jq倒计时 天时分秒好用

<script>
  var starttime = Date.parse(new Date('2018/8/1'))+15*60*60*1000; //8月1号15点
  setInterval(function () {
    var nowtime = Date.parse(new Date());
    var time = starttime - nowtime;
    var day = parseInt(time / 1000 / 60 / 60 / 24);
    var hour = parseInt(time / 1000 / 60 / 60 % 24);
    var minute = parseInt(time / 1000 / 60 % 60);
    var seconds = parseInt(time / 1000 % 60);

    $('.day').html(day)
    $('.hour').html(hour)
    $('.minute').html(minute)
    $('.seconds').html(seconds)

  }, 1000);
</script>

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