树转数组

输入符合规则的数据和参数，看看树转数组实现的效果。addFields 字段中有回调函数无法在此处展示效果。

数据：

[{"id":"1","name":"root","children":[{"id":"2","name":"child1"},{"id":"3","name":"child2","children":[{"id":"4","name":"grandchild"}]}]}]

参数：

{"childrenKey":"children","ignoreFields":["name"],"needParentId":true}

输出：

[
  {
    "id": "1",
    "parentId": ""
  },
  {
    "id": "2",
    "parentId": "1"
  },
  {
    "id": "3",
    "parentId": "1"
  },
  {
    "id": "4",
    "parentId": "3"
  }
]