now=new Date();
hours = now.getHours(); //得到小时
minutes = now.getMinutes(); //得到分钟
seconds = now.getSeconds(); //得到秒
year=now.getYear(); //得到年份
month=now.getMonth()+1; //得到月份
date=now.getDate(); //得到日期
day=now.getDay(); //得到星期数
一个显示时间日期的函数：
function clock()
{
var timeStr, dateStr;
now = new Date();
// time
hours = now.getHours();
minutes = now.getMinutes();
seconds = now.getSeconds();
if(hours < 10)
timeStr = "0"+hours;
else timeStr=hours;
if(minutes < 10)
timeStr+=":0"+minutes;
else timeStr+=":"+minutes;
if(seconds < 10)
timeStr+=":0"+seconds;
else timeStr+=":"+seconds;
document.clock.time.value=timeStr;
//date
year=now.getYear();
month=now.getMonth()+1;
date=now.getDate();
dateStr=year;
if(month<10)
dateStr+="/0"+month;
else dateStr+="/"+month;
if(date<10)
dateStr+="/0"+date;
else dateStr+="/"+date;
document.clock.date.value=dateStr;
Timer=setTimeout("clock()",1000);
}