本文实例讲述了Javascript实现的商品抢购倒计时功能。分享给大家供大家参考，具体如下：
<html><head><meta charset="utf-8"><title>JS抢购倒计时</title></head><body><span id="times" ><script LANGUAGE="Javascript">function _fresh(){ var endtime=new Date("2017/4/23,19:33:12"); var nowtime = new Date(); var leftsecond=parseInt((endtime.getTime()-nowtime.getTime())/1000); __d=parseInt(leftsecond/3600/24); __h=parseInt((leftsecond/3600)%24); __m=parseInt((leftsecond/60)%60); __s=parseInt(leftsecond%60);var c=new Date();var q=((c.getMilliseconds())%10); document.getElementById("times").innerHTML=__d+"天 "+__h+"小时"+__m+"分"+__s+"."+q+"秒"; if(leftsecond<=0){ document.getElementById("times").innerHTML="抢购已结束"; clearInterval(sh); }}_fresh()var sh;sh=setInterval(_fresh,100);</script></span></body></html>运行效果图如下：
