当天往后的日期多少天

    _placeList () {
      placeList({
        page: this.page,
        size: this.size
        // userId: localStorage.getItem('userId')
        // userId: localStorage.getItem('nameid'),
        // placeId: this.placeId
      }).then(res => {
        // console.log('res', res)
        if (res.status === 200) {
          let data = res.data.data
          this.leftlists = data.dataList //左侧场地
          for (let i = 0; i < 90; i++) {
            this.leftlists1.push(this.getDay(i)) //右侧日期
          }
          this.dataList = data.dataList
        }
      })
    },
    getDay (day) {
      const today = new Date()
      const targetday_milliseconds =
        today.getTime() + 1000 * 60 * 60 * 24 * day
      today.setTime(targetday_milliseconds) // 注意，这行是关键代码
      const tYear = today.getFullYear()
      let tMonth = today.getMonth()
      let tDate = today.getDate()
      tMonth = this.doHandleMonth(tMonth + 1)
      tDate = this.doHandleMonth(tDate)
      // console.log(this.timeType)
      return {
        key: tYear + '-' + tMonth + '-' + tDate,
        value: tMonth + '月' + tDate + '日'
      }
    },
    doHandleMonth (month) {
      let m = month
      if (month.toString().length === 1) {
        m = '0' + month
      }
      return m
    },