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;
})
}, []);
原文:https://www.cnblogs.com/zhaoyzml/p/14366676.html