关于element中的el-tree和el-tag之间的联动

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<template>
  <div>
    <el-tree
      ref="tree"
      class="tenant_tree"
      :data="data"
      show-checkbox
      :props="defaultProps"
      node-key="id"
      highlight-current
      @check-change="handleCheckChange"
    ></el-tree>
    <el-tag
      v-for="(tag, index) in tags"
      :key="index"
      style="margin: 10px 10px"
      closable
      @close="handleClose(tag)"
    >
      {{ tag.label }}
    </el-tag>
  </div>
</template>
<script>
const data = [
  {
    id: 1,
    label: "Level one 1",
    children: [
      {
        id: 3,
        label: "Level two 2-1",
        children: [
          {
            id: 4,
            label: "Level three 3-1-1",
          },
          {
            id: 5,
            label: "Level three 3-1-2",
          },
          {
            id: 8,
            label: "Level three 3-1-3",
          },
          {
            id: 9,
            label: "Level three 3-1-4",
          },
        ],
      },
      {
        id: 2,
        label: "Level two 2-2",
        children: [
          {
            id: 6,
            label: "Level three 3-2-1",
          },
          {
            id: 7,
            label: "Level three 3-2-2",
          },
          {
            id: 10,
            label: "Level three 3-2-3",
          },
          {
            id: 11,
            label: "Level three 3-2-4",
          },
        ],
      },
    ],
  },
  {
    id: 12,
    label: "Level one 2",
    children: [
      {
        id: 13,
        label: "Level two 2-3",
        children: [
          {
            id: 14,
            label: "Level three 3-3-1",
          },
          {
            id: 15,
            label: "Level three 3-3-2",
          },
          {
            id: 16,
            label: "Level three 3-3-3",
          },
        ],
      },
      {
        id: 17,
        label: "Level two 2-4",
        children: [
          {
            id: 18,
            label: "Level three 3-4-1",
          },
          {
            id: 19,
            label: "Level three 3-4-2",
          },
          {
            id: 20,
            label: "Level three 3-4-3",
          },
        ],
      },
    ],
  },
];
export default {
  data() {
    return {
      searchData: "",
      data: [],
      defaultProps: {
        children: "children",
        label: "label",
      },
      tags: [], // 选中的节点,
      checked: false,
    };
  },
  mounted() {
    this.data = data;
  },
  methods: {
    handleCheckChange() {
      this.tags = this.$refs.tree.getCheckedNodes();
      console.log("总的数据是", this.tags);
    },
    // 标签删除事件
    handleClose(tag) {
      console.log("所点击的是", tag);
      console.log("总的数据是", this.tags);
      for (let i = 0; i < this.tags.length; i++) {
        const element = this.tags[i];
        if (tag.id === element.id) {
          this.tags.splice(i, 1);
          this.$refs.tree.setChecked(tag.id, null);
        }
      }
    },
  },
};
</script>