JS现阶段系统时间 _JavaScript

JS当前系统时间
<!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=utf-8" />
<title>当前时间</title>
<script>
   function tick() {
   var hours, minutes, seconds, xfile;
   var intHours, intMinutes, intSeconds;
   var today, theday;
   today = new Date();
   function initArray(){
   this.length=initArray.arguments.length
   for(var i=0;i<this.length;i++)
   this[i+1]=initArray.arguments[i] }
   var d=new initArray(
   " 星期日",
   " 星期一",
   " 星期二",
   " 星期三",
   " 星期四",
   " 星期五",
   " 星期六");
   theday = today.getFullYear()+"年" + [today.getMonth()+1]+"月" +today.getDate()+"日" + d[today.getDay()+1];
   intHours = today.getHours();
   intMinutes = today.getMinutes();
   intSeconds = today.getSeconds();
   if (intHours == 0) {
   hours = "12:";
   xfile = " 午夜 ";
   } else if (intHours < 12) {
   hours = intHours+":";
   xfile = " 上午 ";
   } else if (intHours == 12) {
   hours = "12:";
   xfile = " 正午 ";
   } else {
   intHours = intHours - 12
   hours = intHours + ":";
   xfile = " 下午 ";
   }
   if (intMinutes < 10) {
   minutes = "0"+intMinutes+":";
   } else {
   minutes = intMinutes+":";
   }
   if (intSeconds < 10) {
   seconds = "0"+intSeconds+" ";
   } else {
   seconds = intSeconds+" ";
   }
   timeString = theday+xfile+hours+minutes+seconds;
   Clock.innerHTML = timeString;
   window.setTimeout("tick();", 100);
   }
   window.onload = tick;
</script>
</head>

<body>
<span id="Clock" style="font-size: 12px; COLOR: #777;"></span>
</body>
</html>