js倒計時代碼 適合於促銷-倒計時代碼

				<div class="tiem_price clearfix fonts" style="margin-top:15px;">
				  <div class="clockContainer clockContainer1 fl relative" id="38zhe"> <span class="day fl timer">00</span><em class="tag fl">天</em> <span class="hour fl timer">00</span><em class="tag fl">時</em> <span class="minute fl timer">00</span><em class="tag fl">分</em> <span class="second fl timer">00</span><em class="tag fl">秒</em> </div>
				  <div class="youhuiPrice relative fr">原價：3800元/次</div>
				</div>

				<div class="tiem_price clearfix fonts">
				  <div class="clockContainer clockContainer1 fl relative" id="0tuo"> <span class="day fl timer">00</span><em class="tag fl">天</em> <span class="hour fl timer">00</span><em class="tag fl">時</em> <span class="minute fl timer">00</span><em class="tag fl">分</em> <span class="second fl timer">00</span><em class="tag fl">秒</em> </div>
				  <div class="youhuiPrice relative fr">僅限網絡預約</div>
				</div>

<script>
	$(function(){ 
		countDown("2016/3/3  12:00:00","#38zhe"); 
		countDown("2016/3/31 12:00:00","#0tuo"); 
	}); 
</script>

以上爲html加載部分代碼

========================================

js頁面代碼

// JavaScript Document
	function countDown(time,id){ 
	 var day_elem=$(id).find('.day'); 
	 var hour_elem=$(id).find('.hour'); 
	 var minute_elem=$(id).find('.minute'); 
	 var second_elem=$(id).find('.second'); 
	 var end_time = new Date(time).getTime();
	 var sys_second = (end_time-new Date().getTime())/1000; 
	 var timer = setInterval(function(){ 
	  if(sys_second>1) { 
	   sys_second-=1; 
	   var day=Math.floor((sys_second/3600)/24); 
	   var hour=Math.floor((sys_second/3600)%24); 
	   var minute=Math.floor((sys_second/60)%60); 
	   var second=Math.floor(sys_second%60); 
	   $(day_elem).text(day);
	   $(hour_elem).text(hour<10?"0"+hour:hour);
	   $(minute_elem).text(minute<10?"0"+minute:minute); 
	   $(second_elem).text(second<10?"0"+second:second);
	  } 
	  else { 
	   clearInterval(timer); 
	  } 
	 }, 1000); 
	} 

代碼功能:可實現一個頁面多個倒計時功能