js 数据组合，一级结构组合成父子嵌套数组结构

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：

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101,"parentId": 100,"ancestors": "0,100","deptName": "上海联通分公司","orderNum": 1,"leader": "若依","phone": "15888888888","email": "[e-mail]","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": "[e-mail]","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": "[e-mail]","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": []}
]