async getAllEntry() //保存数据的

    {

       let menus = 

            [

                { id : "1", name : "IT开发部"} ,

                { id : "2", name : "行政部"} ,

                { id : "21", name : "会计部", parentId : "2"} ,

                { id : "22", name : "出纳部", parentId : "2"} ,

                { id : "3", name : "咨询部"} ,

            ]

        returnmenus;

    } 

     <DirectoryTree

         multiple

         defaultExpandAll

         onSelect={this.onSelect}

         onExpand={this.onExpand}

        >

        {

            ( function()

            {

            let subOrg = function(parentId)

                    {

                        returnorgs.filter( org => parentId ? ( org.parentId == parentId ) : ( org.parentId == null) ).map( org =>

                            {

                                return( 

                                        <TreeNode title={org.name} key={org.id} >

                                            {

                                                subOrg( org.id )

                                            }

                                        </TreeNode>                        

                                    );

                            }   )

                    };

                returnsubOrg();

            } )()

        }

      </DirectoryTree>

                这个是我写的树结构，现在想要实现：点击一个按钮，就在当前节点下创建或者删除一个新的子节点。