倒計時

  function GetRTime(){
            var EndTime= new Date('2016/01/28 19:00:00');
            var NowTime = new Date();
            var t =EndTime.getTime() - NowTime.getTime();
            var d=Math.floor(t/1000/60/60/24);
            var h=Math.floor(t/1000/60/60%24);
            var m=Math.floor(t/1000/60%60);
            var s=Math.floor(t/1000%60);

            document.getElementById("t_d").innerHTML = '<span class="bg">'+d+'</span>' + "天";
            document.getElementById("t_h").innerHTML = '<span class="bg">'+h+'</span>'+ "小時";
            document.getElementById("t_m").innerHTML = '<span class="bg">'+m+'</span>'+ "分";
            document.getElementById("t_s").innerHTML = '<span class="bg">'+s+'</span>'+ "秒";

            if(d <= 0&& h<=0 &&m<=0&&s<=0){
                $(".time").html('已經開始了，趕緊去觀看')
            }
        }
        setInterval(GetRTime,0);