js 数据组合，一级结构组合成父子嵌套数组结构

news2025/1/27 23:55:05

1.方法

buildDeptTree(deptData) { //构建树状部门
        // 创建一个 map 来存储 deptId 和对应的部门对象
        const deptMap = new Map();
        // 初始化每个部门对象的 children 属性为空数组
        deptData.forEach(dept => {
            dept.children = [];
            deptMap.set(dept.deptId, dept);
        });
        // 构建树形结构
        let rootDepts = [];
        deptData.forEach(dept => {
            if (dept.parentId === 0) {
                rootDepts.push(dept);
            } else {
                const parentDept = deptMap.get(dept.parentId);
                if (parentDept) {
                    parentDept.children.push(dept);
                }
            }
        });
        // 移除所有 children 为空的数组
        function removeEmptyChildren(depts) {
            depts.forEach(dept => {
                if (dept.children.length === 0) {
                    delete dept.children;
                } else {
                    removeEmptyChildren(dept.children);
                }
            });
        }
        removeEmptyChildren(rootDepts);
        return rootDepts;
    },

2.应用

this.buildDeptTree(res.data);

3.数据：

[
    {
        "createBy": "admin",
        "createTime": "2023-09-06 08:20:03",
        "updateBy": null,
        "updateTime": null,
        "remark": null,
        "deptId": 100,
        "parentId": 0,
        "ancestors": "0",
        "deptName": "普陀",
        "orderNum": 0,
        "leader": "admin",
        "phone": "",
        "email": "",
        "status": "0",
        "delFlag": "0",
        "parentName": null,
        "children": []
    },
    {
        "createBy": "admin",
        "createTime": "2025-01-02 10:43:21",
        "updateBy": null,
        "updateTime": null,
        "remark": null,
        "deptId": 262,
        "parentId": 100,
        "ancestors": "0,100",
        "deptName": "投促办",
        "orderNum": 1,
        "leader": "",
        "phone": "",
        "email": "",
        "status": "0",
        "delFlag": "0",
        "parentName": null,
        "children": []
    },
    {
        "createBy": "admin",
        "createTime": "2025-01-18 11:20:17",
        "updateBy": null,
        "updateTime": null,
        "remark": null,
        "deptId": 312,
        "parentId": 100,
        "ancestors": "0,100",
        "deptName": "委办",
        "orderNum": 1,
        "leader": "",
        "phone": "",
        "email": "",
        "status": "0",
        "delFlag": "0",
        "parentName": null,
        "children": []
    },
    {
        "createBy": "admin",
        "createTime": "2023-09-06 08:20:03",
        "updateBy": null,
        "updateTime": null,
        "remark": null,
        "deptId": 101,
        "parentId": 100,
        "ancestors": "0,100",
        "deptName": "上海联通分公司",
        "orderNum": 1,
        "leader": "若依",
        "phone": "15888888888",
        "email": "ry@qq.com",
        "status": "0",
        "delFlag": "0",
        "parentName": null,
        "children": []
    },
    {
        "createBy": "admin",
        "createTime": "2024-12-20 14:41:07",
        "updateBy": null,
        "updateTime": null,
        "remark": null,
        "deptId": 232,
        "parentId": 100,
        "ancestors": "0,100",
        "deptName": "诉求",
        "orderNum": 1,
        "leader": "",
        "phone": "",
        "email": "",
        "status": "0",
        "delFlag": "0",
        "parentName": null,
        "children": []
    },
    {
        "createBy": "admin",
        "createTime": "2025-01-02 10:51:51",
        "updateBy": null,
        "updateTime": null,
        "remark": null,
        "deptId": 266,
        "parentId": 100,
        "ancestors": "0,100",
        "deptName": "街道",
        "orderNum": 1,
        "leader": "",
        "phone": "",
        "email": "",
        "status": "0",
        "delFlag": "0",
        "parentName": null,
        "children": []
    },
    {
        "createBy": "admin",
        "createTime": "2023-10-17 14:25:10",
        "updateBy": null,
        "updateTime": null,
        "remark": null,
        "deptId": 210,
        "parentId": 100,
        "ancestors": "0,100",
        "deptName": "XX联通分公司",
        "orderNum": 2,
        "leader": "",
        "phone": "",
        "email": "",
        "status": "0",
        "delFlag": "0",
        "parentName": null,
        "children": []
    },
    {
        "createBy": "admin",
        "createTime": "2023-09-06 08:20:03",
        "updateBy": null,
        "updateTime": null,
        "remark": null,
        "deptId": 103,
        "parentId": 101,
        "ancestors": "0,100,101",
        "deptName": "研发部门",
        "orderNum": 1,
        "leader": "若依",
        "phone": "15888888888",
        "email": "ry@qq.com",
        "status": "0",
        "delFlag": "0",
        "parentName": null,
        "children": []
    },
    {
        "createBy": "admin",
        "createTime": "2023-09-06 08:20:03",
        "updateBy": null,
        "updateTime": null,
        "remark": null,
        "deptId": 105,
        "parentId": 101,
        "ancestors": "0,100,101",
        "deptName": "测试部门",
        "orderNum": 2,
        "leader": "若依",
        "phone": "15888888888",
        "email": "ry@qq.com",
        "status": "0",
        "delFlag": "0",
        "parentName": null,
        "children": []
    },
    {
        "createBy": "admin",
        "createTime": "2024-12-20 14:41:40",
        "updateBy": null,
        "updateTime": null,
        "remark": null,
        "deptId": 243,
        "parentId": 232,
        "ancestors": "0,100,232",
        "deptName": "诉求协办部门",
        "orderNum": 1,
        "leader": "",
        "phone": "",
        "email": "",
        "status": "0",
        "delFlag": "0",
        "parentName": null,
        "children": []
    },
    {
        "createBy": "admin",
        "createTime": "2024-12-20 14:41:29",
        "updateBy": null,
        "updateTime": null,
        "remark": null,
        "deptId": 242,
        "parentId": 232,
        "ancestors": "0,100,232",
        "deptName": "诉求会办部门",
        "orderNum": 1,
        "leader": "",
        "phone": "",
        "email": "",
        "status": "0",
        "delFlag": "0",
        "parentName": null,
        "children": []
    },
    {
        "createBy": "admin",
        "createTime": "2024-12-20 14:41:20",
        "updateBy": null,
        "updateTime": null,
        "remark": null,
        "deptId": 233,
        "parentId": 232,
        "ancestors": "0,100,232",
        "deptName": "诉求主办部门",
        "orderNum": 1,
        "leader": "",
        "phone": "",
        "email": "",
        "status": "0",
        "delFlag": "0",
        "parentName": null,
        "children": []
    },
    {
        "createBy": "admin",
        "createTime": "2025-01-02 16:34:55",
        "updateBy": null,
        "updateTime": null,
        "remark": null,
        "deptId": 303,
        "parentId": 262,
        "ancestors": "0,100,262",
        "deptName": "桃浦地区投促中心",
        "orderNum": 2,
        "leader": "",
        "phone": "",
        "email": "",
        "status": "0",
        "delFlag": "0",
        "parentName": null,
        "children": []
    },
    {
        "createBy": "admin",
        "createTime": "2025-01-02 16:35:09",
        "updateBy": null,
        "updateTime": null,
        "remark": null,
        "deptId": 304,
        "parentId": 262,
        "ancestors": "0,100,262",
        "deptName": "真如地区投促中心",
        "orderNum": 2,
        "leader": "",
        "phone": "",
        "email": "",
        "status": "0",
        "delFlag": "0",
        "parentName": null,
        "children": []
    },
    {
        "createBy": "admin",
        "createTime": "2025-01-02 16:35:18",
        "updateBy": null,
        "updateTime": null,
        "remark": null,
        "deptId": 305,
        "parentId": 262,
        "ancestors": "0,100,262",
        "deptName": "长风地区投促中心",
        "orderNum": 2,
        "leader": "",
        "phone": "",
        "email": "",
        "status": "0",
        "delFlag": "0",
        "parentName": null,
        "children": []
    },
    {
        "createBy": "admin",
        "createTime": "2025-01-02 16:35:27",
        "updateBy": null,
        "updateTime": null,
        "remark": null,
        "deptId": 306,
        "parentId": 262,
        "ancestors": "0,100,262",
        "deptName": "长征地区投促中心",
        "orderNum": 2,
        "leader": "",
        "phone": "",
        "email": "",
        "status": "0",
        "delFlag": "0",
        "parentName": null,
        "children": []
    },
    {
        "createBy": "admin",
        "createTime": "2025-01-02 10:47:25",
        "updateBy": null,
        "updateTime": null,
        "remark": null,
        "deptId": 263,
        "parentId": 262,
        "ancestors": "0,100,262",
        "deptName": "项目推进科",
        "orderNum": 2,
        "leader": "",
        "phone": "",
        "email": "",
        "status": "0",
        "delFlag": "0",
        "parentName": null,
        "children": []
    },
    {
        "createBy": "admin",
        "createTime": "2025-01-02 10:47:36",
        "updateBy": null,
        "updateTime": null,
        "remark": null,
        "deptId": 272,
        "parentId": 262,
        "ancestors": "0,100,262",
        "deptName": "企业服务科",
        "orderNum": 2,
        "leader": "",
        "phone": "",
        "email": "",
        "status": "0",
        "delFlag": "0",
        "parentName": null,
        "children": []
    },
    {
        "createBy": "admin",
        "createTime": "2025-01-02 10:47:47",
        "updateBy": null,
        "updateTime": null,
        "remark": null,
        "deptId": 273,
        "parentId": 262,
        "ancestors": "0,100,262",
        "deptName": "地区指导科",
        "orderNum": 2,
        "leader": "",
        "phone": "",
        "email": "",
        "status": "0",
        "delFlag": "0",
        "parentName": null,
        "children": []
    },
    {
        "createBy": "admin",
        "createTime": "2025-01-02 10:50:39",
        "updateBy": null,
        "updateTime": null,
        "remark": null,
        "deptId": 264,
        "parentId": 262,
        "ancestors": "0,100,262",
        "deptName": "经济运行科",
        "orderNum": 2,
        "leader": "",
        "phone": "",
        "email": "",
        "status": "0",
        "delFlag": "0",
        "parentName": null,
        "children": []
    },
    {
        "createBy": "admin",
        "createTime": "2025-01-02 10:50:22",
        "updateBy": null,
        "updateTime": null,
        "remark": null,
        "deptId": 282,
        "parentId": 262,
        "ancestors": "0,100,262",
        "deptName": "办公室主任",
        "orderNum": 2,
        "leader": "",
        "phone": "",
        "email": "",
        "status": "0",
        "delFlag": "0",
        "parentName": null,
        "children": []
    },
    {
        "createBy": "admin",
        "createTime": "2025-01-02 10:51:30",
        "updateBy": null,
        "updateTime": null,
        "remark": null,
        "deptId": 265,
        "parentId": 262,
        "ancestors": "0,100,262",
        "deptName": "综合科",
        "orderNum": 2,
        "leader": "",
        "phone": "",
        "email": "",
        "status": "0",
        "delFlag": "0",
        "parentName": null,
        "children": []
    },
    {
        "createBy": "admin",
        "createTime": "2025-01-02 10:51:39",
        "updateBy": null,
        "updateTime": null,
        "remark": null,
        "deptId": 274,
        "parentId": 262,
        "ancestors": "0,100,262",
        "deptName": "产业发展科",
        "orderNum": 2,
        "leader": "",
        "phone": "",
        "email": "",
        "status": "0",
        "delFlag": "0",
        "parentName": null,
        "children": []
    },
    {
        "createBy": "admin",
        "createTime": "2025-01-02 16:34:42",
        "updateBy": null,
        "updateTime": null,
        "remark": null,
        "deptId": 302,
        "parentId": 262,
        "ancestors": "0,100,262",
        "deptName": "长寿地区投促中心",
        "orderNum": 2,
        "leader": "",
        "phone": "",
        "email": "",
        "status": "0",
        "delFlag": "0",
        "parentName": null,
        "children": []
    },
    {
        "createBy": "admin",
        "createTime": "2025-01-02 10:52:56",
        "updateBy": null,
        "updateTime": null,
        "remark": null,
        "deptId": 285,
        "parentId": 266,
        "ancestors": "0,100,266",
        "deptName": "石泉路街道",
        "orderNum": 2,
        "leader": "",
        "phone": "",
        "email": "",
        "status": "0",
        "delFlag": "0",
        "parentName": null,
        "children": []
    },
    {
        "createBy": "admin",
        "createTime": "2025-01-02 10:52:30",
        "updateBy": null,
        "updateTime": null,
        "remark": null,
        "deptId": 292,
        "parentId": 266,
        "ancestors": "0,100,266",
        "deptName": "长寿路街道",
        "orderNum": 2,
        "leader": "",
        "phone": "",
        "email": "",
        "status": "0",
        "delFlag": "0",
        "parentName": null,
        "children": []
    },
    {
        "createBy": "admin",
        "createTime": "2025-01-02 10:52:39",
        "updateBy": null,
        "updateTime": null,
        "remark": null,
        "deptId": 283,
        "parentId": 266,
        "ancestors": "0,100,266",
        "deptName": "曹杨路街道",
        "orderNum": 2,
        "leader": "",
        "phone": "",
        "email": "",
        "status": "0",
        "delFlag": "0",
        "parentName": null,
        "children": []
    },
    {
        "createBy": "admin",
        "createTime": "2025-01-02 10:52:47",
        "updateBy": null,
        "updateTime": null,
        "remark": null,
        "deptId": 284,
        "parentId": 266,
        "ancestors": "0,100,266",
        "deptName": "宜川路街道",
        "orderNum": 2,
        "leader": "",
        "phone": "",
        "email": "",
        "status": "0",
        "delFlag": "0",
        "parentName": null,
        "children": []
    },
    {
        "createBy": "admin",
        "createTime": "2025-01-02 10:53:03",
        "updateBy": null,
        "updateTime": null,
        "remark": null,
        "deptId": 286,
        "parentId": 266,
        "ancestors": "0,100,266",
        "deptName": "甘泉路街道",
        "orderNum": 2,
        "leader": "",
        "phone": "",
        "email": "",
        "status": "0",
        "delFlag": "0",
        "parentName": null,
        "children": []
    },
    {
        "createBy": "admin",
        "createTime": "2025-01-02 10:53:11",
        "updateBy": null,
        "updateTime": null,
        "remark": null,
        "deptId": 287,
        "parentId": 266,
        "ancestors": "0,100,266",
        "deptName": "真如镇街道",
        "orderNum": 2,
        "leader": "",
        "phone": "",
        "email": "",
        "status": "0",
        "delFlag": "0",
        "parentName": null,
        "children": []
    },
    {
        "createBy": "admin",
        "createTime": "2025-01-02 10:53:17",
        "updateBy": null,
        "updateTime": null,
        "remark": null,
        "deptId": 288,
        "parentId": 266,
        "ancestors": "0,100,266",
        "deptName": "万里街道",
        "orderNum": 2,
        "leader": "",
        "phone": "",
        "email": "",
        "status": "0",
        "delFlag": "0",
        "parentName": null,
        "children": []
    },
    {
        "createBy": "admin",
        "createTime": "2025-01-02 10:53:25",
        "updateBy": null,
        "updateTime": null,
        "remark": null,
        "deptId": 289,
        "parentId": 266,
        "ancestors": "0,100,266",
        "deptName": "长风街道",
        "orderNum": 2,
        "leader": "",
        "phone": "",
        "email": "",
        "status": "0",
        "delFlag": "0",
        "parentName": null,
        "children": []
    },
    {
        "createBy": "admin",
        "createTime": "2025-01-02 10:53:34",
        "updateBy": null,
        "updateTime": null,
        "remark": null,
        "deptId": 290,
        "parentId": 266,
        "ancestors": "0,100,266",
        "deptName": "长征镇",
        "orderNum": 2,
        "leader": "",
        "phone": "",
        "email": "",
        "status": "0",
        "delFlag": "0",
        "parentName": null,
        "children": []
    },
    {
        "createBy": "admin",
        "createTime": "2025-01-02 10:53:43",
        "updateBy": null,
        "updateTime": null,
        "remark": null,
        "deptId": 291,
        "parentId": 266,
        "ancestors": "0,100,266",
        "deptName": "桃浦镇",
        "orderNum": 2,
        "leader": "",
        "phone": "",
        "email": "",
        "status": "0",
        "delFlag": "0",
        "parentName": null,
        "children": []
    },
    {
        "createBy": "admin",
        "createTime": "2025-01-18 11:20:28",
        "updateBy": null,
        "updateTime": null,
        "remark": null,
        "deptId": 313,
        "parentId": 312,
        "ancestors": "0,100,312",
        "deptName": "财政局",
        "orderNum": 1,
        "leader": "",
        "phone": "",
        "email": "",
        "status": "0",
        "delFlag": "0",
        "parentName": null,
        "children": []
    }
]

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