JS实现的仿淘宝交易倒计时效果

<script type="text/javascript">

var StartTime = new Date("2015/11/11 12:34:03");

document.write("订购时间: " + StartTime.toLocaleDateString() + StartTime.toLocaleTimeString() + "<br/>");

var CurrentTime = new Date();

document.write("当前时间: " + CurrentTime.toLocaleDateString() + CurrentTime.toLocaleTimeString() + "<br/>");

var EndTime=StartTime.getTime() + 15*24*60*60*1000;//约定订购时间15天后关闭交易

EndTime = new Date(EndTime);

document.write("结束时间: " + EndTime.toLocaleDateString() + EndTime.toLocaleTimeString() + "<br/>");

var TempTime = StartTime;

var nMS,nD,nH,nM,nS;

function ShowCloseTime(){  

  var oDate = new Date();

  nMS=EndTime-oDate ;  

  nD=Math.floor(nMS/(1000*60*60*24));

  nH=Math.floor(nMS/(1000*60*60)) % 24 ;

  nM=Math.floor(nMS/(1000*60)) % 60;

  nS=Math.floor(nMS/1000) % 60;  

  document.getElementById("CloseTime").innerHTML = ("您还有" + nD + "天" + nH + "小时" + nM + "分" + nS + "秒完成交易");

  if (nS<0 || nM<0 || nH<0 || nD<0)

  {

    document.getElementById("CloseTime").innerHTML = "交易因超过15天,已被系统自动关闭"

    clearInterval(CloseTimer);

  }

}

var CloseTimer = window.setInterval("ShowCloseTime()",1000) 

</script>

<div id="CloseTime"></div>