关于商场倒计时活动！

 <script type="text/javascript">  
        function getTime(){
            var t1=new Date();
            var t2=new Date(2016,1,7,23,59,59);
            var time1=t1.getTime();
            var time2=t2.getTime();
            var time3=parseInt(parseInt(time2-time1)/1000);
            var d=parseInt(time3/86400);
            var h=parseInt((time3-(d*86400))/3600);
            var m=parseInt((time3-(d*86400)-(h*3600))/60);
            var s=parseInt(time3-(d*86400)-(h*3600)-(m*60));
            timer.innerHTML=d-31+"天"+h+"小时"+m+"分"+s+"秒";
        }
        setInterval(getTime,1000);
        </script>

原文：http://www.cnblogs.com/yishang/p/5109178.html