vue时间差计算

// 时间差计算
    difference: function (beginTime, endTime) {
      var dateBegin = new Date(beginTime);
      var dateEnd = new Date(endTime);
      var dateDiff = dateEnd.getTime() - dateBegin.getTime(); //时间差的毫秒数
      var dayDiff = Math.floor(dateDiff / (24 * 3600 * 1000)); //计算出相差天数
      var leave1 = dateDiff % (24 * 3600 * 1000); //计算天数后剩余的毫秒数
      var hours = Math.floor(leave1 / (3600 * 1000)); //计算出小时数
      //计算相差分钟数
      var leave2 = leave1 % (3600 * 1000); //计算小时数后剩余的毫秒数
      var minutes = Math.floor(leave2 / (60 * 1000)); //计算相差分钟数
      //计算相差秒数
      var leave3 = leave2 % (60 * 1000); //计算分钟数后剩余的毫秒数
      var seconds = Math.round(leave3 / 1000);
      console.log(
        "相差" +
          dayDiff +
          "天" +
          hours +
          "小时" +
          minutes +
          "分钟" +
          seconds +
          "秒"
      );
      this.seconds = seconds;
      this.minutes = minutes;
    },