vue element el-select type=‘month’ 禁止选择指定月份

 <el-form-item label="考核时间"
                    prop="param.assessmentDate">
        <el-date-picker v-model="formData.param.assessmentDate"
                        type="month"
                        :disabled="typeOptions.optionType == ‘view‘"
                        :picker-options="pickerOptions"
                        value-format="yyyy-MM"
                        placeholder="选择月份">
        </el-date-picker>
      </el-form-item>

  data () {
    return { 
      creatMonthArr: [‘2021-05‘, ‘2021-04‘], //禁止选择的月份
      pickerOptions: this.getPickerOptions(), 
    };
  },

 getPickerOptions () {
      const self = this
      return {
        disabledDate: (time) => {
          var year = time.getFullYear()
          var month = time.getMonth() + 1
          if (month < 10) { month = ‘0‘ + month }
          var ym = year + ‘-‘ + month
          //把所有年月和需要建立的月份匹配,把没有匹配上的返回出去,让月份选择器可选
          return this.creatMonthArr.includes(ym)   //可取反
        }
        // 不能选择当天之前的
        // disabledDate (time) {
        //   return time.getTime() < 1622512084390 - 8.64e7;
        // },
      };
    },