如何使用JavaScript根据键和值映射对象？
我想通过对象键对对象数组进行分组，然后根据分组创建一个新的对象数组。我在下面展示我的物品如何使用JavaScript根据键和值映射对象？,javascript,arrays,Javascript,Arrays,我想通过对象键对对象数组进行分组，然后根据分组创建一个新的对象数组。我在下面展示我的物品 var oldArr=[ { "_id":"5c407834953d7f420d56f866", "allocated_to":"FIELD", "zone":"NORTH", "state":"DELHI", "location":"NEW DELHI", "cu
var oldArr=[
{
"_id":"5c407834953d7f420d56f866",
"allocated_to":"FIELD",
"zone":"NORTH",
"state":"DELHI",
"location":"NEW DELHI",
"customer_name":"REET INFOTECH",
"bank_name_of_customer":"YES BANK",
"cl_contract_id":"LAI-00016881",
"lk_loan_account_id":"LK0000015094",
"front_end_manager_name":"SONAL",
"area_collection_manager":"ASHIS JENA",
"installment_date":"",
"collection_manager":"",
},
{
"_id":"5c407834953d7f420d56f867",
"allocated_to":"FIELD",
"zone":"NORTH",
"state":"DELHI",
"location":"Sree Nagar",
"customer_name":"REET",
"bank_name_of_customer":"Corporate BANK",
"cl_contract_id":"LAI-00016881",
"lk_loan_account_id":"LK0000015094",
"front_end_manager_name":"SONAL",
"area_collection_manager":"ASHIS JENA",
"installment_date":"",
"collection_manager":"",
},
{
"_id":"5c407834953d7f420d56f868",
"allocated_to":"FIELD",
"zone":"EAST",
"state":"Odisha",
"location":"Bhubaneswar",
"customer_name":"REET",
"bank_name_of_customer":"PNB BANK",
"cl_contract_id":"LAI-00016881",
"lk_loan_account_id":"LK0000015094",
"front_end_manager_name":"SONAL",
"area_collection_manager":"ASHIS JENA",
"installment_date":"",
"collection_manager":"",
},
{
"_id":"5c407834953d7f420d56f890",
"allocated_to":"FIELD",
"zone":"EAST",
"state":"Assam",
"location":"Gawhati",
"customer_name":"REET",
"bank_name_of_customer":"SBI BANK",
"cl_contract_id":"LAI-00016881",
"lk_loan_account_id":"LK0000015094",
"front_end_manager_name":"SONAL",
"area_collection_manager":"ASHIS JENA",
"installment_date":"",
"collection_manager":"",
}
]
区域、状态、位置进行分组，格式如下所示
newdata={
zone_list: [{
zone: NORTH,
state_list: [{
state: DELHI,
location_list: [{
location: NEW DELHI,
task_list: [{
user_pkId: 5c407834953d7f420d56f866,
front_end_manager_name: SONAL,
collection_manager: "",
area_collection_manager: ASHIS JENA,
loan_accounts_assigned: [{
allocated_to: FIELD,
lk_loan_account_id: LK0000015094,
cl_contract_id: LAI-00016881,
customer_name: REET INFOTECH,
customer_bank_name: YES BANK,
}]
}]
}]
},{
state: JK,
location_list: [{
location: Sree Nagar,
task_list: [{
user_pkId: 5c407834953d7f420d56f867,
front_end_manager_name: SONAL,
collection_manager: "",
area_collection_manager: ASHIS JENA,
loan_accounts_assigned: [{
allocated_to: FIELD,
lk_loan_account_id: LK0000015094,
cl_contract_id: LAI-00016881,
customer_name: REET INFOTECH,
customer_bank_name: Corporate BANK,
}]
}]
}]
}]
},{
zone: EAST,
state_list: [{
state: Odisha,
location_list: [{
location: Bhubaneswar,
task_list: [{
user_pkId: 5c407834953d7f420d56f868,
front_end_manager_name: SONAL,
collection_manager: "",
area_collection_manager: ASHIS JENA,
loan_accounts_assigned: [{
allocated_to: FIELD,
lk_loan_account_id: LK0000015094,
cl_contract_id: LAI-00016881,
customer_name: REET INFOTECH,
customer_bank_name: SBI BANK,
}]
}]
}]
}]
}]
}
我在下面提供我的代码
var zonelist=[];
var statelist=[];
var locationlist=[];
var tasklist=[];
var loanarr=[];
var finalArr=[];
for(var i=0;i<dataArr.length;i++){
if (zonelist.length > 0) {
var hasZone=false;
var zoneindex='';
for(var j=0;j<zonelist.length;j++){
if (dataArr[i]['zone']==zonelist[j]['zone']) {
hasZone=true;
zoneindex=j;
break;
}
}
if (hasZone==true) {
var hasState=false;
var stateindex='';
for(var k=0;k<zonelist[zoneindex]['state_list'].length;k++){
if (dataArr[i]['state']==zonelist[zoneindex]['state_list'][k]['state']) {
hasState=true;
stateindex=k;
}
}
if (hasState==true) {
var haslocation=false;
var locindex='';
for(var l=0;l<zonelist[zoneindex]['state_list'][stateindex]['location_list'].length;l++){
if (dataArr[i]['location']==zonelist[zoneindex]['state_list'][stateindex]['location_list'][l]['location']) {
haslocation=true;
locindex=l;
}
}
if (haslocation==true) {
var hasUser=false;
var userindex='';
}else{
var dataloan={'allocated_to':dataArr[i]['allocated_to'],'lk_loan_account_id':dataArr[i]['lk_loan_account_id'],'cl_contract_id':dataArr[i]['cl_contract_id'],'customer_name':dataArr[i]['customer_name'],'customer_bank_name':dataArr[i]['bank_name_of_customer']};
loanarr.push(datatask);
var datatask={'user_pkId':dataArr[i]['_id'],'front_end_manager_name':dataArr[i]['front_end_manager_name'],'collection_manager':dataArr[i]['collection_manager'],'area_collection_manager':dataArr[i]['area_collection_manager'],'loan_accounts_assigned':loanarr};
tasklist.push(datatask);
var dataloc={'location':dataArr[i]['location'],'task_list':tasklist};
locationlist.push(dataloc);
}
}else{
var dataloan={'allocated_to':dataArr[i]['allocated_to'],'lk_loan_account_id':dataArr[i]['lk_loan_account_id'],'cl_contract_id':dataArr[i]['cl_contract_id'],'customer_name':dataArr[i]['customer_name'],'customer_bank_name':dataArr[i]['bank_name_of_customer']};
loanarr.push(datatask);
var datatask={'user_pkId':dataArr[i]['_id'],'front_end_manager_name':dataArr[i]['front_end_manager_name'],'collection_manager':dataArr[i]['collection_manager'],'area_collection_manager':dataArr[i]['area_collection_manager'],'loan_accounts_assigned':loanarr};
tasklist.push(datatask);
var dataloc={'location':dataArr[i]['location'],'task_list':tasklist};
locationlist.push(dataloc);
var datastate={'state':dataArr[i]['state'],'location_list':locationlist};
statelist.push(datastate);
}
}else{
var dataloan={'allocated_to':dataArr[i]['allocated_to'],'lk_loan_account_id':dataArr[i]['lk_loan_account_id'],'cl_contract_id':dataArr[i]['cl_contract_id'],'customer_name':dataArr[i]['customer_name'],'customer_bank_name':dataArr[i]['bank_name_of_customer']};
loanarr.push(datatask);
var datatask={'user_pkId':dataArr[i]['_id'],'front_end_manager_name':dataArr[i]['front_end_manager_name'],'collection_manager':dataArr[i]['collection_manager'],'area_collection_manager':dataArr[i]['area_collection_manager'],'loan_accounts_assigned':loanarr};
tasklist.push(datatask);
var dataloc={'location':dataArr[i]['location'],'task_list':tasklist};
locationlist.push(dataloc);
var datastate={'state':dataArr[i]['state'],'location_list':locationlist};
statelist.push(datastate);
var datazone={'zone':dataArr[i]['zone'],'state_list':statelist};
zonelist.push(datazone);
}
}else{
var dataloan={'allocated_to':dataArr[i]['allocated_to'],'lk_loan_account_id':dataArr[i]['lk_loan_account_id'],'cl_contract_id':dataArr[i]['cl_contract_id'],'customer_name':dataArr[i]['customer_name'],'customer_bank_name':dataArr[i]['bank_name_of_customer']};
loanarr.push(dataloan);
var datatask={'user_pkId':dataArr[i]['_id'],'front_end_manager_name':dataArr[i]['front_end_manager_name'],'collection_manager':dataArr[i]['collection_manager'],'area_collection_manager':dataArr[i]['area_collection_manager'],'loan_accounts_assigned':loanarr};
tasklist.push(datatask);
var dataloc={'location':dataArr[i]['location'],'task_list':tasklist};
locationlist.push(dataloc);
var datastate={'state':dataArr[i]['state'],'location_list':locationlist};
statelist.push(datastate);
var datazone={'zone':dataArr[i]['zone'],'state_list':statelist};
zonelist.push(datazone);
}
}
var findata={'zone_list':zonelist};
console.log('finaldata',findata);
var zonelist=[]；
var statelist=[]；
var locationlist=[]；
var tasklist=[]；
var Loanar=[]；
var finalArr=[]；
对于（变量i=0；i 0）{
var hasZone=假；
var zoneindex=“”；
对于（var j=0；j，下面的代码并不能给出完全正确的结果，但您应该对如何实现这一点有更好的认识。
.reduce（）的引用是：
var oldArr=[
{
“id”：“5c407834953d7f420d56f866”，
“分配给”：“字段”，
“区域”：“北部”，
“国家”：“德里”，
“地点”：“新德里”，
“客户名称”：“REET INFOTECH”
},
{
“id”：“5c407834953d7f420d56f867”，
“分配给”：“字段”，
“区域”：“北部”，
“州”：“JK”，
“地点”：“Sree Nagar”，
“客户名称”：“REET”
},
{
“id”：“5c407834953d7f420d56f868”，
“分配给”：“字段”，
“区域”：“东部”，
“国家”：“奥迪沙”，
“地点”：“布巴内斯瓦尔”，
“客户名称”：“REET”
}
]
让结果=oldArr.reduce(
功能（acc、curr）{
var sameZone=acc.find（函数（accData）{return accData.zone===curr.zone}）
如果（sameZone）{
sameZone.state_list.push({
州：当前州，
任务列表：[{
用户密钥：curr.id，
贷款账户分配：[{
客户名称：当前客户名称
}]
}]
})
}否则{
加速推({
区域：当前区域，
州清单：[{
州：当前州，
任务列表：[{
用户密钥：curr.id，
贷款账户分配：[{
客户名称：当前客户名称
}]
}]
}]
})
}
返回acc；
}, []);
log（result）；
您可以为想要的组和相关键获取一个数组，并采用迭代和递归的方法
var数据=[{u id:“5C4078353D7F420D56F866”，分配给：“现场”，区域：“北部”，州：“德里”，地点：“新德里”，客户名称：“REET INFOTECH”，银行名称客户：“是的银行”，合同id:“LAI-0001681”，贷款账户id:“LK0000015094”，前端经理名称：“SONAL”，区域收款经理：“ASHIS JENA”，分期付款日期：“，”收款人：“}，{id:“5c407834953d7f420d56f867”，分配给：“现场”，区域：“北部”，州：“德里”，地点：“Sree Nagar”，客户名称：“REET”，客户的银行名称：“公司银行”，合同id:“LAI-0001681”，贷款账户id:“LK0000015094”，前端经理名称：“SONAL”地区收款经理：“ASHIS JENA”，分期付款日期：“，”收款经理：“，”{id:“5c407834953d7f420d56f868”，分配给：“现场”，区域：“东部”，州：“Odisha”，地点：“Bhubaneswar”，客户名称：“REET”，客户的银行名称：“PNB银行”，cl合同id:“LAI-00016881”，lk贷款账户id:“LK0000015094”，前端经理姓名：“SONAL”，区域收款经理：“ASHIS JENA”，分期付款日期：“，收款经理：”，{id:“5C4078349D3D7F420D56F890”，分配给：“FIELD”，zone:“EAST”，state:“Assam”，地点：“Gawhati”，客户名称：“REET”，客户银行名称：“SBI银行”，cl合同id:“LAI-0001681”，lk贷款账户id:“LK0000015094”，前端经理姓名：“SONAL”，区域收藏经理：“ASHIS JENA”，分期付款日期：，收藏经理：”}，
组=[
[“区域列表”，“区域”]，
['state_list'，'state']，
[“位置列表”，“位置”]，
['task_list'、'u id'、'front_end_manager_name'、'area_collection_manager'、'collection_manager']，
['loan_accounts_assigned'、'lk_loan_account_id'、'assigned_to'、'cl_contract_id'、'customer_name'、'bank_name_of_customer']
],
结果=数据。减少（（r，o）=>{
减少（（t，[组，…键]）=>{
var temp=（t[group]=t[group]| |[]）。find（p=>o[keys[0]]==p[keys[0]]）；
如果（！temp）{
temp=Object.assign（{}，…keys.map（k=>（{[k]：o[k]}））；
t[组]。推送（温度）；
}
返回温度；
}，r）；
返回r；
}, {});
console.log（结果）；
。作为控制台包装器{max height:100%！important；top:0；}
你能告诉我们你已经尝试了什么吗？：-）你应该知道看到你的名声，你不会要求代码，而是发布你自己的代码，人们会帮助你调试。当你点击创建此帖子时，按钮上写着“提问”。但是“我想要”或“我需要”"这不是一个问题。我们将帮助您修复bug，而不仅仅是完全为您完成工作。您做了哪些研究？您尝试了哪些代码？您面临哪些问题？请阅读更多关于如何提出有用问题的指导。旁白：人们问了很多此类问题……我相信您可以通过搜索旧问题获得一些想法选项，以及读取PHP文档等。想要的结果与给定的数据不匹配。请根据数据添加想要的结果，反之亦然。请添加代码，您已经尝试过了。@NinaScholz:我已经给出了我的尝试过的代码。@NinaScholz:是。loan\u accounts\u assigned
应该是一个数组对象。您明白了。是的，我确实喜欢groups=['zone\u list'、'zone']、['state\u list'、['location\u list'、'location']、['task\u list'、'task\u list']]、finalGroup='loan\u accounts\u assigned'、
但所有数据都附加到loan\u accounts\u assigned
中，其中一些数据将保留在此处