用JS获取当前时间

<script language="javascript">
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.getYear()+"年" + [today.getMonth()+1]+"月" +today.getDate() +" "+ 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>

<div id="Clock" style="font-size:12px"></div>