Find object in array with subarray checking an property

Question

I have the array below and each element has another array called FunctionalityChildren, I need find the unique object that contains the property ActionFull equal a variable, for example '/budget/allocation' or '/budget'

let bigArray = [
      {
        "FunctionalityID": 114,
        "Name": "General Register",
        "Action": "/general-register",
        "Icon": "settings_input_composite",
        "System_ID": 21,
        "FunctionalityFather_ID": null,
        "Active": 1,
        "Priority": 1,
        "FunctionalityChildren": [
          {
            "FunctionalityID": 115,
            "Name": "Supplier",
            "Action": "/supplier",
            "Icon": "perm_contact_calendar",
            "System_ID": 21,
            "FunctionalityFather_ID": 114,
            "Active": 1,
            "Priority": 1,
            "ProfileFunctionalities": [
              {
                "ProfileFunctionalityID": 1251,
                "Profile_ID": 68,
                "Functionality_ID": 115,
                "CanInsert": true,
                "CanUpdate": true,
                "CanDelete": true
              }
            ],
            "ActionFull": "/general-register/supplier"
          },
          {
            "FunctionalityID": 116,
            "Name": "RPA",
            "Action": "/rpa",
            "Icon": "view_day",
            "System_ID": 21,
            "FunctionalityFather_ID": 114,
            "Active": 1,
            "Priority": 2,
            "ProfileFunctionalities": [
              {
                "ProfileFunctionalityID": 1252,
                "Profile_ID": 68,
                "Functionality_ID": 116,
                "CanInsert": true,
                "CanUpdate": true,
                "CanDelete": true
              }
            ],
            "ActionFull": "/general-register/rpa"
          },
          {
            "FunctionalityID": 117,
            "Name": "Cost Center",
            "Action": "/cost-center",
            "Icon": "home",
            "System_ID": 21,
            "FunctionalityFather_ID": 114,
            "Active": 1,
            "Priority": 3,
            "ProfileFunctionalities": [
              {
                "ProfileFunctionalityID": 1253,
                "Profile_ID": 68,
                "Functionality_ID": 117,
                "CanInsert": true,
                "CanUpdate": true,
                "CanDelete": true
              }
            ],
            "ActionFull": "/general-register/cost-center"
          },
          {
            "FunctionalityID": 118,
            "Name": "Departament",
            "Action": "/departament",
            "Icon": "donut_small",
            "System_ID": 21,
            "FunctionalityFather_ID": 114,
            "Active": 1,
            "Priority": 4,
            "ProfileFunctionalities": [
              {
                "ProfileFunctionalityID": 1254,
                "Profile_ID": 68,
                "Functionality_ID": 118,
                "CanInsert": true,
                "CanUpdate": true,
                "CanDelete": true
              }
            ],
            "ActionFull": "/general-register/departament"
          },
          {
            "FunctionalityID": 119,
            "Name": "Product Line",
            "Action": "/product-line",
            "Icon": "view_headline",
            "System_ID": 21,
            "FunctionalityFather_ID": 114,
            "Active": 1,
            "Priority": 5,
            "ProfileFunctionalities": [
              {
                "ProfileFunctionalityID": 1255,
                "Profile_ID": 68,
                "Functionality_ID": 119,
                "CanInsert": true,
                "CanUpdate": true,
                "CanDelete": true
              }
            ],
            "ActionFull": "/general-register/product-line"
          },
          {
            "FunctionalityID": 120,
            "Name": "Product",
            "Action": "/product",
            "Icon": "shopping_cart",
            "System_ID": 21,
            "FunctionalityFather_ID": 114,
            "Active": 1,
            "Priority": 6,
            "ProfileFunctionalities": [
              {
                "ProfileFunctionalityID": 1256,
                "Profile_ID": 68,
                "Functionality_ID": 120,
                "CanInsert": true,
                "CanUpdate": true,
                "CanDelete": true
              }
            ],
            "ActionFull": "/general-register/product"
          }
        ],
        "ProfileFunctionalities": [
          {
            "ProfileFunctionalityID": 1250,
            "Profile_ID": 68,
            "Functionality_ID": 114,
            "CanInsert": false,
            "CanUpdate": false,
            "CanDelete": false
          }
        ],
        "ActionFull": "/general-register",
        "HasFunctionalities": true,
        "model": false
      },
      {
        "FunctionalityID": 99,
        "Name": "Budget Account",
        "Action": "/budget-account",
        "Icon": "monetization_on",
        "System_ID": 21,
        "FunctionalityFather_ID": null,
        "Active": 1,
        "Priority": 2,
        "FunctionalityChildren": [
          {
            "FunctionalityID": 100,
            "Name": "Sector",
            "Action": "/sector",
            "Icon": "account_balance",
            "System_ID": 21,
            "FunctionalityFather_ID": 99,
            "Active": 1,
            "Priority": 1,
            "ProfileFunctionalities": [
              {
                "ProfileFunctionalityID": 1258,
                "Profile_ID": 68,
                "Functionality_ID": 100,
                "CanInsert": true,
                "CanUpdate": true,
                "CanDelete": true
              }
            ],
            "ActionFull": "/budget-account/sector"
          },
          {
            "FunctionalityID": 101,
            "Name": "Group",
            "Action": "/group",
            "Icon": "group_work",
            "System_ID": 21,
            "FunctionalityFather_ID": 99,
            "Active": 1,
            "Priority": 2,
            "ProfileFunctionalities": [
              {
                "ProfileFunctionalityID": 1259,
                "Profile_ID": 68,
                "Functionality_ID": 101,
                "CanInsert": true,
                "CanUpdate": true,
                "CanDelete": true
              }
            ],
            "ActionFull": "/budget-account/group"
          },
          {
            "FunctionalityID": 102,
            "Name": "Account",
            "Action": "/account",
            "Icon": "attach_money",
            "System_ID": 21,
            "FunctionalityFather_ID": 99,
            "Active": 1,
            "Priority": 3,
            "ProfileFunctionalities": [
              {
                "ProfileFunctionalityID": 1260,
                "Profile_ID": 68,
                "Functionality_ID": 102,
                "CanInsert": true,
                "CanUpdate": true,
                "CanDelete": true
              }
            ],
            "ActionFull": "/budget-account/account"
          },
          {
            "FunctionalityID": 103,
            "Name": "Budget",
            "Action": "/budget",
            "Icon": "credit_card",
            "System_ID": 21,
            "FunctionalityFather_ID": 99,
            "Active": 1,
            "Priority": 4,
            "ProfileFunctionalities": [
              {
                "ProfileFunctionalityID": 1261,
                "Profile_ID": 68,
                "Functionality_ID": 103,
                "CanInsert": true,
                "CanUpdate": true,
                "CanDelete": true
              }
            ],
            "ActionFull": "/budget-account/budget"
          }
        ],
        "ProfileFunctionalities": [
          {
            "ProfileFunctionalityID": 1257,
            "Profile_ID": 68,
            "Functionality_ID": 99,
            "CanInsert": false,
            "CanUpdate": false,
            "CanDelete": false
          }
        ],
        "ActionFull": "/budget-account",
        "HasFunctionalities": true,
        "model": false
      },
      {
        "FunctionalityID": 105,
        "Name": "Budget",
        "Action": "/budget",
        "Icon": "credit_card",
        "System_ID": 21,
        "FunctionalityFather_ID": null,
        "Active": 1,
        "Priority": 3,
        "FunctionalityChildren": [
          {
            "FunctionalityID": 106,
            "Name": "Allocation",
            "Action": "/allocation",
            "Icon": "note_add",
            "System_ID": 21,
            "FunctionalityFather_ID": 105,
            "Active": 1,
            "Priority": 1,
            "ProfileFunctionalities": [
              {
                "ProfileFunctionalityID": 1272,
                "Profile_ID": 68,
                "Functionality_ID": 106,
                "CanInsert": true,
                "CanUpdate": true,
                "CanDelete": true
              }
            ],
            "ActionFull": "/budget/allocation"
          },
          {
            "FunctionalityID": 107,
            "Name": "Copy",
            "Action": "/copy",
            "Icon": "content_copy",
            "System_ID": 21,
            "FunctionalityFather_ID": 105,
            "Active": 1,
            "Priority": 2,
            "ProfileFunctionalities": [
              {
                "ProfileFunctionalityID": 1273,
                "Profile_ID": 68,
                "Functionality_ID": 107,
                "CanInsert": true,
                "CanUpdate": true,
                "CanDelete": true
              }
            ],
            "ActionFull": "/budget/copy"
          },
          {
            "FunctionalityID": 108,
            "Name": "In And Out",
            "Action": "/in-and-out",
            "Icon": "swap_vertical_circle",
            "System_ID": 21,
            "FunctionalityFather_ID": 105,
            "Active": 1,
            "Priority": 3,
            "ProfileFunctionalities": [
              {
                "ProfileFunctionalityID": 1274,
                "Profile_ID": 68,
                "Functionality_ID": 108,
                "CanInsert": true,
                "CanUpdate": true,
                "CanDelete": true
              }
            ],
            "ActionFull": "/budget/in-and-out"
          },
          {
            "FunctionalityID": 109,
            "Name": "Account Accounting",
            "Action": "/account-accounting",
            "Icon": "assignment",
            "System_ID": 21,
            "FunctionalityFather_ID": 105,
            "Active": 1,
            "Priority": 4,
            "ProfileFunctionalities": [
              {
                "ProfileFunctionalityID": 1275,
                "Profile_ID": 68,
                "Functionality_ID": 109,
                "CanInsert": true,
                "CanUpdate": true,
                "CanDelete": true
              }
            ],
            "ActionFull": "/budget/account-accounting"
          },
          {
            "FunctionalityID": 110,
            "Name": "Event",
            "Action": "/eventos",
            "Icon": "shopping_cart",
            "System_ID": 21,
            "FunctionalityFather_ID": 105,
            "Active": 1,
            "Priority": 5,
            "ProfileFunctionalities": [
              {
                "ProfileFunctionalityID": 1276,
                "Profile_ID": 68,
                "Functionality_ID": 110,
                "CanInsert": true,
                "CanUpdate": true,
                "CanDelete": true
              }
            ],
            "ActionFull": "/budget/eventos"
          },
          {
            "FunctionalityID": 111,
            "Name": "Copy Counter",
            "Action": "/copy-counter",
            "Icon": "swap_vertical_circle",
            "System_ID": 21,
            "FunctionalityFather_ID": 105,
            "Active": 1,
            "Priority": 6,
            "ProfileFunctionalities": [
              {
                "ProfileFunctionalityID": 1277,
                "Profile_ID": 68,
                "Functionality_ID": 111,
                "CanInsert": true,
                "CanUpdate": true,
                "CanDelete": true
              }
            ],
            "ActionFull": "/budget/copy-counter"
          }
        ],
        "ProfileFunctionalities": [
          {
            "ProfileFunctionalityID": 1271,
            "Profile_ID": 68,
            "Functionality_ID": 105,
            "CanInsert": false,
            "CanUpdate": false,
            "CanDelete": false
          }
        ],
        "ActionFull": "/budget",
        "HasFunctionalities": false,
        "model": false
      },
      {
        "FunctionalityID": 112,
        "Name": "Config",
        "Action": "/config",
        "Icon": "build",
        "System_ID": 21,
        "FunctionalityFather_ID": null,
        "Active": 1,
        "Priority": 4,
        "FunctionalityChildren": [
          {
            "FunctionalityID": 113,
            "Name": "Control Year Month",
            "Action": "/control-year-month",
            "Icon": "date_range",
            "System_ID": 21,
            "FunctionalityFather_ID": 112,
            "Active": 1,
            "Priority": 1,
            "ProfileFunctionalities": [
              {
                "ProfileFunctionalityID": 1263,
                "Profile_ID": 68,
                "Functionality_ID": 113,
                "CanInsert": true,
                "CanUpdate": true,
                "CanDelete": true
              }
            ],
            "ActionFull": "/config/control-year-month"
          }
        ],
        "ProfileFunctionalities": [
          {
            "ProfileFunctionalityID": 1262,
            "Profile_ID": 68,
            "Functionality_ID": 112,
            "CanInsert": false,
            "CanUpdate": false,
            "CanDelete": false
          }
        ],
        "ActionFull": "/config",
        "HasFunctionalities": true,
        "model": false
      },
      {
        "FunctionalityID": 121,
        "Name": "Report",
        "Action": "/report",
        "Icon": "picture_as_pdf",
        "System_ID": 21,
        "FunctionalityFather_ID": null,
        "Active": 1,
        "Priority": 5,
        "FunctionalityChildren": [
          {
            "FunctionalityID": 122,
            "Name": "Report 1",
            "Action": "/report-um",
            "Icon": "picture_as_pdf",
            "System_ID": 21,
            "FunctionalityFather_ID": 121,
            "Active": 1,
            "Priority": 1,
            "ProfileFunctionalities": [
              {
                "ProfileFunctionalityID": 1265,
                "Profile_ID": 68,
                "Functionality_ID": 122,
                "CanInsert": true,
                "CanUpdate": true,
                "CanDelete": true
              }
            ],
            "ActionFull": "/report/report-um"
          },
          {
            "FunctionalityID": 123,
            "Name": "Report 2",
            "Action": "/report-dois",
            "Icon": "picture_as_pdf",
            "System_ID": 21,
            "FunctionalityFather_ID": 121,
            "Active": 1,
            "Priority": 2,
            "ProfileFunctionalities": [
              {
                "ProfileFunctionalityID": 1266,
                "Profile_ID": 68,
                "Functionality_ID": 123,
                "CanInsert": true,
                "CanUpdate": true,
                "CanDelete": true
              }
            ],
            "ActionFull": "/report/report-dois"
          },
          {
            "FunctionalityID": 124,
            "Name": "Report 3",
            "Action": "/report-tres",
            "Icon": "picture_as_pdf",
            "System_ID": 21,
            "FunctionalityFather_ID": 121,
            "Active": 1,
            "Priority": 3,
            "ProfileFunctionalities": [
              {
                "ProfileFunctionalityID": 1267,
                "Profile_ID": 68,
                "Functionality_ID": 124,
                "CanInsert": true,
                "CanUpdate": true,
                "CanDelete": true
              }
            ],
            "ActionFull": "/report/report-tres"
          }
        ],
        "ProfileFunctionalities": [
          {
            "ProfileFunctionalityID": 1264,
            "Profile_ID": 68,
            "Functionality_ID": 121,
            "CanInsert": false,
            "CanUpdate": false,
            "CanDelete": false
          }
        ],
        "ActionFull": "/report",
        "HasFunctionalities": true,
        "model": false
      },
      {
        "FunctionalityID": 125,
        "Name": "Profile",
        "Action": "/profile",
        "Icon": "person",
        "System_ID": 21,
        "FunctionalityFather_ID": null,
        "Active": 1,
        "Priority": 6,
        "FunctionalityChildren": [
          {
            "FunctionalityID": 126,
            "Name": "New",
            "Action": "/new",
            "Icon": "plus_one",
            "System_ID": 21,
            "FunctionalityFather_ID": 125,
            "Active": 1,
            "Priority": 1,
            "ProfileFunctionalities": [
              {
                "ProfileFunctionalityID": 1269,
                "Profile_ID": 68,
                "Functionality_ID": 126,
                "CanInsert": true,
                "CanUpdate": true,
                "CanDelete": true
              }
            ],
            "ActionFull": "/profile/new"
          },
          {
            "FunctionalityID": 127,
            "Name": "List",
            "Action": "/list",
            "Icon": "view_list",
            "System_ID": 21,
            "FunctionalityFather_ID": 125,
            "Active": 1,
            "Priority": 2,
            "ProfileFunctionalities": [
              {
                "ProfileFunctionalityID": 1270,
                "Profile_ID": 68,
                "Functionality_ID": 127,
                "CanInsert": true,
                "CanUpdate": true,
                "CanDelete": true
              }
            ],
            "ActionFull": "/profile/list"
          }
        ],
        "ProfileFunctionalities": [
          {
            "ProfileFunctionalityID": 1268,
            "Profile_ID": 68,
            "Functionality_ID": 125,
            "CanInsert": false,
            "CanUpdate": false,
            "CanDelete": false
          }
        ],
        "ActionFull": "/profile",
        "HasFunctionalities": true,
        "model": false
      }
    ]

The code above works for me but I think exist another code more sugar and I want learn it:

let all = bigArray.reduce((prev, next) => {
   return prev.concat(next.FunctionalityChildren)
}, [])

bigArray.reduce((prev, next) => all.push(next), [])

let desired1 = '/budget'
let desired2 = '/budget/allocation'

let element1 = all.find(e=>e.ActionFull === desired1) // return the object that contains ActionFull = '/budget' (can be father)
let element2 = all.find(e=>e.ActionFull === desired2) // return the object that contains ActionFull = '/budget/allocation' (can be child)

console.log(element1)
console.log(element2)

Pay attention, as I showed above, It can be a father or a child.

Answer 1

Here's how we expect our generic deepFind function to work

deepFind (x => x.ActionFull === '/budget', bigArray)
// { FunctionalityID: 105, Name: 'Budget', ActionFull: '/budget' ... }

deepFind (x => x.ActionFull === '/budget/allocation', bigArray)
// { FunctionalityID: 106, Name: 'Allocation', ActionFull: '/budget/allocation' }

I'm going to give you the imperative style solution in hopes that this gets you thinking about how you will need to structure your function calls. Notice that this program will begin iterating thru a possible set of solutions but it stops iterating and returns a result as soon as a match is found. Using Array#reduce or Array#map or Array#filter is inadequate for this task as they do not have the short-circuiting behavior we're looking for

Run the program below in your browser, this time with a simplified data set. It's should be easy to follow how we arrive at the result

const data =
  [ { a: 1, b: 1 }
  , { a: 2, b: 2, c: { d: [ { e: 2 } ] } }
  , { a: 3, b: { c: { d: { e: { f: 3 } } } } }
  ]

const deepFind = (f, obj = {}) =>
{ if (Object (obj) === obj)
  { if (f (obj) === true)
      return obj

    for (const [ k, v ] of Object.entries (obj))
    { const res =
        deepFind (f, v)
      
      if (res !== undefined)
        return res
    }
  }

  return undefined
}

console.log
  ( deepFind (x => x.a === 1, data)             // { a: 1, b: 1 }
  , deepFind (x => x.e === 2, data)             // { e: 2 }
  , deepFind (x => Array.isArray(x.d), data)    // { d: [ { e: 2 } ] }
  , deepFind (x => x.f === 3, data)             // { f: 3 }
  , deepFind (x => x.e && x.e.f === 3, data)    // { e: { f: 3 } }
  , deepFind (x => x.z === 9, data)             // undefined
  )

deepFind works for all objects, arrays included

const alpha =
  [ [ 'a', 'b', 'c' ], [ 'd', 'e', 'f' ], [ 'g', 'h', 'i' ] ]

deepFind (x => x [1] === 'h', alpha)
// [ 'g', 'h', 'i', ]

deepFind (([ _0, _1, _2 ]) => _2 === 'f', alpha)
// [ 'd', 'e', 'f' ]

Expressing deepFind as a functional program requires only the translation of an iterative loop to a recursive function with state parameters. Because you design the recursive function yourself, you can encode the short-circuit behavior this program requires.

Below, deepFind is written using a pure functional expression. State parameters v and rest are added but only f and o are meant to be specified by the user, like we did above. If you didn't want these as part your function's public interface, an internal auxiliary function could be used instead.

const identity = x =>
  x

const None =
  Symbol ()

const deepFind = (f = identity, o = {}, [ _, v ] = [ None, None ], ...rest) =>
  Object (o) === o
    ? f (o) === true
      ? o
      : v === None
        ? deepFind (f, null, ...Object.entries (o))
        : deepFind (f, v, ...rest, ...Object.entries (o)) 
    : v === None
      ? undefined
      : deepFind (f, v, ...rest )

Re-run the program to verify that the output is indeed the same

const identity = x =>
  x

const None =
  Symbol ()

const deepFind = (f = identity, o = {}, [ _, v ] = [ None, None ], ...rest) =>
  Object (o) === o
    ? f (o) === true
      ? o
      : v === None
        ? deepFind (f, null, ...Object.entries (o))
        : deepFind (f, v, ...rest, ...Object.entries (o)) 
    : v === None
      ? undefined
      : deepFind (f, v, ...rest )

const data =
  [ { a: 1, b: 1 }
  , { a: 2, b: 2, c: { d: [ { e: 2 } ] } }
  , { a: 3, b: { c: { d: { e: { f: 3 } } } } }
  ]

console.log
  ( deepFind (x => x.a === 1, data)             // { a: 1, b: 1 }
  , deepFind (x => x.e === 2, data)             // { e: 2 }
  , deepFind (x => Array.isArray(x.d), data)    // { d: [ { e: 2 } ] }
  , deepFind (x => x.f === 3, data)             // { f: 3 }
  , deepFind (x => x.e && x.e.f === 3, data)    // { e: { f: 3 } }
  , deepFind (x => x.z === 9, data)             // undefined
  )

const alpha =
  [ [ 'a', 'b', 'c' ], [ 'd', 'e', 'f' ], [ 'g', 'h', 'i' ] ]

console.log
  ( deepFind (x => x [1] === 'h', alpha)              // [ 'g', 'h', 'i', ]
  , deepFind (([ _0, _1, _2 ]) => _2 === 'f', alpha)  // [ 'd', 'e', 'f' ]
  )

Lastly, here's a deepFindAll. In this variation of the program, instead of getting a single answer or undefined, we get an array of zero or more results. This demonstrates the auxiliary loop I mentioned in the previous example and also a beautiful use case for generators.

As an exercise, I encourage you to rewrite deepFindAll below using a functional expression in place of the auxiliary generator

const deepFindAll = (f, o = {}) =>
{ const aux =
    function* (f, o)
    { if (Object (o) === o)
      { if (f (o) === true)
          yield o
        for (const [ _, v ] of Object.entries (o))
          yield* aux (f, v)
      }
    }
  return Array.from (aux (f, o))
}

const data =
  [ { a: 1, b: 1 }
  , { a: 2, b: 2, c: { d: [ { e: 2 } ] } }
  , { a: 3, b: { c: { d: { e: { f: 3 } } } } }
  ]

console.log
  ( deepFindAll (x => x.a === 1 || x.e === 2, data)  // [ { a: 1, b: 1 }, { e: 2 } ]
  , deepFindAll (x => x.e !== undefined, data)       //[ { e: 2 }, { e: { f: 3 } } ]
  , deepFindAll (x => x.z === 9, data)               // []
  )

Answer 2

Since you have to find the unique item, you can use find method. The find() method returns the value of the first element in the array that satisfies the provided testing function. Otherwise undefined is returned.

Also, you can use map method and spread syntax in order to find out all the children elements from the bigArray elements.

The map() method creates a new array with the results of calling a provided callback function on every element in the calling array.

let bigArray = [ { "FunctionalityID": 114, "Name": "General Register", "Action": "/general-register", "Icon": "settings_input_composite", "System_ID": 21, "FunctionalityFather_ID": null, "Active": 1, "Priority": 1, "FunctionalityChildren": [ { "FunctionalityID": 115, "Name": "Supplier", "Action": "/supplier", "Icon": "perm_contact_calendar", "System_ID": 21, "FunctionalityFather_ID": 114, "Active": 1, "Priority": 1, "ProfileFunctionalities": [ { "ProfileFunctionalityID": 1251, "Profile_ID": 68, "Functionality_ID": 115, "CanInsert": true, "CanUpdate": true, "CanDelete": true } ], "ActionFull": "/general-register/supplier" }, { "FunctionalityID": 116, "Name": "RPA", "Action": "/rpa", "Icon": "view_day", "System_ID": 21, "FunctionalityFather_ID": 114, "Active": 1, "Priority": 2, "ProfileFunctionalities": [ { "ProfileFunctionalityID": 1252, "Profile_ID": 68, "Functionality_ID": 116, "CanInsert": true, "CanUpdate": true, "CanDelete": true } ], "ActionFull": "/general-register/rpa" }, { "FunctionalityID": 117, "Name": "Cost Center", "Action": "/cost-center", "Icon": "home", "System_ID": 21, "FunctionalityFather_ID": 114, "Active": 1, "Priority": 3, "ProfileFunctionalities": [ { "ProfileFunctionalityID": 1253, "Profile_ID": 68, "Functionality_ID": 117, "CanInsert": true, "CanUpdate": true, "CanDelete": true } ], "ActionFull": "/general-register/cost-center" }, { "FunctionalityID": 118, "Name": "Departament", "Action": "/departament", "Icon": "donut_small", "System_ID": 21, "FunctionalityFather_ID": 114, "Active": 1, "Priority": 4, "ProfileFunctionalities": [ { "ProfileFunctionalityID": 1254, "Profile_ID": 68, "Functionality_ID": 118, "CanInsert": true, "CanUpdate": true, "CanDelete": true } ], "ActionFull": "/general-register/departament" }, { "FunctionalityID": 119, "Name": "Product Line", "Action": "/product-line", "Icon": "view_headline", "System_ID": 21, "FunctionalityFather_ID": 114, "Active": 1, "Priority": 5, "ProfileFunctionalities": [ { "ProfileFunctionalityID": 1255, "Profile_ID": 68, "Functionality_ID": 119, "CanInsert": true, "CanUpdate": true, "CanDelete": true } ], "ActionFull": "/general-register/product-line" }, { "FunctionalityID": 120, "Name": "Product", "Action": "/product", "Icon": "shopping_cart", "System_ID": 21, "FunctionalityFather_ID": 114, "Active": 1, "Priority": 6, "ProfileFunctionalities": [ { "ProfileFunctionalityID": 1256, "Profile_ID": 68, "Functionality_ID": 120, "CanInsert": true, "CanUpdate": true, "CanDelete": true } ], "ActionFull": "/general-register/product" } ], "ProfileFunctionalities": [ { "ProfileFunctionalityID": 1250, "Profile_ID": 68, "Functionality_ID": 114, "CanInsert": false, "CanUpdate": false, "CanDelete": false } ], "ActionFull": "/general-register", "HasFunctionalities": true, "model": false }, { "FunctionalityID": 99, "Name": "Budget Account", "Action": "/budget-account", "Icon": "monetization_on", "System_ID": 21, "FunctionalityFather_ID": null, "Active": 1, "Priority": 2, "FunctionalityChildren": [ { "FunctionalityID": 100, "Name": "Sector", "Action": "/sector", "Icon": "account_balance", "System_ID": 21, "FunctionalityFather_ID": 99, "Active": 1, "Priority": 1, "ProfileFunctionalities": [ { "ProfileFunctionalityID": 1258, "Profile_ID": 68, "Functionality_ID": 100, "CanInsert": true, "CanUpdate": true, "CanDelete": true } ], "ActionFull": "/budget-account/sector" }, { "FunctionalityID": 101, "Name": "Group", "Action": "/group", "Icon": "group_work", "System_ID": 21, "FunctionalityFather_ID": 99, "Active": 1, "Priority": 2, "ProfileFunctionalities": [ { "ProfileFunctionalityID": 1259, "Profile_ID": 68, "Functionality_ID": 101, "CanInsert": true, "CanUpdate": true, "CanDelete": true } ], "ActionFull": "/budget-account/group" }, { "FunctionalityID": 102, "Name": "Account", "Action": "/account", "Icon": "attach_money", "System_ID": 21, "FunctionalityFather_ID": 99, "Active": 1, "Priority": 3, "ProfileFunctionalities": [ { "ProfileFunctionalityID": 1260, "Profile_ID": 68, "Functionality_ID": 102, "CanInsert": true, "CanUpdate": true, "CanDelete": true } ], "ActionFull": "/budget-account/account" }, { "FunctionalityID": 103, "Name": "Budget", "Action": "/budget", "Icon": "credit_card", "System_ID": 21, "FunctionalityFather_ID": 99, "Active": 1, "Priority": 4, "ProfileFunctionalities": [ { "ProfileFunctionalityID": 1261, "Profile_ID": 68, "Functionality_ID": 103, "CanInsert": true, "CanUpdate": true, "CanDelete": true } ], "ActionFull": "/budget-account/budget" } ], "ProfileFunctionalities": [ { "ProfileFunctionalityID": 1257, "Profile_ID": 68, "Functionality_ID": 99, "CanInsert": false, "CanUpdate": false, "CanDelete": false } ], "ActionFull": "/budget-account", "HasFunctionalities": true, "model": false }, { "FunctionalityID": 105, "Name": "Budget", "Action": "/budget", "Icon": "credit_card", "System_ID": 21, "FunctionalityFather_ID": null, "Active": 1, "Priority": 3, "FunctionalityChildren": [ { "FunctionalityID": 106, "Name": "Allocation", "Action": "/allocation", "Icon": "note_add", "System_ID": 21, "FunctionalityFather_ID": 105, "Active": 1, "Priority": 1, "ProfileFunctionalities": [ { "ProfileFunctionalityID": 1272, "Profile_ID": 68, "Functionality_ID": 106, "CanInsert": true, "CanUpdate": true, "CanDelete": true } ], "ActionFull": "/budget/allocation" }, { "FunctionalityID": 107, "Name": "Copy", "Action": "/copy", "Icon": "content_copy", "System_ID": 21, "FunctionalityFather_ID": 105, "Active": 1, "Priority": 2, "ProfileFunctionalities": [ { "ProfileFunctionalityID": 1273, "Profile_ID": 68, "Functionality_ID": 107, "CanInsert": true, "CanUpdate": true, "CanDelete": true } ], "ActionFull": "/budget/copy" }, { "FunctionalityID": 108, "Name": "In And Out", "Action": "/in-and-out", "Icon": "swap_vertical_circle", "System_ID": 21, "FunctionalityFather_ID": 105, "Active": 1, "Priority": 3, "ProfileFunctionalities": [ { "ProfileFunctionalityID": 1274, "Profile_ID": 68, "Functionality_ID": 108, "CanInsert": true, "CanUpdate": true, "CanDelete": true } ], "ActionFull": "/budget/in-and-out" }, { "FunctionalityID": 109, "Name": "Account Accounting", "Action": "/account-accounting", "Icon": "assignment", "System_ID": 21, "FunctionalityFather_ID": 105, "Active": 1, "Priority": 4, "ProfileFunctionalities": [ { "ProfileFunctionalityID": 1275, "Profile_ID": 68, "Functionality_ID": 109, "CanInsert": true, "CanUpdate": true, "CanDelete": true } ], "ActionFull": "/budget/account-accounting" }, { "FunctionalityID": 110, "Name": "Event", "Action": "/eventos", "Icon": "shopping_cart", "System_ID": 21, "FunctionalityFather_ID": 105, "Active": 1, "Priority": 5, "ProfileFunctionalities": [ { "ProfileFunctionalityID": 1276, "Profile_ID": 68, "Functionality_ID": 110, "CanInsert": true, "CanUpdate": true, "CanDelete": true } ], "ActionFull": "/budget/eventos" }, { "FunctionalityID": 111, "Name": "Copy Counter", "Action": "/copy-counter", "Icon": "swap_vertical_circle", "System_ID": 21, "FunctionalityFather_ID": 105, "Active": 1, "Priority": 6, "ProfileFunctionalities": [ { "ProfileFunctionalityID": 1277, "Profile_ID": 68, "Functionality_ID": 111, "CanInsert": true, "CanUpdate": true, "CanDelete": true } ], "ActionFull": "/budget/copy-counter" } ], "ProfileFunctionalities": [ { "ProfileFunctionalityID": 1271, "Profile_ID": 68, "Functionality_ID": 105, "CanInsert": false, "CanUpdate": false, "CanDelete": false } ], "ActionFull": "/budget", "HasFunctionalities": false, "model": false }, { "FunctionalityID": 112, "Name": "Config", "Action": "/config", "Icon": "build", "System_ID": 21, "FunctionalityFather_ID": null, "Active": 1, "Priority": 4, "FunctionalityChildren": [ { "FunctionalityID": 113, "Name": "Control Year Month", "Action": "/control-year-month", "Icon": "date_range", "System_ID": 21, "FunctionalityFather_ID": 112, "Active": 1, "Priority": 1, "ProfileFunctionalities": [ { "ProfileFunctionalityID": 1263, "Profile_ID": 68, "Functionality_ID": 113, "CanInsert": true, "CanUpdate": true, "CanDelete": true } ], "ActionFull": "/config/control-year-month" } ], "ProfileFunctionalities": [ { "ProfileFunctionalityID": 1262, "Profile_ID": 68, "Functionality_ID": 112, "CanInsert": false, "CanUpdate": false, "CanDelete": false } ], "ActionFull": "/config", "HasFunctionalities": true, "model": false }, { "FunctionalityID": 121, "Name": "Report", "Action": "/report", "Icon": "picture_as_pdf", "System_ID": 21, "FunctionalityFather_ID": null, "Active": 1, "Priority": 5, "FunctionalityChildren": [ { "FunctionalityID": 122, "Name": "Report 1", "Action": "/report-um", "Icon": "picture_as_pdf", "System_ID": 21, "FunctionalityFather_ID": 121, "Active": 1, "Priority": 1, "ProfileFunctionalities": [ { "ProfileFunctionalityID": 1265, "Profile_ID": 68, "Functionality_ID": 122, "CanInsert": true, "CanUpdate": true, "CanDelete": true } ], "ActionFull": "/report/report-um" }, { "FunctionalityID": 123, "Name": "Report 2", "Action": "/report-dois", "Icon": "picture_as_pdf", "System_ID": 21, "FunctionalityFather_ID": 121, "Active": 1, "Priority": 2, "ProfileFunctionalities": [ { "ProfileFunctionalityID": 1266, "Profile_ID": 68, "Functionality_ID": 123, "CanInsert": true, "CanUpdate": true, "CanDelete": true } ], "ActionFull": "/report/report-dois" }, { "FunctionalityID": 124, "Name": "Report 3", "Action": "/report-tres", "Icon": "picture_as_pdf", "System_ID": 21, "FunctionalityFather_ID": 121, "Active": 1, "Priority": 3, "ProfileFunctionalities": [ { "ProfileFunctionalityID": 1267, "Profile_ID": 68, "Functionality_ID": 124, "CanInsert": true, "CanUpdate": true, "CanDelete": true } ], "ActionFull": "/report/report-tres" } ], "ProfileFunctionalities": [ { "ProfileFunctionalityID": 1264, "Profile_ID": 68, "Functionality_ID": 121, "CanInsert": false, "CanUpdate": false, "CanDelete": false } ], "ActionFull": "/report", "HasFunctionalities": true, "model": false }, { "FunctionalityID": 125, "Name": "Profile", "Action": "/profile", "Icon": "person", "System_ID": 21, "FunctionalityFather_ID": null, "Active": 1, "Priority": 6, "FunctionalityChildren": [ { "FunctionalityID": 126, "Name": "New", "Action": "/new", "Icon": "plus_one", "System_ID": 21, "FunctionalityFather_ID": 125, "Active": 1, "Priority": 1, "ProfileFunctionalities": [ { "ProfileFunctionalityID": 1269, "Profile_ID": 68, "Functionality_ID": 126, "CanInsert": true, "CanUpdate": true, "CanDelete": true } ], "ActionFull": "/profile/new" }, { "FunctionalityID": 127, "Name": "List", "Action": "/list", "Icon": "view_list", "System_ID": 21, "FunctionalityFather_ID": 125, "Active": 1, "Priority": 2, "ProfileFunctionalities": [ { "ProfileFunctionalityID": 1270, "Profile_ID": 68, "Functionality_ID": 127, "CanInsert": true, "CanUpdate": true, "CanDelete": true } ], "ActionFull": "/profile/list" } ], "ProfileFunctionalities": [ { "ProfileFunctionalityID": 1268, "Profile_ID": 68, "Functionality_ID": 125, "CanInsert": false, "CanUpdate": false, "CanDelete": false } ], "ActionFull": "/profile", "HasFunctionalities": true, "model": false } ]

let action_full = '/budget/allocation';
   
let result = [].concat(...bigArray.map(elem => elem.FunctionalityChildren))
               .find(a => a.ActionFull == action_full); // It work only to children objects.

console.log(result);

let findedInFatherAndChild = bigArray.concat(...bigArray.map(elem => elem.FunctionalityChildren)).find(a => a.ActionFull === '/budget') // This work for me, both for father and children. Thanks Mihai