递归组件

tree子组件

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<template>
  <div>
    <div @click.stop="clickTreeItem(item)" :key="index" v-for="(item,index) in data" class="tree">
      {{item.name}}
      <TreeItem @on-click="clickTreeItem" v-if="item?.children?.length" :data="item.children"></TreeItem>
    </div>
  </div>
</template>

<script setup lang="ts">
type TreeList = {
  name:string,
  icon?:string,
  children?:TreeList[] | []
}

type Props = {
  data?:TreeList[]
}

defineProps<Props>()

const emit = defineEmits(['on-click'])
const clickTreeItem = (treeItem: TreeList) => {
  emit('on-click', treeItem)
}
</script>

<script lang="ts">
export default {
  name: "TreeItem"
}
</script>

<style scoped lang="less">
.tree{
  margin-left: 10px;
}
</style>

menu父组件

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<template>
  <div class="menu">
    Menu
    <tree @on-click="clickTreeItem" :data="data"></tree>
  </div>

</template>
<script setup lang="ts">
import {reactive, ref} from "vue";

type TreeList = {
  name:string,
  icon?:string,
  children?:TreeList[] | []
}

let data = reactive<TreeList[]>([
  {
    name:'no.1',
    children:[
      {
        name:'no.1-1',
        children:[
          {
            name:'no.1-1-1',
            children:[]
          }
        ]
      }
    ]
  },
  {
    name:'no.2',
    children:[
      {
        name:'no.2-1',
        children: []
      }
    ]
  },
  {
    name:'no.3',
  }
])

const clickTreeItem = (treeItem:TreeList) => {
  console.log(treeItem)
}
</script>