代码如下：
<!DOCTYPE html PUBLIC \"-//W3C//DTD XHTML 1.0 Transitional//EN\" \"http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd\">
<html xmlns=\"http://www.w3.org/1999/xhtml\">
<head>
<meta http-equiv=\"Content-Type\" content=\"text/html; charset=gb2312\" />
<title>无标题文档</title>
<script language=Javascript>
function time(){
//获得显示时间的div
t_div = document.getElementById(\'showtime\');
var now=new Date()
//替换div内容
t_div.innerHTML = \"现在是\"+now.getFullYear()
+\"年\"+(now.getMonth()+1)+\"月\"+now.getDate()
+\"日\"+now.getHours()+\"时\"+now.getMinutes()
+\"分\"+now.getSeconds()+\"秒\";
//等待一秒钟后调用time方法，由于settimeout在time方法内，所以可以无限调用
setTimeout(time,1000);
}
</script>
</head>
<body onload=\"time()\">
<div id=\"showtime\"></div>
<p>查找更多代码，请访问：<a href=\"http://www.xx8g.com\" target=\"_blank\">小高教学网</a></p>
</body>
</html>
