el-data-picker时间选择器最多选择7天，且只能选当前之前时间

<el-date-picker
          v-model="form.statisticsTime"
          type="daterange"
          value-format="yyyy-MM-dd"
          range-separator="~"
          start-placeholder="开始日期"
          end-placeholder="结束日期"
          :picker-options="pickerOptions"
          prefix-icon=0
        />

// 日期选择七天内,且当前时间后不能选择
      pickerOptions: {
        onPick: time => {
          // 选择开始时间未选择结束时间
          if (time.minDate && !time.maxDate) {
            this.timeOptionRange = time.minDate;
          }
          if (time.maxDate) {
            this.timeOptionRange = null;
          }
        },
        disabledDate: time => {
          let timeOptionRange = this.timeOptionRange;
          let secondNum = 1000 * 60 * 60 * 24 * 7;
          if (!timeOptionRange) {
            return time.getTime() > Date.now() - 8.64e6
          }
          if ((timeOptionRange.getTime() + secondNum) > (Date.now() - 8.64e6)) {
            return time.getTime() > Date.now() - 8.64e6 || time.getTime() < timeOptionRange.getTime() - secondNum;
          }
          return time.getTime() > timeOptionRange.getTime() + secondNum || time.getTime() < timeOptionRange.getTime() - secondNum;
        }
      },