elementUI中日期时间插件（DateTimePicke） 限制结束时间大于开始时间且开始时间小于当前时间

页面

<span class="searchtime">开始时间:</span>
    <el-date-picker
       size="small"
       v-model="searchingCondition.beginTime"
       type="date"
       :picker-options="startTime"
       placeholder="选择开始日期"
       value-format="yyyy-MM-dd">
   </el-date-picker>
 <span class="searchtime">结束时间：</span>
     <el-date-picker
        size="small"
        v-model="searchingCondition.endTime"
        type="date"
        :picker-options="endTime"
        placeholder="选择结束时间"
        value-format="yyyy-MM-dd">
   </el-date-picker>

方法

     data() {
      return {
        searchingCondition: {  
          beginTime: '',
          endTime: '',
        },
         /* start  */
        startTime: {
          disabledDate: time => {
            if (this.searchingCondition.endTime) {
              return (
                time.getTime() > new Date(this.searchingCondition.endTime).getTime()
              );
            } else {
              return time.getTime() > Date.now();
            }
          }
        },
        endTime: {
          disabledDate: time => {
            if (this.searchingCondition.beginTime) {
              return (
                time.getTime() > Date.now() ||
                time.getTime() < new Date(this.searchingCondition.beginTime).getTime()
              );
            } else {
              return time.getTime() > Date.now();
            }
          }
        },
        /* end*/

      };
    },