js 常用时间日期函数

// js 常用时间日期函数
function load(){
var time = new Date( ); //获得当前时间
var year = time.getFullYear();   //获得年
var month = (time.getMonth()+1);   //获得月份 0-11
if(month<10){
  month = '0' + month;
}
var ri = time.getDate();       //获得日期 1-31
if(ri<10){
  ri = '0' + ri;
}
var hour = time.getHours( );   //获得小时 0-23
var minute = time.getMinutes( ); //获得分钟 0-59
if(minute<10){
  minute = "0"+minute;
}
var second = time.getSeconds( );   //获得秒 0-59
if(second<10){
  second = "0" + second;
}
//var hm = time.getMilliseconds();   获得毫秒 0-999
var day = time.getDay();    //获得星期 0-6
document.getElementById("now_time").style.color = '#2A7EB7'; //改变了颜色
switch(day){
  case 0:
   day = "星期日";
   if(day == "星期日"){
    document.getElementById("now_time").style.color = '#F00'; //改变了颜色
   }
   break;
  case 1:
   day = "星期一";
   break;
  case 2:
   day = "星期二";
   break;
  case 3:
   day = "星期三";
   break;
  case 4:
   day = "星期四";
   break;
  case 5:
   day = "星期五";
   break;
  case 6:
   day = "星期六";
   if(day == "星期六"){
    document.getElementById("now_time").style.color = '#F00'; //改变style里面颜色的属性
   }
   break;
}

time =year + "年 "+ month +"月"+ri+"日 "+ hour+":"+minute+":"+second +" "+day;
document.getElementById("now_time").innerHTML = time;
//var time = setTimeout("load()",1000); //setTimeout()小 setInterval()大看看CUP使用率
}
var time = setInterval("load()",1000);

补充：网页制作,设计基础