elementui 中tab切换

 <el-tabs v-model="activeName" @tab-click="handleClick">
        <el-tab-pane label="工业用户" name="0">
          <Industrial v-if="activeName == 0" :gas-type="3"></Industrial>
        </el-tab-pane>
        <el-tab-pane label="商业用户" name="1">
          <Commerce v-if="activeName == 1"></Commerce>
        </el-tab-pane>
        <el-tab-pane label="民用用户" name="2">
          <Civil v-if="activeName == 2"></Civil>
        </el-tab-pane>
        <el-tab-pane label="煤改气用户" name="3">
          <Gas v-if="activeName == 3"></Gas>
        </el-tab-pane>
      </el-tabs>

export default {
  components: { Civil, Commerce, Industrial, Gas },
  data() {
    return {
      activeName: '0'
    }
  },
  methods: {
    handleClick(tab) {
      this.activeName = tab.index
    }
  }
}
</script>