vue给动态组件绑定ref属性并调用子组件的方法
1、template中的代码

 <el-tabs class="el-tab" v-model="activeName" @tab-click="handleClick">
        <!-- <el-tab-pane label="门禁异常记录" name="first">
          <DoorExceptionRecord
            ref="childDoorAbnormal"
            :changeTime="this.changeTime !== null ? this.changeTime : []"
          ></DoorExceptionRecord>
        </el-tab-pane>
        <el-tab-pane label="门禁正常通行" name="second">
          <NormalAccessControl
            ref="childAccessAbnormal"
            :changeTime="this.changeTime !== null ? this.changeTime : []"
          ></NormalAccessControl>
        </el-tab-pane>
        <el-tab-pane label="巡更异常记录" name="three">
          <patrolAbnormal
            ref="childPatrolAbnormal"
            :changeTime="this.changeTime !== null ? this.changeTime : []"
          ></patrolAbnormal>
        </el-tab-pane>
        <el-tab-pane label="访客记录" name="four">
          <VisitRecord
            ref="childVisitAbnormal"
            :changeTime="this.changeTime !== null ? this.changeTime : []"
          ></VisitRecord>
        </el-tab-pane>
        <el-tab-pane label="操作日志" name="five">
          <OptionLog
            ref="childOptionAbnormal"
            :changeTime="this.changeTime !== null ? this.changeTime : []"
          ></OptionLog>
        </el-tab-pane> -->

        <!-- 代码优化 -->
        <el-tab-pane
          v-for="(item, index) in cpnsNmae"
          :key="index"
          :label="item.type"
          :name="item.name"
        >
          <component
            ref="item"
            :changeTime="changeTime"
            v-if="activeName == item.name"
            :is="item.cpn"
          ></component>
        </el-tab-pane>
      </el-tabs>

2、data和动态组件数据
![在这里插入图片描述](https://img-blog.csdnimg.cn/33408ae9c19d4bd4a67401810e8269fc.png#pic_center)

3、调用子组件的方法
``  searchPatrolAbnormal() {
      console.log(this.$refs.item[0], " this.$refs.");
      this.$refs.item[0].getPatrolAbnormalData();
      // });

      //   case "first":
      //     this.$refs.DoorExceptionRecord.getExeceptionDoorlData();
      //     break;
      //   case "second":
      //     this.$refs.NormalAccessControl.getNormalDoorlData();
      //     break;
      //   case "three":
      //     this.$refs.patrolAbnormal.getPatrolAbnormalData();
      //     break;
      //   case "four":
      //     this.$refs.VisitRecord.getVisitData();
      //     break;
      //   case "five":
      //     this.$refs.OptionLog.getOptionAbnormalData();
      //     break;
      //   default:
      //     break;
      // }
    },

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