js根据日期判断昨天今天并显示(Vue)

应最近项目要求,按照日期判断昨天和今天,如果是昨天或今天显示汉字,否则显示日期

效果图

 
{{judgeTime('2019-03-14 09:11:18')}}

    add0 (m) {
      return m < 10 ? '0' + m : m
    },
    judgeTime (date) {
      console.log(date)
      // 2019-03-14 09:11:18
      let _this = this
      let dateStr = new Date(date)
      let today = new Date(parseInt(this.serverTime))
      let hour = today.getHours()
      let minute = today.getMinutes()
      let second = today.getSeconds()
      today.setHours(0)
      today.setMinutes(0)
      today.setSeconds(0)
      today.setMilliseconds(0)
      let otime = today.getTime()
      // 给出时间 - 今天0点
      let offset = dateStr.getTime() - otime
      let isToday = offset / 1000 / 60 / 60
      if (isToday > 0 && isToday <= 24) {
        return '今天 ' + _this.add0(hour) + ':' + _this.add0(minute) + ':' + _this.add0(second)
      } else if (isToday < 0 && isToday >= -24) {
        return '昨天 ' + _this.add0(hour) + ':' + _this.add0(minute) + ':' + _this.add0(second)
      } else {
        return date
      }
    }