el-tree 节点常用操作

    <el-tree   ref="tree" > </el-tree>

通过key获取节点

   let selectNode = this.$refs.tree.getNode(this.currentData.targetId);
      console.log(selectNode);
      console.log(selectNode.parent);

节点下追加节点

       this.$refs.tree.append(appendNode, fatherNode);

移除节点

 this.$refs.tree.remove(this.currentNode);