert.csdn.net/images/csdn.gif border=0>
</body>
</html>
<head>
<script language=javascript>var t1 = new Date().getTime();</script>
</head><body onload='alert("打开该网页一共花出 "+ (new Date().getTime()-t1) +" 毫秒！")'>
<!-- <body onload='alert("打开该网页一共花出 "+ (new Date().getTime()-t1)/1000 +" 秒钟！")'> -->
<img src=http://expert.csdn.net/images/csdn.gif border=0>
</body>
</html>
<HTML>
<SCRIPT LANGUAGE="JavaScript">
<!--
var oldtime;
oldtime = new Date();
function newtime(){
var newtime;
for(i=0;i<1500;i++){
for(j=0;j<1500;j++){}
}
newtime = new Date();
var a = newtime - oldtime;
document.getElementsByTagName("span").item(0).innerHTML = "開始時間：" + oldtime + "<br>"
+ "終了時間：" + newtime + "<br><br>" + "耗時：" + a + "毫秒" ;
}
//-->
</SCRIPT>
<HEAD>
<TITLE> New Document </TITLE>
</HEAD>
<BODY onload="newtime()">
<span></span>
</BODY>
</HTML>