Javascript：将简单的节点数组（带有指向父节点的指针）转换为嵌套的数据结构

Question

我已经阅读了许多解决此问题的方法，例如正在尝试使用数组到树

给定此数据：

[
  {
    "_id": 33,
    "parent": null,
    "name": "Wealth and Investment Management and Insurance",
    "code": "wm-0001",
    "__v": 0
  },
  {
    "_id": 34,
    "parent": null,
    "name": "Corporate and Investment Banking",
    "code": "cib-0001",
    "__v": 0
  },
  {
    "_id": 35,
    "parent": 33,
    "name": "WIMI Business Unit 1",
    "code": "WIMBU-0001",
    "__v": 0
  }
]

并使用此代码

var arrayToTree = require('array-to-tree');
var tree = arrayToTree(data, {
            parentProperty: 'parent',
            customID: '_id'
        });

我不明白为什么孤儿会成为孤儿？ 即我回来了

[ { _id: 33,
    parent: null,
    name: 'Wealth and Investment Management and Insurance',
    code: 'wm-0001',
    __v: 0 },
  { _id: 34,
    parent: null,
    name: 'Corporate and Investment Banking',
    code: 'cib-0001',
    __v: 0 } ]

Answer 1

似乎如果_id为Number类型，则array-to-tree不知道该怎么做；

更改此选项会将平面数组转换为树结构。

您可以遍历数组将键 _id / parent转换为string如果它们是number ；

如果您需要，我只会对其进行编辑（但以上方法可以解决）