<!DOCTYPE html>
<html>
<head>
 <title>獲取時間</title>
 <script type="text/javascript">
 window.onload = function(){
  showTime();
 }
 function showTime(){
  var myDate = new Date();
  var year = myDate.getFullYear();
  var month = myDate.getMonth() + 1;
  var date = myDate.getDate();
  var dateArr = ["日","一",'二','三','四','五','六'];
  var day = myDate.getDay();
  var hours = myDate.getHours();
  var minutes = formatTime(myDate.getMinutes());
  var seconds = formatTime(myDate.getSeconds());
  var systemTime = document.getElementById("time");
  systemTime.innerHTML = " " + year + "年" + month +"月" + date + "日" + " 星期" + dateArr[day] + " " + hours + ":" + minutes + ":" + seconds;
  setTimeout("showTime()",500);
 }
 //格式化時間：分秒。
 function formatTime (i){
  if(i < 10){
   i = "0" + i;
  }
  return i;
 }
 </script>
</head>
<body>
 <div id ='time'></div>
</body>
</html>

顯示結果：

2、倒計時時差

講解gettime()等方法，及計算時間的方法，學會時間相差的天數。

<!DOCTYPE html>
<html>
<head>
 <title>獲取時間</title>
 <script type="text/javascript">
  window.onload = function(){
   deadTime();
  }
  function deadTime(){
   var nowTime = new Date();
   var finalTime = new Date("2015-11-11");
   var lefttime = (finalTime.getTime() - nowTime.getTime())/(1000*24*60*60);
   var date = Math.ceil(lefttime);
   document.getElementById("time").innerHTML = date;
  }
 </script>
</head>
<body>
 <div >距離雙十一還有：<span id ='time'></span>天</div>
</body>
</html>

顯示效果：

3、限時搶購

如何運用日期對象及方法，計算相差的天、時、分、秒的方法。

<!DOCTYPE html>
<html>
<head>
<title>團購——限時搶</title>
</head>
<body>
<div class="time"> <span id="LeftTime"></span></div>
</div>
<script>
function FreshTime()
{
 var endtime=new Date("2015/11/11,12:20:12");//結束時間
 var nowtime = new Date();//當前時間
 var lefttime=parseInt((endtime.getTime()-nowtime.getTime())/1000); 
 d=parseInt(lefttime/3600/24);
 h=parseInt((lefttime/3600)%24);
 m=parseInt((lefttime/60)%60);
 s=parseInt(lefttime%60);
 document.getElementById("LeftTime").innerHTML="距離活動結束還剩" + d+"天"+h+"小時"+m+"分"+s+"秒";
 if(lefttime<=0){
  document.getElementById("LeftTime").innerHTML="團購已結束";
  clearInterval(sh);
 }
}
 FreshTime();
 var sh;
 sh=setInterval(FreshTime,1000);
</script>
</body>
</html>