elementui el-date-picker 選擇一個月范圍

<el-date-picker
  v-model="times"
  :picker-options="pickerOptions"
  type="daterange"
  range-separator="——"
  start-placeholder="起始時間"
  end-placeholder="截止時間"
  value-format="yyyy-MM-dd">
</el-date-picker>

data() {
  return {
      times: '',
      cuttentTime: '',
      pickerOptions: {
        onPick: ({ maxDate, minDate }) => {
          this.cuttentTime = minDate.getTime()
          if (maxDate) {
            this.cuttentTime = ''
          }
        },
        disabledDate: (time) => {
          if (this.cuttentTime != '') {
            const one = 30 * 24 * 3600 * 1000
            const minTime = this.cuttentTime - one
            const maxTime = this.cuttentTime + one
            return time.getTime() < minTime || time.getTime() > maxTime
          }
        }
      }
  }
}