第一步
在head中写入meta
<head><meta charset="UTF-8" http-equiv="Refresh" content="1">
</head>第二步在head中写入函数
<head><meta charset="UTF-8" http-equiv="Refresh" content="1"><script language="JavaScript">function showtime(){var now=new Date;var str=now.toLocaleString();document.getElementById("mytime").innerHTML="<font color='#f0ffff' style='font-size: 40pt'>"+str+"</font>"}</script>
</head>第三步body中写入div
<body >
<div id="mytime"></div>
</body>第四步在body中写入事件
<body bgcolor="#f5f5dc" onload="showtime()">
<div id="mytime"></div>
</body>
