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>
