Parameter configuration and value passing problem when elementui time selection control type='week'

The date starts from Sunday, and it is found out that the first day of the week is different in various countries, so this is the case. Add: picker-options="{'firstDayOfWeek': 1}" attribute to the control to control, the optional range is 1-7

<el-form-item label="周期:" prop="misCycle">
  <el-date-picker
    v-model="temp1.misCycle"
    :picker-options="{'firstDayOfWeek': 1}"
    type="week"
    format="yyyy 第 WW 周"
    placeholder="请选择周期"
    style="width:100%"
    @change="setWeekNum"
  />
</el-form-item>
data() {
    return {
      temp1: {
        // 周期
        misCycle: '',
      },
      // 周期开始时间
      startDate: '',
      // 周期结束时间
      endDate: '',
      // 周期时间
      finalDate: ''
    }
  },  
methods: {
    p(s) {
      return s < 10 ? '0' + s : s
    },
    // 时间
    setWeekNum() {
      console.log(this.temp1.misCycle)
      const newTime = this.temp1.misCycle.getTime()
      const day = this.temp1.misCycle.getDay()
      const oneDayTime = 24 * 60 * 60 * 1000
      const fromTime = newTime - day * oneDayTime
      const endTime = newTime + (7 - day) * oneDayTime
      const fromDate = new Date(fromTime)
      this.startDate = fromDate.getFullYear() + '\xa0' + this.p((fromDate.getMonth() + 1)) + '\xa0' + this.p(fromDate.getDate() + 1)
      const toDate = new Date(endTime)
      this.endDate = toDate.getFullYear() + '\xa0' + this.p((toDate.getMonth() + 1)) + '\xa0' + this.p(toDate.getDate())
      console.log(this.startDate)
      console.log(this.endDate)
      this.finalDate = this.startDate + '-' + this.endDate
      console.log(this.finalDate)
    }
}