使用elementui的el-tabs标签页，点击一个tabs后，下面的组件进行刷新

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<template>
    <div class="box">
        <h3 style="text-align: center;">微微派单管理系统</h3>
        <template>
            <el-tabs v-model="activeName" @tab-click="handleLoad">
                <el-tab-pane label="用户" name="1">
                    <userInfo :key="timer1"></userInfo>
                </el-tab-pane>
                <el-tab-pane lazy label="数据导入" name="2" >
                    <improtData :key="timer2"></improtData>
                </el-tab-pane>
                <el-tab-pane lazy label="数据分析" name="3">
                    <analysisData :key="timer3"></analysisData>
                </el-tab-pane>
                <el-tab-pane lazy label="群" name="4">
                    <group :key="timer4"></group>
                </el-tab-pane>
            </el-tabs>
        </template>
    </div>
</template>
<script>
import userInfo from '../components/user.vue'
import improtData from '../components/improtData.vue'
import analysisData from '../components/analysisData.vue'
import group from '../components/group.vue'
export default {
  data () {
    return {
        activeName: '1',
        timer1:'',
        timer2:'',
        timer3:'',
        timer4:''
    }
  },
  methods: {
    // handleClick (tab, event) {
    //     console.log(tab, event)
    // },
    handleLoad (data) {
        let name = data.name
        if(name == 1){
        this.timer1 = new Date().getTime()
      }else if(name == 2){
        this.timer2 = new Date().getTime()
      }else if(name == 3){
        this.timer3 = new Date().getTime()
      }else if(name == 4){
        this.timer4 = new Date().getTime()
      }
    }
  },
  components: {
       userInfo: userInfo,
       improtData:improtData,
       analysisData:analysisData,
       group:group
  }
}
</script>
<style lang="stylus" scoped>
.box{
    padding 10px
}
/deep/ .el-tabs__item{
    width 100px;
    text-align center
}
</style>

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created() {
        console.log('点击加载了')
    },