Javascript 从树中删除所选节点

我正在Angular2应用程序中使用AngularTree组件（）显示一棵树

我需要让用户能够选择树中的任何节点并将其删除。这将删除所选节点及其所有子节点（如果是叶节点，则仅删除该节点）。用户完成后，修剪后的树将发送到服务器并保存在那里

在下面的示例中，用户选择“节点1-2”并单击“删除”。这将从视图中删除“节点1-2”、“节点1”和“节点2”，并更新基础Javascript对象。然后，用户可以单击另一个按钮（如保存）将更新的对象保存到服务器上

为了实现这一点，我编写了以下代码，单击Delete按钮即可调用这些代码。我存储所选节点的id，然后遍历整个树以查找该id。当id匹配时，我使用“delete”关键字删除“id”和“text”。但是，“删除子项”不起作用

deleteSelectedNode() { 
    //Get the node which was selected by the user  
    let nodeToDelete: TreeNode = this.myService.getActiveNode();
    //id will be unique, can be used to identify the node
    let idToDelete = nodeToDelete.data.id; 
    this.traverseTree(this.nodes[0], idToDelete);
  }

  traverseTree(obj, idToDelete: string) {

    for (var k in obj) {
      if (typeof obj[k] == "object" && obj[k] !== null) {
        this.traverseTree(obj[k], idToDelete);
      }

      else {
        if (k === 'id') {
          let id = obj[k];
          if (id === idToDelete) {
            console.log('ID Matched ' + id);
            delete obj['id'];
            delete obj['text'];
            delete obj['children']; 
            break;
          }
        } 
      }
    }
  }

下面是呈现树的JSON

{
        "children": [
            {
                "children": [
                    {
                        "text": "Node 1",
                        "id": "A493"
                    },
                    {
                        "text": "Node 2",
                        "id": "A494"
                    }
                ],
                "text": "Node 1-2",
                "id": "A491"
            },
            {
                "children": [
                    {
                        "children": [
                            {
                                "text": "Node 3",
                                "id": "A5ab"
                            },
                            {
                                "text": "Node 4",
                                "id": "A5ac"
                            },
                            {
                                "text": "Node 5",
                                "id": "A5ad"
                            },
                            {
                                "text": "Node 6",
                                "id": "A5ae"
                            },
                            {
                                "text": "Node 7",
                                "id": "A5af"
                            },
                            {
                                "text": "Node 8",
                                "id": "A5b0"
                            },
                            {
                                "text": "Node 9",
                                "id": "A5b1"
                            },
                            {
                                "text": "Node 10",
                                "id": "A5b2"
                            },
                            {
                                "text": "Node 11",
                                "id": "A5b3"
                            },
                            {
                                "text": "Node 12",
                                "id": "A5b4"
                            },
                            {
                                "text": "Node 13",
                                "id": "A6da"
                            },
                            {
                                "text": "Node 14",
                                "id": "A6db"
                            }
                        ],
                        "text": "Node 1-14",
                        "id": "A495"
                    },
                    {
                        "children": [
                            {
                                "text": "Node 15",
                                "id": "A6dc"
                            },
                            {
                                "text": "Node 16",
                                "id": "A6dd"
                            },
                            {
                                "text": "Node 17",
                                "id": "A6de"
                            },
                            {
                                "text": "Node 18",
                                "id": "A6df"
                            },
                            {
                                "text": "Node 19",
                                "id": "A6e0"
                            },
                            {
                                "text": "Node 20",
                                "id": "A6e1"
                            },
                            {
                                "text": "Node 21",
                                "id": "A6e2"
                            },
                            {
                                "text": "Node 22",
                                "id": "A6e3"
                            }
                        ],
                        "text": "Node 15-22",
                        "id": "A496"
                    },
                    {
                        "text": "Node 23",
                        "id": "A497"
                    },
                    {
                        "text": "Node 24",
                        "id": "A498"
                    }
                ],
                "text": "Node 23-24",
                "id": "A492"
            }
        ],
        "text": "Node 1-24",
        "id": "A490"
    }

---

如何删除整个节点，包括子节点？还有，有没有更好的方法来实现这一点？

您可以通过父级引用轻松地完成这一点

deleteNode() {
    let nodeToDelete: TreeNode = this.tree.treeModel.getActiveNode();
    if (nodeToDelete.level === 1) {
      this.nodes = this.nodes.filter((n) => n.id !== nodeToDelete.id);
    } else {
      nodeToDelete.parent.children = nodeToDelete.parent.children.filter((n) => n.id !== nodeToDelete.id);
    }    
  }