构造树结构数据

 const getTree = React.useCallback((map: Map<any, any>, parent_id?: any,     
  data?: any[]) => {
        if (!data) return [];
        
        return data.filter(e => e.parent_id === parent_id).map(e => {
            const item = {
                title: e.name,
                key: e.id,
                children: getTree(map, e.id, data)
            }
            map.set(item.key, item);
            return item;
        })
    }, []);    

  

posted @ 2021-02-22 21:58  zhaoyzml  阅读(10)  评论(0编辑  收藏  举报