VUE 选中时间禁止选中的之前或之后

 <el-form-item label="开始时间"
                      prop="startTime"
                      class="ml_10">
          <el-date-picker v-model="form.productPurchase.startTime"
                          type="datetime"
                          :disabled="this.priceData.operatorType == 'view'"
                          placeholder="选择日期时间"
                          value-format="yyyy-MM-dd HH:mm:ss"
                          :picker-options="startDatePicker"></el-date-picker>
        </el-form-item>
        <el-form-item label="结束时间"
                      prop="endTime"
                      class="ml_10">
          <el-date-picker v-model="form.productPurchase.endTime"
                          type="datetime"
                          :disabled="this.priceData.operatorType == 'view'"
                          placeholder="选择日期时间"
                          value-format="yyyy-MM-dd HH:mm:ss"
                          :picker-options="endDatePicker"></el-date-picker>
        </el-form-item>

data

 startDatePicker: this.beginDate(),
 endDatePicker: this.processDate(),

methods

 beginDate () {
      const self = this;
      return {
        disabledDate (time) {
          if (self.form.productPurchase.endTime) {
            return (
              new Date(self.form.productPurchase.endTime).getTime() <
              time.getTime()
            );
          }
        },
      };
    },
    processDate () {
      const self = this;
      return {
        disabledDate (time) {
          if (self.form.productPurchase.startTime) {
            return (
              new Date(self.form.productPurchase.startTime).getTime() >
              time.getTime()
            );
          }
        },
      };
    },