一級Id為負(fù)數(shù)、parentId為空，二級parentId等于一級id，三級parentId等于二級id[{"name": "廣東","Id": -1,"parentId": null},{"name": "湖北","Id": -2,"parentId": null},{"name": "廣州","Id": 44,"parentId": -1},{"name": "武漢","Id": 58,"parentId": -2},{"name": "深圳","Id": 12,"parentId":-1 },{"name": "白云","Id": 741,"parentId": 44}]
根據(jù)下面數(shù)組怎么生成三級聯(lián)動菜單樹？（考慮性能）
長風(fēng)秋雁
2018-09-03 12:17:18