We Keep Coding

typescript: traverse nested array of objects until condition is met

I have nested array like following.
const tree = {
"id": 1,
"name": "mainOrgName",
"children": [
{
"id": 10,
"name": "East Region",
"children": [
{
"id": 11,
"name": "test east sub 1",
"children": [
{
"id": 12,
"name": "sub 22 sub 1",
"children": [
{
"id": 15,
"name": "sub 333 of sub ",
"children": [
{
"id": 16,
"name": "sub 4444",
"children": []
}
]
}
]
}
]
}
]
},
{
"id": 13,
"name": "west region",
"children": [
{
"id": 14,
"name": "test west sub 1",
"children": []
}
]
}
]
}
I need to traverse through tree.children array to get all id and name of sub arrays and its children until we didn't find children array empty. (Note: children array may be empty or may have further levels)
I need result like follows
Expected result
[
{
"name": "East Region",
"value": 10,
"selected": false
},
{
"name": "test east sub 1",
"value": 11,
"selected": false
},
{
"name": "sub 22 sub 1",
"value": 12,
"selected": false
},
{
"name": "sub 333 of sub",
"value": 15,
"selected": false
},
{
"name": "sub 4444",
"value": 16,
"selected": false
},
{
"name": "west region",
"value": 13,
"selected": false
},
{
"name": "test west sub 1",
"value": 14,
"selected": false
},
]
I tried following
const candidates = tree.children.map(org => ({name: org.name, value: org.id, selected: false}));
but it gives me following
[
{
"name": "East Region",
"value": 10,
"selected": false
},
{
"name": "west region",
"value": 13,
"selected": false
}
]
I am trying to get that but not sure how I can put condition that traverse until children is empty and push required fields in final array in required format. May need recursive/call back functions but not sure how I can use that.
Please help to get expected result. Thanks

Try this,
const tree = {
"id": 1,
"name": "mainOrgName",
"children": [
{
"id": 10,
"name": "East Region",
"children": [{
"id": 11,
"name": "test east sub 1",
"children": [{
"id": 12,
"name": "sub 22 sub 1",
"children": [{
"id": 15,
"name": "sub 333 of sub ",
"children": [{
"id": 16,
"name": "sub 4444",
"children": []
}]
}]
}]
}]
},
{
"id": 13,
"name": "west region",
"children": [{
"id": 14,
"name": "test west sub 1",
"children": []
}]
}
]
}
let items = []
let result = lootIt(tree.children)
console.log(result)
function lootIt (arr) {
for(let i = 0 ; i< arr.length ; i++){
let obj = {}
obj['name'] = arr[i]['name']
obj['value'] = arr[i]['id']
obj['selected'] = false
items.push(obj)
if(arr[i].children !== 0){
lootIt(arr[i].children)
}
}
return items
}

You can use recursion to do it
const tree = {
"id": 1,
"name": "mainOrgName",
"children": [
{
"id": 10,
"name": "East Region",
"children": [
{
"id": 11,
"name": "test east sub 1",
"children": [
{
"id": 12,
"name": "sub 22 sub 1",
"children": [
{
"id": 15,
"name": "sub 333 of sub ",
"children": [
{
"id": 16,
"name": "sub 4444",
"children": []
}
]
}
]
}
]
}
]
},
{
"id": 13,
"name": "west region",
"children": [
{
"id": 14,
"name": "test west sub 1",
"children": []
}
]
}
]
}
function mapTree(children){
let result =[]
for(c of children){
result.push({name: c.name, value: c.id, selected: false})
result = result.concat(mapTree(c.children))
}
return result
}
console.log(mapTree(tree.children))

Return children tree from array

I have an array of regions the highest region has key: 10 and parent_id: null and I want to restructure this array to return a tree.
Regions tree should look like if the input is [10]
Egypt
Zone 1
Tagamo3
Giza
Helwan
Fayoum
Zone 2
Gesr ElSuis
test
Delta
Mohandeseen
Down Town
Array:
[
{
"key": 1,
"title": "Zone 1",
"parent_id": 10
},
{
"key": 2,
"title": "Zone 2",
"parent_id": 10
},
{
"key": 3,
"title": "Tagamo3",
"parent_id": 1
},
{
"key": 4,
"title": "Gesr ElSuis",
"parent_id": 2
},
{
"key": 5,
"title": "Delta",
"parent_id": 2
},
{
"key": 6,
"title": "Mohandeseen",
"parent_id": 2
},
{
"key": 7,
"title": "Giza",
"parent_id": 1
},
{
"key": 8,
"title": "Helwan",
"parent_id": 1
},
{
"key": 9,
"title": "Down Town",
"parent_id": 2
},
{
"key": 10,
"title": "Egypt",
"parent_id": null
},
{
"key": 11,
"title": "Fayoum",
"parent_id": 1
},
{
"key": 12,
"title": "test",
"parent_id": 4
}
]
The output I want to achieve if input is [10]:
[
{
"key": 10,
"title": "Egypt",
"parent_id": null,
"children": [
{
"key": 1,
"title": "Zone 1",
"parent_id": 10,
"children": [
{
"key": 3,
"title": "Tagamo3",
"parent_id": 1,
"children": []
},
{
"key": 7,
"title": "Giza",
"parent_id": 1,
"children": []
},
{
"key": 8,
"title": "Helwan",
"parent_id": 1,
"children": []
},
{
"key": 11,
"title": "Fayoum",
"parent_id": 1,
"children": []
}
]
},
{
"key": 2,
"title": "Zone 2",
"parent_id": 10,
"children": [
{
"key": 4,
"title": "Gesr ElSuis",
"parent_id": 2,
"children": [
{
"key": 12,
"title": "test",
"parent_id": 4,
"children": []
}
]
},
{
"key": 5,
"title": "Delta",
"parent_id": 2,
"children": []
},
{
"key": 6,
"title": "Mohandeseen",
"parent_id": 2,
"children": []
},
{
"key": 9,
"title": "Down Town",
"parent_id": 2,
"children": []
}
]
}
]
}
]
Regions tree should look like if the input is [1,2]
Zone 1
Tagamo3
Giza
Helwan
Fayoum
Zone 2
Gesr ElSuis
test
Delta
Mohandeseen
Down Town
Regions tree should look like if the input is [1]
Zone 1
Tagamo3
Giza
Helwan
Fayoum

May not be the most optimized, but I gave it a try:
const arr = [{key:1,title:"Zone 1",parent_id:10},{key:2,title:"Zone 2",parent_id:10},{key:3,title:"Tagamo3",parent_id:1},{key:4,title:"Gesr ElSuis",parent_id:2},{key:5,title:"Delta",parent_id:2},{key:6,title:"Mohandeseen",parent_id:2},{key:7,title:"Giza",parent_id:1},{key:8,title:"Helwan",parent_id:1},{key:9,title:"Down Town",parent_id:2},{key:10,title:"Egypt",parent_id:null},{key:11,title:"Fayoum",parent_id:1},{key:12,title:"test",parent_id:4}];
const buildTree = key => arr.filter(x => x.parent_id === key)
.map(x => ({ ...x, children: buildTree(x.key) }));
console.log(buildTree(null));
To build multiple trees, this could work:
const arr = [{key:1,title:"Zone 1",parent_id:10},{key:2,title:"Zone 2",parent_id:10},{key:3,title:"Tagamo3",parent_id:1},{key:4,title:"Gesr ElSuis",parent_id:2},{key:5,title:"Delta",parent_id:2},{key:6,title:"Mohandeseen",parent_id:2},{key:7,title:"Giza",parent_id:1},{key:8,title:"Helwan",parent_id:1},{key:9,title:"Down Town",parent_id:2},{key:10,title:"Egypt",parent_id:null},{key:11,title:"Fayoum",parent_id:1},{key:12,title:"test",parent_id:4}];
const buildNode = x => ({...x, children: buildTree(x.key)});
const buildTree = key => arr.filter(x => x.parent_id === key)
.map(buildNode);
const buildTrees = keys => arr.filter(x => keys.includes(x.key))
.map(buildNode);
console.log(buildTrees([1, 2]));

based on jcalz snippet, but requires only a single pass over the input array.
const arr = [{key:1,title:"Zone 1",parent_id:10},{key:2,title:"Zone 2",parent_id:10},{key:3,title:"Tagamo3",parent_id:1},{key:4,title:"Gesr ElSuis",parent_id:2},{key:5,title:"Delta",parent_id:2},{key:6,title:"Mohandeseen",parent_id:2},{key:7,title:"Giza",parent_id:1},{key:8,title:"Helwan",parent_id:1},{key:9,title:"Down Town",parent_id:2},{key:10,title:"Egypt",parent_id:null},{key:11,title:"Fayoum",parent_id:1},{key:12,title:"test",parent_id:4}];
/*const lookup: Record<number|"roots", Tree[]> = { roots: [] };*/
const lookup = { roots: [] };
for (const item of arr) {
// get or create the "children" array for my parent.
// parent may not be known yet, but I'm already collecting its children, my siblings.
const siblings = lookup[item.parent_id ?? "roots"] ??= [];
// add myself to that children array.
siblings.push({
...item,
// get or create my children array.
children: lookup[item.key] ??= []
});
}
// it's up to you to handle `lookup.roots.length !== 1`
console.log(lookup.roots);
.as-console-wrapper{top:0;max-height:100%!important}

Find empty arrays in nested array and remove them in Javascript

I have a nested and hierarchical array of objects, which looks like this
[{
"id": 0,
"name": "E00-E90 Stoffwechselstörungen",
"parentId": null,
"children": [{
"id": 1,
"name": "E70-E90 Stoffwechselstörungen",
"parentId": 0,
"children": [{
"id": 2,
"name": "E70.- Störungen des Stoffwechsels aromatischer Aminosäuren",
"parentId": 1,
"children": []
}, {
"id": 3,
"name": "E71.- Störungen des Stoffwechsels verzweigter Aminosäuren und des Fettsäurestoffwechsels",
"parentId": 1,
"children": []
}, {
"id": 4,
"name": "E72.- Sonstige Störungen des Aminosäurestoffwechsels",
"parentId": 1,
"children": []
},
...
Now I want to remove the empty array "children": [] from the last children.
I've tried it with reduce but it doesn't work without any error.
var lastElementLength = list.length - 1
const findItemNested = (arr, itemId, nestingKey) => (
arr.reduce((a, item) => {
if (a) return a;
if (item.id === itemId) return item;
if (item[nestingKey]) return findItemNested(item[nestingKey], itemId, nestingKey)
}, null)
);
const resEmptyChildren = findItemNested(roots, lastElementLength, "children");
console.log('resEmptyChildren', resEmptyChildren)

You could use recursion for that.
var tInput = [{
"id": 0,
"name": "E00-E90 Stoffwechselstörungen",
"parentId": null,
"children": [{
"id": 1,
"name": "E70-E90 Stoffwechselstörungen",
"parentId": 0,
"children": [{
"id": 2,
"name": "E70.- Störungen des Stoffwechsels aromatischer Aminosäuren",
"parentId": 1,
"children": []
}, {
"id": 3,
"name": "E71.- Störungen des Stoffwechsels verzweigter Aminosäuren und des Fettsäurestoffwechsels",
"parentId": 1,
"children": []
}, {
"id": 4,
"name": "E72.- Sonstige Störungen des Aminosäurestoffwechsels",
"parentId": 1,
"children": []
}]
}]
}];
(function removeEmptyChildrenProperties(input){
console.log('Checking id:', input.id);
if(input.hasOwnProperty('children')){
if(input.children && input.children.length){
input.children.forEach(removeEmptyChildrenProperties)
}
else{
console.log('Remove children on id:', input.id);
delete input.children
}
};
return input
}).apply(null, tInput);
console.log(JSON.stringify(tInput));

How to remove all empty array childrens [] from a nested JSON recursively [closed]

Closed. This question needs debugging details. It is not currently accepting answers.
Edit the question to include desired behavior, a specific problem or error, and the shortest code necessary to reproduce the problem. This will help others answer the question.
Closed 3 years ago.
Improve this question
I've a JSON response as below.I'm using nested JSON data from my GeoRegionCountries APIController & custom class TreeView is used to format the data as per the required nested structure of plugin I'm using. I am using a combo multi select Treeview using this jquery plugin Multi-Select Drop Down Tree Plugin you can see it by this link jquery plugin Multi-Select Drop Down Tree Plugin
[
{
"Id": 1,
"Title": "United States",
"ParentId": null,
"Subs": [
{
"Id": 7,
"Title": "Northwest",
"ParentId": 1,
"Subs": []
},
{
"Id": 8,
"Title": "Northeast",
"ParentId": 1,
"Subs": []
},
{
"Id": 9,
"Title": "Central",
"ParentId": 1,
"Subs": []
},
{
"Id": 10,
"Title": "Southwest",
"ParentId": 1,
"Subs": []
},
{
"Id": 18,
"Title": "Southeast",
"ParentId": 1,
"Subs": []
}
]
},
{
"Id": 2,
"Title": "Canada",
"ParentId": null,
"Subs": []
},
{
"Id": 3,
"Title": "France",
"ParentId": null,
"Subs": []
},
{
"Id": 4,
"Title": "Germany",
"ParentId": null,
"Subs": []
},
{
"Id": 5,
"Title": "Australia",
"ParentId": null,
"Subs": []
},
{
"Id": 6,
"Title": "United Kingdom",
"ParentId": null,
"Subs": []
}
]
I want to remove all "Subs" with empty array.
[
{
"Id": 1,
"Title": "United States",
"ParentId": null,
"Subs": [
{
"Id": 7,
"Title": "Northwest",
"ParentId": 1
},
{
"Id": 8,
"Title": "Northeast",
"ParentId": 1
},
{
"Id": 9,
"Title": "Central",
"ParentId": 1
},
{
"Id": 10,
"Title": "Southwest",
"ParentId": 1
},
{
"Id": 18,
"Title": "Southeast",
"ParentId": 1
}
]
},
{
"Id": 2,
"Title": "Canada",
"ParentId": null
},
{
"Id": 3,
"Title": "France",
"ParentId": null
},
{
"Id": 4,
"Title": "Germany",
"ParentId": null
},
{
"Id": 5,
"Title": "Australia",
"ParentId": null
},
{
"Id": 6,
"Title": "United Kingdom",
"ParentId": null
}
]
What is the best way to deep clean this? I tried different solutions in Stackopverflow but all i got is Object object in place of empty Subs - which i don't want.
[
{
"Id": 1,
"Title": "United States",
"ParentId": null,
"Subs": [
{
"Id": 7,
"Title": "Northwest",
"ParentId": 1,
Object object
},
{
"Id": 8,
"Title": "Northeast",
"ParentId": 1,
Object object
},
{
"Id": 9,
"Title": "Central",
"ParentId": 1,
Object object
},
{
"Id": 10,
"Title": "Southwest",
"ParentId": 1,
Object object
},
{
"Id": 18,
"Title": "Southeast",
"ParentId": 1,
Object object
}
]
},
{
"Id": 2,
"Title": "Canada",
"ParentId": null,
Object object
},
{
"Id": 3,
"Title": "France",
"ParentId": null,
Object object
},
{
"Id": 4,
"Title": "Germany",
"ParentId": null,
Object object
},
{
"Id": 5,
"Title": "Australia",
"ParentId": null,
Object object
},
{
"Id": 6,
"Title": "United Kingdom",
"ParentId": null,
Object object
}
]
which is not i want

You can use _.transform() to recursively check for a specific key (Subs), and remove it if it's value is empty:
const { transform, isObject, isEmpty } = _;
const removeEmpty = (obj, key) =>
transform(obj, (r, v, k) => {
if(k === key && isEmpty(v)) return;
r[k] = isObject(v) ? removeEmpty(v, key) : v;
});
const tree = [{"Id":1,"Title":"United States","ParentId":null,"Subs":[{"Id":7,"Title":"Northwest","ParentId":1,"Subs":[]},{"Id":8,"Title":"Northeast","ParentId":1,"Subs":[]},{"Id":9,"Title":"Central","ParentId":1,"Subs":[]},{"Id":10,"Title":"Southwest","ParentId":1,"Subs":[]},{"Id":18,"Title":"Southeast","ParentId":1,"Subs":[]}]},{"Id":2,"Title":"Canada","ParentId":null,"Subs":[]},{"Id":3,"Title":"France","ParentId":null,"Subs":[]},{"Id":4,"Title":"Germany","ParentId":null,"Subs":[]},{"Id":5,"Title":"Australia","ParentId":null,"Subs":[]},{"Id":6,"Title":"United Kingdom","ParentId":null,"Subs":[]}]
const result = removeEmpty(tree, 'Subs');
console.log(result);
<script src="https://cdnjs.cloudflare.com/ajax/libs/lodash.js/4.17.15/lodash.js"></script>

The correct answer would be this:
let array = [
{
'Id': 1,
'Title': 'United States',
'ParentId': null,
'Subs': [
{
'Id': 7,
'Title': 'Northwest',
'ParentId': 1,
'Subs': []
},
{
'Id': 8,
'Title': 'Northeast',
'ParentId': 1,
'Subs': []
},
{
'Id': 9,
'Title': 'Central',
'ParentId': 1,
'Subs': []
},
{
'Id': 10,
'Title': 'Southwest',
'ParentId': 1,
'Subs': []
},
{
'Id': 18,
'Title': 'Southeast',
'ParentId': 1,
'Subs': []
}
]
},
{
'Id': 2,
'Title': 'Canada',
'ParentId': null,
'Subs': []
},
{
'Id': 3,
'Title': 'France',
'ParentId': null,
'Subs': []
},
{
'Id': 4,
'Title': 'Germany',
'ParentId': null,
'Subs': []
},
{
'Id': 5,
'Title': 'Australia',
'ParentId': null,
'Subs': []
},
{
'Id': 6,
'Title': 'United Kingdom',
'ParentId': null,
'Subs': []
}
]
let newArray = array.map(item=> {
if (item.Subs.length===0){
delete item.Subs
return item
}
item.Subs = item.Subs.map(item=>{
if (item.Subs.length===0){
delete item.Subs
return item
}
})
return item
}
)
console.log(newArray)

let data = [
{
"Id": 1,
"Title": "United States",
"ParentId": null,
"Subs": [
{
"Id": 7,
"Title": "Northwest",
"ParentId": 1,
"Subs": []
},
{
"Id": 8,
"Title": "Northeast",
"ParentId": 1,
"Subs": []
},
{
"Id": 9,
"Title": "Central",
"ParentId": 1,
"Subs": []
},
{
"Id": 10,
"Title": "Southwest",
"ParentId": 1,
"Subs": []
},
{
"Id": 18,
"Title": "Southeast",
"ParentId": 1,
"Subs": []
}
]
},
{
"Id": 2,
"Title": "Canada",
"ParentId": null,
"Subs": []
},
{
"Id": 3,
"Title": "France",
"ParentId": null,
"Subs": []
},
{
"Id": 4,
"Title": "Germany",
"ParentId": null,
"Subs": []
},
{
"Id": 5,
"Title": "Australia",
"ParentId": null,
"Subs": []
},
{
"Id": 6,
"Title": "United Kingdom",
"ParentId": null,
"Subs": []
}
];
data = data.map(row=>{
if (!row.Subs.length) {
let {Subs,...r} = row;
return r;
} return row
})
console.log(data);

write two functions and pass the function that iterates through your array to a map function on data as shown below
function formatData(val) {
if (val.Subs.length > 0) val.Subs.map(a => a.Subs.length > 0 ? formatData(a.Subs) : deleteSubs(a));
else deleteSubs(val);
return val;
}
function deleteSubs(val) {
delete val.Subs;
}
var data = [{
"Id": 1,
"Title": "United States",
"ParentId": null,
"Subs": [{
"Id": 7,
"Title": "Northwest",
"ParentId": 1,
"Subs": []
},
{
"Id": 8,
"Title": "Northeast",
"ParentId": 1,
"Subs": []
},
{
"Id": 9,
"Title": "Central",
"ParentId": 1,
"Subs": []
},
{
"Id": 10,
"Title": "Southwest",
"ParentId": 1,
"Subs": []
},
{
"Id": 18,
"Title": "Southeast",
"ParentId": 1,
"Subs": []
}
]
},
{
"Id": 2,
"Title": "Canada",
"ParentId": null,
"Subs": []
},
{
"Id": 3,
"Title": "France",
"ParentId": null,
"Subs": []
},
{
"Id": 4,
"Title": "Germany",
"ParentId": null,
"Subs": []
},
{
"Id": 5,
"Title": "Australia",
"ParentId": null,
"Subs": []
},
{
"Id": 6,
"Title": "United Kingdom",
"ParentId": null,
"Subs": []
}
]
console.log(data.map(formatData))

Tree massiv get all the links of the elements

I have and object literal that is essentially a tree that does not have a fixed number of levels.
How can I search for a tree for a particular node, and then return this node with connection parameters when it is found in a spectacular javascript manner?
var data = [{
title: 'topNode',
id: 1,
children: [{
title: 'node1',
id: 2,
children: [{
title: 'randomNode_1',
id: 3,
},
{
title: 'node2',
id: 4,
children: [{
title: 'randomNode_2',
id: 5,
children: [{
title: 'node2',
id: 1111,
children: [{
title: 'randomNode_3',
id: 1232,
}]
}]
}]
}
]
}]
}];
tree build   what should be done
tree built from api
serializeGoals: state => type => {
const _goals = JSON.parse(JSON.stringify(state.goals))
return {
title: 'Стратегия',
expand: true,
forst: true,
children: _goals.filter((item) => {
if (item.type !== null && type.some(typeID => typeID === item.type.id)) {
item.shadow = true
} else if (item.type !== null && type.length > 0) {
item.shadow = false
item.type.color = '#ECECEC'
}
item.children = _goals.filter((children) => {
if (children.parent_id === item.id) {
if (children.type !== null && type.some(typeID => typeID === children.type.id)) {
children.shadow = true
} else if (children.type !== null && type.length > 0) {
children.type.color = '#ECECEC'
children.shadow = false
}
return true
}
return false
})
return item.parent_id === null
})
}
}
Get api server JSON array
parent_id - element parent
[{
"id": 5,
"parent_id": null,
"responsible_id": null,
"type_id": 4,
"title": "Тестовая цель - 5",
"description": null,
"period": 2018,
"weight": null,
"responsible": null,
"type": {"id": 4, "title": "Персонал", "color": "#6190e8"}
}, {
"id": 7,
"parent_id": null,
"responsible_id": null,
"type_id": 4,
"title": "Тестовая цель - 7",
"description": null,
"period": 2018,
"weight": null,
"responsible": null,
"type": {"id": 4, "title": "Персонал", "color": "#6190e8"}
}, {
"id": 9,
"parent_id": null,
"responsible_id": null,
"type_id": 4,
"title": "Тестовая цель - 9",
"description": null,
"period": 2018,
"weight": null,
"responsible": null,
"type": {"id": 4, "title": "Персонал", "color": "#6190e8"}
}, {
"id": 11,
"parent_id": null,
"responsible_id": null,
"type_id": 3,
"title": "Тестовая цель - 11",
"description": null,
"period": 2018,
"weight": null,
"responsible": null,
"type": {"id": 3, "title": "Процессы", "color": "#13ce66"}
}, {
"id": 13,
"parent_id": null,
"responsible_id": null,
"type_id": 4,
"title": "Тестовая цель - 13",
"description": null,
"period": 2018,
"weight": null,
"responsible": null,
"type": {"id": 4, "title": "Персонал", "color": "#6190e8"}
}, {
"id": 15,
"parent_id": null,
"responsible_id": null,
"type_id": 2,
"title": "Тестовая цель - 15",
"description": null,
"period": 2018,
"weight": null,
"responsible": null,
"type": {"id": 2, "title": "Клиенты", "color": "#ff4949"}
}, {
"id": 17,
"parent_id": null,
"responsible_id": null,
"type_id": 4,
"title": "Тестовая цель - 17",
"description": null,
"period": 2018,
"weight": null,
"responsible": null,
"type": {"id": 4, "title": "Персонал", "color": "#6190e8"}
}, {
"id": 19,
"parent_id": null,
"responsible_id": null,
"type_id": 4,
"title": "Тестовая цель - 19",
"description": null,
"period": 2018,
"weight": null,
"responsible": null,
"type": {"id": 4, "title": "Персонал", "color": "#6190e8"}
}, {
"id": 20,
"parent_id": 11,
"responsible_id": null,
"type_id": 2,
"title": "Тестовая цель - 20",
"description": null,
"period": 2018,
"weight": null,
"responsible": null,
"type": {"id": 2, "title": "Клиенты", "color": "#ff4949"}
}, {
"id": 21,
"parent_id": null,
"responsible_id": null,
"type_id": 3,
"title": "Тестовая цель - 21",
"description": null,
"period": 2018,
"weight": null,
"responsible": null,
"type": {"id": 3, "title": "Процессы", "color": "#13ce66"}
}, {
"id": 23,
"parent_id": null,
"responsible_id": null,
"type_id": 2,
"title": "Тестовая цель - 23",
"description": null,
"period": 2018,
"weight": null,
"responsible": null,
"type": {"id": 2, "title": "Клиенты", "color": "#ff4949"}
}, {
"id": 25,
"parent_id": null,
"responsible_id": null,
"type_id": 1,
"title": "Тестовая цель - 25",
"description": null,
"period": 2018,
"weight": null,
"responsible": null,
"type": {"id": 1, "title": "Финансы", "color": "#ffc82c"}
}, {
"id": 26,
"parent_id": 15,
"responsible_id": null,
"type_id": 2,
"title": "Тестовая цель - 26",
"description": null,
"period": 2018,
"weight": null,
"responsible": null,
"type": {"id": 2, "title": "Клиенты", "color": "#ff4949"}
}, {
"id": 27,
"parent_id": null,
"responsible_id": null,
"type_id": 1,
"title": "Тестовая цель - 27",
"description": null,
"period": 2018,
"weight": null,
"responsible": null,
"type": {"id": 1, "title": "Финансы", "color": "#ffc82c"}
}, {
"id": 28,
"parent_id": 7,
"responsible_id": null,
"type_id": 2,
"title": "Тестовая цель - 28",
"description": null,
"period": 2018,
"weight": null,
"responsible": null,
"type": {"id": 2, "title": "Клиенты", "color": "#ff4949"}
}, {
"id": 29,
"parent_id": null,
"responsible_id": null,
"type_id": 4,
"title": "Тестовая цель - 29",
"description": null,
"period": 2018,
"weight": null,
"responsible": null,
"type": {"id": 4, "title": "Персонал", "color": "#6190e8"}
}, {
"id": 31,
"parent_id": null,
"responsible_id": null,
"type_id": 2,
"title": "Тестовая цель - 31",
"description": null,
"period": 2018,
"weight": null,
"responsible": null,
"type": {"id": 2, "title": "Клиенты", "color": "#ff4949"}
}, {
"id": 33,
"parent_id": null,
"responsible_id": null,
"type_id": 3,
"title": "Тестовая цель - 33",
"description": null,
"period": 2018,
"weight": null,
"responsible": null,
"type": {"id": 3, "title": "Процессы", "color": "#13ce66"}
}, {
"id": 34,
"parent_id": 31,
"responsible_id": null,
"type_id": 4,
"title": "Тестовая цель - 34",
"description": null,
"period": 2018,
"weight": null,
"responsible": null,
"type": {"id": 4, "title": "Персонал", "color": "#6190e8"}
}, {
"id": 35,
"parent_id": null,
"responsible_id": null,
"type_id": 1,
"title": "Тестовая цель - 35",
"description": null,
"period": 2018,
"weight": null,
"responsible": null,
"type": {"id": 1, "title": "Финансы", "color": "#ffc82c"}
}, {
"id": 36,
"parent_id": 34,
"responsible_id": null,
"type_id": 1,
"title": "Тестовая цель - 36",
"description": null,
"period": 2018,
"weight": null,
"responsible": null,
"type": {"id": 1, "title": "Финансы", "color": "#ffc82c"}
}, {
"id": 37,
"parent_id": null,
"responsible_id": null,
"type_id": 4,
"title": "Тестовая цель - 37",
"description": null,
"period": 2018,
"weight": null,
"responsible": null,
"type": {"id": 4, "title": "Персонал", "color": "#6190e8"}
}, {
"id": 39,
"parent_id": null,
"responsible_id": null,
"type_id": 3,
"title": "Тестовая цель - 39",
"description": null,
"period": 2018,
"weight": null,
"responsible": null,
"type": {"id": 3, "title": "Процессы", "color": "#13ce66"}
}, {
"id": 40,
"parent_id": 34,
"responsible_id": null,
"type_id": 2,
"title": "Тестовая цель - 40",
"description": null,
"period": 2018,
"weight": null,
"responsible": null,
"type": {"id": 2, "title": "Клиенты", "color": "#ff4949"}
}]

I would use a recursive function to iterate through the tree and return the node when the expected one is found (I assumed the title is the search criteria) or return null if none was found.
In example :
var data = [
{
title: 'topNode',
id: 1,
children: [
{
title: 'node1',
id: 2,
children: [
{
title: 'randomNode_1',
id: 3,
},
{
title: 'node2',
id: 4,
children: [
{
title: 'randomNode_2',
id: 5,
children: [
{
title: 'node2',
id: 1111,
children: [
{
title: 'randomNode_3',
id: 1232,
}]
}]
}]
}]
}]
}];
function FindSpecificData(node, titleToFind)
{
let newNode = null;
for (let i = 0; i < node.length; ++i)
{
if (node[i].title == titleToFind)
newNode = node[i];
else if ('children' in node[i])
newNode = FindSpecificData(node[i].children, titleToFind);
if (newNode != null)
return (newNode);
}
return (null);
}
console.log(FindSpecificData(data, 'randomNode_2'));
console.log(FindSpecificData(data, 'randomNode_1'));
console.log(FindSpecificData(data, 'missing node'));

Try this simple method to find out your node
function getNode(node) {
if (node.title === 'randomNode_3') {
return true;
} else if (!node.children && !node.id) {
return false;
} else {
if (node.children) {
for (var i = 0; i < node.children.length; i++) {
getNode(node.children[i])
}
}
}
}
getNode(data[0])