计算两个日期的时间差(天数、小时、分钟)

methods: {
          var curTime = new Date().getTime() // 当前时间
          // endTimestamp是后端返回的时间戳
          var endingTime = endTimestamp

          // 两个时间戳相关的毫秒数
          var usedTime = endingTime - curTime

          // 获取天数 (向下取整)
          this.finishDays = Math.floor(usedTime / (24 * 3600 * 1000))
          // 计算天数后剩余的毫秒数
          var days = usedTime % (24 * 3600 * 1000)

          // 获取小时
          this.finishHours = Math.floor(days / (3600 * 1000))
          // 计算小时数后剩余的毫秒数
          var hours = days % (3600 * 1000)
          this.finishHours = this.finishHours < 10 ? '0' + this.finishHours : this.finishHours // 小时补零;

          // 获取分钟
          this.finishMinutes = Math.floor(hours / (1000 * 60))
          this.finishMinutes = this.finishMinutes < 10 ? '0' + this.finishMinutes : this.finishMinutes // 分钟补零;
}

https://gubai.blog.csdn.net/article/details/77649873?spm=1001.2101.3001.6650.1&utm_medium=distribute.pc_relevant.none-task-blog-2%7Edefault%7ECTRLIST%7ERate-1-77649873-blog-81632920.235%5Ev39%5Epc_relevant_default_base&depth_1-utm_source=distribute.pc_relevant.none-task-blog-2%7Edefault%7ECTRLIST%7ERate-1-77649873-blog-81632920.235%5Ev39%5Epc_relevant_default_base&utm_relevant_index=2