elemnt UI点击事件失效，得到tab的序号

 <template>
          <el-tabs v-model="activeName2" @tab-click="handleClick">
            <el-tab-pane class="chartsPanel" label="教学质量分布" name="first-ta"></el-tab-pane>
            <el-tab-pane class="chartsPanel" label="科研荣誉分布" name="second-ta"></el-tab-pane>
          </el-tabs>
        </template>

  export default {
    name: 'chart',
    data () {
      return {
        activeName2: 'first-ta',
      }
    },
    methods: {
      handleClick: function (tab, event) {
        console.log(event)
        console.log(event.target.getAttribute('id'))  //获取到当前元素的id
      }
    }
  }