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How to convert object into array in Javascript

I have the below object obj(coming as a JSON response):
var obj = {
0: {
note: 'test1',
id: 24759045,
createTimeStamp: '2022-08-01T17:05:36.750Z',
},
1: {
note: 'test2',
id: 24759045,
createTimeStamp: '2022-08-01T17:05:51.755Z',
},
note: 'test1',
id: 24759045,
createTimeStamp: '2022-08-01T17:05:36.750Z',
};
I only want the objects with numbers("0" , "1" .. so on) to be pushed in an array.
Below is what I am trying to do:
let items = [];
for (var prop in obj) {
items.push(obj[prop]);
}
console.log(items);
// expected output:
[
{
note: 'test1',
id: 24759045,
createTimeStamp: '2022-08-01T17:05:36.750Z',
},
{
note: 'test2',
id: 24759045,
createTimeStamp: '2022-08-01T17:05:51.755Z',
},
]
Any pointers would be highly appreciated.

A few things to consider here.
Are the numeric keys ordered?
Does the order matter?
Are the numeric keys an index of the item in the array?
Are there any gaps in the numeric keys?
First solution, assuming that the numeric keys are the index in the array.
const items = Object.keys(obj).reduce((acc, key) => {
const index = parseInt(key);
if (Number.isNaN(index)) {
return acc;
}
acc[index] = obj[key];
return acc;
}, []);
Second solution, assuming that order matters, but that the numeric keys are not guaranteed to be contiguous.
const items = Object.keys(obj)
.filter((key) => Number.isNaN(parseInt(key)) === false)
.sort()
.map((key) => obj[key]);
Keep in mind that Object.keys does not guarantee that the keys are ordered alpha-numerically. So if order matters, then you have to sort them.
Third solution, if order doesn't matter.
const items = Object.keys(obj)
.filter((key) => Number.isNaN(parseInt(key)) === false)
.map((key) => obj[key]);

var result = [];
var obj = {
"0": {
"note": "test1",
"id": 24759045,
"createTimeStamp": "2022-08-01T17:05:36.750Z"
},
"1": {
"note": "test2",
"id": 24759045,
"createTimeStamp": "2022-08-01T17:05:51.755Z"
},
"note": "test1",
"id": 24759045,
"createTimeStamp": "2022-08-01T17:05:36.750Z"
}
for (var i in obj)
result.push(obj[i]);
$('#result').html(JSON.stringify(result));
<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/1.9.1/jquery.min.js"></script>
<div id="result"></div>
You can achieve this by doing the following steps.
Copied your object below -->
var obj = {
"0": {
"note": "test1",
"id": 24759045,
"createTimeStamp": "2022-08-01T17:05:36.750Z"
},
"1": {
"note": "test2",
"id": 24759045,
"createTimeStamp": "2022-08-01T17:05:51.755Z"
},
"note": "test1",
"id": 24759045,
"createTimeStamp": "2022-08-01T17:05:36.750Z"
}
Created new js array -->
var result = [];
Code -->
for (var i in obj)
result.push(obj[i]);
Find the solution from link below as well --> :) :)
https://jsfiddle.net/kavinduxo/95qnpaed/

I think you'll need to get the keys of the object, filter out the non-numeric ones, then map each key to the obj[key]:
var obj={"0":{"note":"test1","id":24759045,
"createTimeStamp":"2022-08-01T17:05:36.750Z"},"1":{"note":"test2","id":24759045,
"createTimeStamp":"2022-08-01T17:05:51.755Z"},
"note":"test1","id":24759045,"createTimeStamp":"2022-08-01T17:05:36.750Z"};
console.log(
Object.keys(obj)
.filter((key) =>!Number.isNaN(parseInt(key)))
.map((key) => obj[key])
)

How to filter array of objects with nested objects with specific properties?

I am trying to filter a Javascript array of objects with nested objects with specific properties. I can filter the name, slug, website, launch year without any issues. But, I can not filter the category name (category.name) which is an object within the object. Why is filtering the category name not working?
var search = "qui"; // does not work (category.name)
// var search = "Sauer"; // works (name)
var data = [{ "name": "Sauer-Metz", "slug": "ab-laborum",
"website": "https://test.com", "launch_year": 2017, "category_id": 6,
"category": { "id": 6, "name": "qui", "slug": "qui" } } ];
var results = data.filter(company => [
'name', 'launch_year', 'website', 'category.name'
].some(key => String(company[key]).toLowerCase().includes(search.toLowerCase())));
console.log(results);

One way you can go about it is to have a value extractor like the one getKey below
const getKey = (value, key) => {
return key.split('.').reduce((acc, curr) => value[curr], '');
}
var results = data.filter(company => [
'name', 'launch_year', 'website', 'category.name'
].some(key => String(getKey(company, key)).toLowerCase().includes(search.toLowerCase())));

I believe you have to do a separate condition for this specific nested property, although there might be a cleaner way I don't see right now:
var results = data.filter(
(company) =>
["name", "launch_year", "website"].some((key) =>
String(company[key]).toLowerCase().includes(search.toLowerCase())
) ||
String(company["category"]["name"])
.toLowerCase()
.includes(search.toLowerCase())
);

Dot notation doesn't work like that.
const testCase1 = 'qui';
const testCase2 = 'Sauer';
const data = [
{
name: 'Sauer-Metz',
slug: 'ab-laborum',
website: 'https://test.com',
launch_year: 2017,
category_id: 6,
category: { id: 6, name: 'qui', slug: 'qui' },
},
];
const searchResults = (data, search) => {
return data.filter((item) => {
return (
item?.category?.name.toLowerCase().includes(search.toLowerCase()) ||
['name', 'launch_year', 'website'].some((key) => `${item[key]}`.toLowerCase().includes(search.toLowerCase()))
);
});
};
console.log('**CASE 1**')
console.log(searchResults(data, testCase1));
console.log('**CASE 2**')
console.log(searchResults(data, testCase2));

To use your approach you can convert 'category.name' to ['category','name'] and then use String(company[key[0]][key[1]])... whenever key is an array.
const search = "qui"; // does not work (category.name)
//const search = "Sauer"; // works (name)
const data = [{ "name": "Sauer-Metz", "slug": "ab-laborum", "website": "https://test.com", "launch_year": 2017, "category_id": 6, "category": { "id": 6, "name": "qui", "slug": "qui" } } ];
const results = data.filter(
company => [
'name', 'launch_year', 'website', ['category','name']
].some(
key =>
Array.isArray(key) ?
String(company[key[0]][key[1]]).toLowerCase().includes(search.toLowerCase()) :
String(company[key]).toLowerCase().includes(search.toLowerCase())
)
);
console.log(results);

Loop through an object and only return certain keys together with their values

Given the following object, how can I loop through this object inorder to obtain both keys and values but only for the following keys:
"myName": "Demo"
"active": "Y"
"myCode": "123456789"
"myType": 1
let a = {
"values": {
"myName": "Demo",
"active": "Y",
"myCode": "123456789",
"myType": 1,
"myGroups": [
{
"myGroupName": "Group 1",
"myTypes": [
{
"myTypeName": "323232",
"myTypeId": "1"
}
]
},
{
"myGroupName": "Group 2",
"myTypes": [
{
"myTypeName": "523232",
"myTypeId": "2"
}
]
}
]
}
}
I have tried:
for (const [key, value] of Object.entries(a.values)) {
console.log(`${key}: ${value}`);
For}
but this will return all keys with their values.

You can use a dictionary (array) to contain the keys you want to extract the properties for, and then reduce over the values with Object.entries to produce a new object matching only those entries included in the dictionary.
let a = {
"values": {
"myName": "Demo",
"active": "Y",
"myCode": "123456789",
"myType": 1,
"myGroups": [{
"myGroupName": "Group 1",
"myTypes": [{
"myTypeName": "323232",
"myTypeId": "1"
}]
},
{
"myGroupName": "Group 2",
"myTypes": [{
"myTypeName": "523232",
"myTypeId": "2"
}]
}
]
}
}
const arr = [ 'myName', 'active', 'myCode', 'myType' ];
const out = Object.entries(a.values).reduce((acc, [key, value]) => {
if (arr.includes(key)) acc[key] = value;
return acc;
}, {});
console.log(out);

The best answer would be to set up an array of the desired keys and then iterate over that array instead of an array of the original object's entries. This is how you would achieve that:
let a = {
values: {
myName: "Demo",
active: "Y",
myCode: "123456789",
myType: 1,
myGroups: [{
myGroupName: "Group 1",
myTypes: [{
myTypeName: "323232",
myTypeId: "1"
}]
}, {
myGroupName: "Group 2",
myTypes: [{
myTypeName: "523232",
myTypeId: "2"
}]
}]
}
};
const keys = ['myName', 'active', 'myCode', 'myType'];
const cherryPick = (obj, keys) => keys.reduce((a,c) => (a[c] = obj[c], a), {});
console.log(cherryPick(a.values, keys));
The above example will work for many provided keys. If a key does not exist in the supplied object, its value will be undefined. If you want to only keep properties which have values, simply add an optional filter to the cherryPick() function, like this:
let test = {
a: 1,
b: 2
};
const keys = ['a', 'b', 'c'];
const cherryPick = (obj, keys, filter = 0) => keys.filter(key => filter ? obj[key] : 1).reduce((acc,key) => (acc[key] = obj[key], acc), {});
console.log('STORE undefined :: cherryPick(test, keys)', cherryPick(test, keys));
console.log('FILTER undefined :: cherryPick(test, keys, 1)', cherryPick(test, keys, true));
/* Ignore this */ .as-console-wrapper { min-height: 100%; }

Recursively loop through objects of object

I'm trying to write a recursive function to go through an object and return items based off an ID. I can get the first part of this to work, but I'm having a hard time trying to get this function in a recursive manner and could use a fresh set of eyes. The code is below. When you run the snippet, you get an array of 6 items which for the first iteration is what I want, but how can I call my function with the proper parameters to get the nested items? My end goal is to have the all the objects starting with 'Cstm', nested ones too, to be added to the tablesAndValues array. I was trying to model my code after this: Get all key values from multi level nested array JavaScript, but this deals with an array of objects and not an object of objects. Any hint or tips I can get are very appreciated.
JSFiddle: https://jsfiddle.net/xov49jLs/
const response = {
"data": {
"Cstm_PF_ADG_URT_Disposition": {
"child_welfare_placement_value": ""
},
"Cstm_PF_ADG_URT_Demographics": {
"school_grade": "family setting",
"school_grade_code": ""
},
"Cstm_Precert_Medical_Current_Meds": [
{
"med_name": "med1",
"dosage": "10mg",
"frequency": "daily"
},
{
"med_name": "med2",
"dosage": "20mg",
"frequency": "daily"
}
],
"Cstm_PF_ADG_URT_Substance_Use": {
"dimension1_comment": "dimension 1 - tab1",
"Textbox1": "text - tab1"
},
"Cstm_PF_ADG_Discharge_Note": {
"prior_auth_no_comm": "auth no - tab2"
},
"Cstm_PF_ADG_URT_Clinical_Plan": {
"cca_cs_dhs_details": "details - tab2"
},
"container": {
"Cstm_PF_Name": {
"first_name": "same text for textbox - footer",
"last_name": "second textbox - footer"
},
"Cstm_PF_ADG_URT_Demographics": {
"new_field": "mapped demo - footer"
},
"grid2": [
{
"Cstm_PF_ADG_COMP_Diagnosis": {
"diagnosis_label": "knee",
"diagnosis_group_code": "leg"
}
},
{
"Cstm_PF_ADG_COMP_Diagnosis": {
"diagnosis_label": "ankle",
"diagnosis_group_code": "leg"
}
}
]
},
"submit": true
}
};
function getNamesAndValues(data, id) {
const tablesAndValues = [],
res = data;
Object.entries(res).map(([key, value]) => {
const newKey = key.split('_')[0].toLowerCase();
// console.log(newKey) // -> 'cstm'
if (newKey === id) {
tablesAndValues.push({
table: key,
values: value
});
} else {
// I can log value and key and see what I want to push
// to the tablesAndValues array, but I can't seem to get
// how to push the nested items.
// console.log(value);
// console.log(key);
// getNamesAndValues(value, key)
}
});
return tablesAndValues;
}
console.log(getNamesAndValues(response.data, 'cstm'));

To achieve the result with a single push, one can pass the result table to the function when called recursively, but default it to an empty table on the first call. I've also changed .map to .forEach since the return value is not used:
const response = {
"data": {
"Cstm_PF_ADG_URT_Disposition": {
"child_welfare_placement_value": ""
},
"Cstm_PF_ADG_URT_Demographics": {
"school_grade": "family setting",
"school_grade_code": ""
},
"Cstm_Precert_Medical_Current_Meds": [
{
"med_name": "med1",
"dosage": "10mg",
"frequency": "daily"
},
{
"med_name": "med2",
"dosage": "20mg",
"frequency": "daily"
}
],
"Cstm_PF_ADG_URT_Substance_Use": {
"dimension1_comment": "dimension 1 - tab1",
"Textbox1": "text - tab1"
},
"Cstm_PF_ADG_Discharge_Note": {
"prior_auth_no_comm": "auth no - tab2"
},
"Cstm_PF_ADG_URT_Clinical_Plan": {
"cca_cs_dhs_details": "details - tab2"
},
"container": {
"Cstm_PF_Name": {
"first_name": "same text for textbox - footer",
"last_name": "second textbox - footer"
},
"Cstm_PF_ADG_URT_Demographics": {
"new_field": "mapped demo - footer"
},
"grid2": [
{
"Cstm_PF_ADG_COMP_Diagnosis": {
"diagnosis_label": "knee",
"diagnosis_group_code": "leg"
}
},
{
"Cstm_PF_ADG_COMP_Diagnosis": {
"diagnosis_label": "ankle",
"diagnosis_group_code": "leg"
}
}
]
},
"submit": true
}
};
function getNamesAndValues(data, id, tablesAndValues = []) {
const res = data;
Object.entries(res).forEach(([key, value]) => {
const newKey = key.split('_')[0].toLowerCase();
if (newKey === id) {
tablesAndValues.push({
table: key,
values: value
});
} else {
getNamesAndValues( value, id, tablesAndValues); }
});
return tablesAndValues;
}
console.log(getNamesAndValues(response.data, 'cstm'));

You just need to call push to tablesAndValues inside the else statement with the rest operator and pass the value and id as parameters
const response = {
"data": {
"Cstm_PF_ADG_URT_Disposition": {
"child_welfare_placement_value": ""
},
"Cstm_PF_ADG_URT_Demographics": {
"school_grade": "family setting",
"school_grade_code": ""
},
"Cstm_Precert_Medical_Current_Meds": [
{
"med_name": "med1",
"dosage": "10mg",
"frequency": "daily"
},
{
"med_name": "med2",
"dosage": "20mg",
"frequency": "daily"
}
],
"Cstm_PF_ADG_URT_Substance_Use": {
"dimension1_comment": "dimension 1 - tab1",
"Textbox1": "text - tab1"
},
"Cstm_PF_ADG_Discharge_Note": {
"prior_auth_no_comm": "auth no - tab2"
},
"Cstm_PF_ADG_URT_Clinical_Plan": {
"cca_cs_dhs_details": "details - tab2"
},
"container": {
"Cstm_PF_Name": {
"first_name": "same text for textbox - footer",
"last_name": "second textbox - footer"
},
"Cstm_PF_ADG_URT_Demographics": {
"new_field": "mapped demo - footer"
},
"grid2": [
{
"Cstm_PF_ADG_COMP_Diagnosis": {
"diagnosis_label": "knee",
"diagnosis_group_code": "leg"
}
},
{
"Cstm_PF_ADG_COMP_Diagnosis": {
"diagnosis_label": "ankle",
"diagnosis_group_code": "leg"
}
}
]
},
"submit": true
}
};
function getNamesAndValues(data, id) {
const tablesAndValues = [],
res = data;
Object.entries(res).map(([key, value]) => {
const newKey = key.split('_')[0].toLowerCase();
// console.log(newKey) // -> 'cstm'
if (newKey === id) {
tablesAndValues.push({
table: key,
values: value
});
} else {
// I can log value and key and see what I want to push
// to the tablesAndValues array, but I can't seem to get
// how to push the nested items.
// console.log(value);
// console.log(key);
tablesAndValues.push(...getNamesAndValues(value, id))
}
});
return tablesAndValues;
}
console.log(getNamesAndValues(response.data, 'cstm'));
Or in shorter way
function getNamesAndValues2(data, id) {
return Object.entries(data).reduce((arr, [key, value]) => {
arr.push(
...(key.split('_')[0].toLowerCase() === id ? [{ table: key, values: value }] : getNamesAndValues(value, id))
);
return arr
}, []);
}

Here's a working version. I call the main function recursively if the value is either an array or an object. Also passing in the current state of the tallying array each time.
function getNamesAndValues(data, id, tablesAndValues = []) {
const res = data;
Object.entries(res).map(([key, value]) => {
const newKey = key.split('_')[0].toLowerCase();
const item = res[key];
if (newKey === id) {
tablesAndValues.push({
table: key,
values: value
});
}
if(Array.isArray(item)) {
return item.map(el => getNamesAndValues(el, id, tablesAndValues));
}
if(typeof item === 'object') {
return getNamesAndValues(item, id, tablesAndValues);
}
})
return tablesAndValues;
}
console.log(getNamesAndValues(response.data, 'cstm'));

Here's another approach using generators -
const keySearch = (t = [], q = "") =>
filter(t, ([ k, _ ]) => String(k).startsWith(q))
const r =
Array.from
( keySearch(response, "Cstm")
, ([ table, values ]) =>
({ table, values })
)
console.log(r)
[
{
table: 'Cstm_PF_ADG_URT_Disposition',
values: { child_welfare_placement_value: '' }
},
{
table: 'Cstm_PF_ADG_URT_Demographics',
values: { school_grade: 'family setting', school_grade_code: '' }
},
{
table: 'Cstm_Precert_Medical_Current_Meds',
values: [ [Object], [Object] ]
},
{
table: 'Cstm_PF_ADG_URT_Substance_Use',
values: {
dimension1_comment: 'dimension 1 - tab1',
Textbox1: 'text - tab1'
}
},
{
table: 'Cstm_PF_ADG_Discharge_Note',
values: { prior_auth_no_comm: 'auth no - tab2' }
},
{
table: 'Cstm_PF_ADG_URT_Clinical_Plan',
values: { cca_cs_dhs_details: 'details - tab2' }
},
{
table: 'Cstm_PF_Name',
values: {
first_name: 'same text for textbox - footer',
last_name: 'second textbox - footer'
}
},
{
table: 'Cstm_PF_ADG_URT_Demographics',
values: { new_field: 'mapped demo - footer' }
},
{
table: 'Cstm_PF_ADG_COMP_Diagnosis',
values: { diagnosis_label: 'knee', diagnosis_group_code: 'leg' }
},
{
table: 'Cstm_PF_ADG_COMP_Diagnosis',
values: { diagnosis_label: 'ankle', diagnosis_group_code: 'leg' }
}
]
Above, keySearch is simply a specialisation of filter -
function* filter (t = [], test = v => v)
{ for (const v of traverse(t)){
if (test(v))
yield v
}
}
Which is a specialisation of traverse -
function* traverse (t = {})
{ if (Object(t) === t)
for (const [ k, v ] of Object.entries(t))
( yield [ k, v ]
, yield* traverse(v)
)
}
Expand the snippet below to verify the result in your browser -
function* traverse (t = {})
{ if (Object(t) === t)
for (const [ k, v ] of Object.entries(t))
( yield [ k, v ]
, yield* traverse(v)
)
}
function* filter (t = [], test = v => v)
{ for (const v of traverse(t)){
if (test(v))
yield v
}
}
const keySearch = (t = [], q = "") =>
filter(t, ([ k, _ ]) => String(k).startsWith(q))
const response =
{"data":{"Cstm_PF_ADG_URT_Disposition":{"child_welfare_placement_value":""},"Cstm_PF_ADG_URT_Demographics":{"school_grade":"family setting","school_grade_code":""},"Cstm_Precert_Medical_Current_Meds":[{"med_name":"med1","dosage":"10mg","frequency":"daily"},{"med_name":"med2","dosage":"20mg","frequency":"daily"}],"Cstm_PF_ADG_URT_Substance_Use":{"dimension1_comment":"dimension 1 - tab1","Textbox1":"text - tab1"},"Cstm_PF_ADG_Discharge_Note":{"prior_auth_no_comm":"auth no - tab2"},"Cstm_PF_ADG_URT_Clinical_Plan":{"cca_cs_dhs_details":"details - tab2"},"container":{"Cstm_PF_Name":{"first_name":"same text for textbox - footer","last_name":"second textbox - footer"},"Cstm_PF_ADG_URT_Demographics":{"new_field":"mapped demo - footer"},"grid2":[{"Cstm_PF_ADG_COMP_Diagnosis":{"diagnosis_label":"knee","diagnosis_group_code":"leg"}},{"Cstm_PF_ADG_COMP_Diagnosis":{"diagnosis_label":"ankle","diagnosis_group_code":"leg"}}]},"submit":true}}
const result =
Array.from
( keySearch(response, "Cstm")
, ([ table, values ]) =>
({ table, values })
)
console.log(result)

A reasonably elegant recursive answer might look like this:
const getNamesAndValues = (obj) =>
Object (obj) === obj
? Object .entries (obj)
.flatMap (([k, v]) => [
... (k .toLowerCase () .startsWith ('cstm') ? [{table: k, value: v}] : []),
... getNamesAndValues (v)
])
: []
const response = {data: {Cstm_PF_ADG_URT_Disposition: {child_welfare_placement_value: ""}, Cstm_PF_ADG_URT_Demographics: {school_grade: "family setting", school_grade_code: ""}, Cstm_Precert_Medical_Current_Meds: [{med_name: "med1", dosage: "10mg", frequency: "daily"}, {med_name: "med2", dosage: "20mg", frequency: "daily"}], Cstm_PF_ADG_URT_Substance_Use: {dimension1_comment: "dimension 1 - tab1", Textbox1: "text - tab1"}, Cstm_PF_ADG_Discharge_Note: {prior_auth_no_comm: "auth no - tab2"}, Cstm_PF_ADG_URT_Clinical_Plan: {cca_cs_dhs_details: "details - tab2"}, container: {Cstm_PF_Name: {first_name: "same text for textbox - footer", last_name: "second textbox - footer"}, Cstm_PF_ADG_URT_Demographics: {new_field: "mapped demo - footer"}, grid2: [{Cstm_PF_ADG_COMP_Diagnosis: {diagnosis_label: "knee", diagnosis_group_code: "leg"}}, {Cstm_PF_ADG_COMP_Diagnosis: {diagnosis_label: "ankle", diagnosis_group_code: "leg"}}]}, submit: true}}
console .log (getNamesAndValues (response))
.as-console-wrapper {max-height: 100% !important; top: 0}
But this is not as simple as I would like. This code mixes the searching for matches and the test used in that searching together with the formatting of the output. It means that it is a custom function that is both more complex to understand and less reusable than I would like.
I would prefer to use some reusable functions, separating out three feature of this functionality. So, while the following involves more lines of code, I think it makes more sense:
const findAllDeep = (pred) => (obj) =>
Object (obj) === obj
? Object .entries (obj)
.flatMap (([k, v]) => [
... (pred (k, v) ? [[k, v]] : []),
... findAllDeep (pred) (v)
])
: []
const makeSimpleObject = (name1, name2) => ([k, v]) =>
({[name1]: k, [name2]: v})
const makeSimpleObjects = (name1, name2) => (xs) =>
xs .map (makeSimpleObject (name1, name2))
const cstmTest = k =>
k .toLowerCase () .startsWith ('cstm')
const getNamesAndValues = (obj) =>
makeSimpleObjects ('table', 'values') (findAllDeep (cstmTest) (obj))
const response = {data: {Cstm_PF_ADG_URT_Disposition: {child_welfare_placement_value: ""}, Cstm_PF_ADG_URT_Demographics: {school_grade: "family setting", school_grade_code: ""}, Cstm_Precert_Medical_Current_Meds: [{med_name: "med1", dosage: "10mg", frequency: "daily"}, {med_name: "med2", dosage: "20mg", frequency: "daily"}], Cstm_PF_ADG_URT_Substance_Use: {dimension1_comment: "dimension 1 - tab1", Textbox1: "text - tab1"}, Cstm_PF_ADG_Discharge_Note: {prior_auth_no_comm: "auth no - tab2"}, Cstm_PF_ADG_URT_Clinical_Plan: {cca_cs_dhs_details: "details - tab2"}, container: {Cstm_PF_Name: {first_name: "same text for textbox - footer", last_name: "second textbox - footer"}, Cstm_PF_ADG_URT_Demographics: {new_field: "mapped demo - footer"}, grid2: [{Cstm_PF_ADG_COMP_Diagnosis: {diagnosis_label: "knee", diagnosis_group_code: "leg"}}, {Cstm_PF_ADG_COMP_Diagnosis: {diagnosis_label: "ankle", diagnosis_group_code: "leg"}}]}, submit: true}}
console .log (findAllDeep (cstmTest) (response))
.as-console-wrapper {max-height: 100% !important; top: 0}
These are all helper functions of varying degree of reusability:
makeSimpleObject takes two key names, say 'foo', and 'bar' and returns a function which takes a two-element array, say [10, 20] and returns an object matching those up, like {foo: 10, bar: 20}
makeSimpleObjects does the same thing for an array of two-element arrays: makeSimpleObjects('foo', 'bar')([[8, 6], [7, 5], [30, 9]]) //=> [{foo: 8, bar: 6}, {foo: 7, bar: 5}, {foo: 30, bar: 9}].
cstmTest is a simple predicate to test whether a key begins (case-insensitively) with "cstm".
and findAllDeep takes a predicate and returns a function which takes an object and returns an array of two-element arrays, holding the keys/value pairs for any items which match the predicate. (The predicate is supplied both the key and the value; in the current case we only need the key, but it seems sensible for the function to take either.
Our main function, getNamesAndValues, uses findAllDeep (cstmTest) to find the matching values and then makeSimpleObjects ('table', 'values') to convert the result to the final format.
Note that findAllDeep, makeSimpleObject, and makeSimpleObjects are all functions likely to be useful elsewhere. The customization here is only in cstmTest and in the short definition for getNamesAndValues. I would count that as a win.

Categorisation of objects by comparing two objects in javascript

I am trying to categorise the objects by comparing two objects say data and categories
const data = {
"1a": {
"name": "1a",
"count": 154
},
"1b": {
"name": "1b",
"count": 765
},
"1c": {
"name": "1c",
"count": 7877
},
"777": {
"name": "777",
"count": 456
}
};
const categories = {
"A_category":["A","1a", "2a"],
"B_category":["1b", "2b"],
"C_category":["1c", "2c"],
"D_category":["1d", "2d"]
};
I want to group the data based on the category object, when there is no match the group should be others and the resultant data should be like
const resultData = [
{ group: 'Others', name: '777', count: 456 },
{ group: 'A_category', name: '1a', count: 154 },
{ group: 'B_category', name: '1b', count: 765 },
{ group: 'C_category', name: '1c', count: 7877 }
]
I used the function but not able to achieve the result
const resultData = [];
function restructure(data, categories) {
Object.keys(data).map(
dataKey => {
for (let [key, value] of Object.entries(categories)) {
value.includes(dataKey) ? resultData.push({"group": key,...data[dataKey]}) : resultData.push({"group": "Others",...data[dataKey]}) ;
break;
}
}
)
}
restructure(data,categories);

You can try this as well. Iterate over your data entries and find whether the key exists in any of the categories object data and push it into the array with found category as group or push it with Others as group as shown in the below code
const data = {
"1a": {
"name": "1a",
"count": 154
},
"1b": {
"name": "1b",
"count": 765
},
"1c": {
"name": "1c",
"count": 7877
},
"777": {
"name": "777",
"count": 456
}
};
const categories = {
"A_category": ["A", "1a", "2a"],
"B_category": ["1b", "2b"],
"C_category": ["1c", "2c"],
"D_category": ["1d", "2d"]
};
const resultData = [];
Object.entries(data).map(([key, val])=>{
let group = Object.keys(categories).find(category=>categories[category].includes(key)) || 'Others'
resultData.push({
group,
...val
})
})
console.log(resultData)

Instead of for loop you need to use filter as let category = Object.entries(categories).filter(([key, value]) => value.includes(dataKey));.
If category.length > 0 then category is available else use Others.
Try it below.
const data = {
"1a": {
"name": "1a",
"count": 154
},
"1b": {
"name": "1b",
"count": 765
},
"1c": {
"name": "1c",
"count": 7877
},
"777": {
"name": "777",
"count": 456
}
};
const categories = {
"A_category": ["A", "1a", "2a"],
"B_category": ["1b", "2b"],
"C_category": ["1c", "2c"],
"D_category": ["1d", "2d"]
};
const resultData = [];
function restructure(data, categories) {
Object.keys(data).map(
dataKey => {
let category = Object.entries(categories)
.filter(([key, value]) => value.includes(dataKey));
resultData.push({
"group": category.length > 0 ? category[0][0] : "Others",
...data[dataKey]
});
})
}
restructure(data, categories);
console.log(resultData);

That's because you're breaking out of the loop regardless of whether you found the category or not. Your for loop will only execute once then breaks immediately. If the first category object matches, it is used, if not "Others" is assigned and the loop exits without checking the rest of the categories. Only break out of the loop if the lookup is successful:
for (let [key, value] of Object.entries(categories)) {
if(value.includes(dataKey)) { // if this is the category
resultData.push({ "group": key, ...data[dataKey] }); // use it ...
return; // ... and break the loop and the current iteration of forEach. The current object is handled
}
}
resultData.push({ "group": "Others", ...data[dataKey] }); // if the return statement above is never reached, that means the category was not found, assign "Others"
BTW, you can use other array methods to shorten things out like so:
function restructure(data, categories) {
return Object.keys(data).map(key => ({
"group": Object.keys(categories).find(cat => categories[cat].includes(key)) || "Others",
...data[key]
}));
}
Then use like so:
const resultData = restructure(data, categories);
My method uses find to try to find a category key that contains the name of the object, if find fails, it returns null at which point, the || "Others" part is evaluated and "Others" will be used as the group name (Does JavaScript have "Short-circuit" evaluation?).
Demo:
const data = {"777":{"name":"777","count":456},"1a":{"name":"1a","count":154},"1b":{"name":"1b","count":765},"1c":{"name":"1c","count":7877}};
const categories = {"A_category":["A","1a","2a"],"B_category":["1b","2b"],"C_category":["1c","2c"],"D_category":["1d","2d"]};
function restructure(data, categories) {
return Object.keys(data).map(key => ({
"group": Object.keys(categories).find(cat => categories[cat].includes(key)) || "Others",
...data[key]
}));
}
const resultData = restructure(data, categories);
console.log(resultData);