</center>
<script type="text/javascript"> function getRTime() {
    var EndTime = new Date('2020/01/25 00:00:00');
    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 = d + " 天";
    document.getElementById("t_h").innerHTML = h + " 时";
    document.getElementById("t_m").innerHTML = m + " 分";
    document.getElementById("t_s").innerHTML = s + " 秒";
}
setInterval(getRTime, 1000);
</script>