计算两个时间间隔

    borrowTiming(start, end) {
      return (start, end) => {
        start = dayjs(start);
        end = dayjs(end);
        let time = end.diff(start);

        //计算出相差天数
        var days = Math.floor(time / (24 * 3600 * 1000));

        //计算出小时数
        var leave1 = time % (24 * 3600 * 1000); //计算天数后剩余的毫秒数
        var hours = Math.floor(leave1 / (3600 * 1000));
        
        //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));
        return `${days}天${hours}小时${minutes}分钟`;
      }