【JS】平级数据转成Tree数据格式

原创已于 2024-05-30 10:44:42 修改 · 188 阅读

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于 2024-05-30 10:44:06 首次发布

const Data = [
    {
        label: '1',
        id: 1,
        parentId: 0
    },
    {
        label: '1-1',
        id: 11,
        parentId: 1
    },
    {
        label: '1-1-1',
        id: 111,
        parentId: 11
    },
    {
        label: '1-1-1-1',
        id: 1111,
        parentId: 111
    },
]

const deepTree = (list: [], id: number, pName?: string) =>
  list
    .filter((item) => item[pName] === id)
    .map((item) => {
      const newArray = { ...item };
      const childrenArray = deepTree(list, item.id, pName);
      if (childrenArray ?.length) {
        newArray.children = childrenArray 
      }
      return newArray
    });
const newData = deepTree(Data, 0 , 'parentId');