Find Object inside an Array of nested Objects (Lodash / Javascript / Typescript) [duplicate]

Question

Lets say have an Array of Objects that looks like this:

    let example = [
      {
        children: [{
          data: { id: 2, group: 1001, name: "Audi" },
        }],
        data: { id: 1, group: 1000, name: "Cars" }
      },
      {
        children: [{
          data: { id: 4, group: 1003, name: "Airbus A320" },
        }],
        data: { id: 3, group: 1002, name: "Planes" }
      },
      {
        children: [{
          data: { id: 6, group: 1005, name: "Departed" }
        }],
        data: { id: 5, group: 1006, name: "movies" }
      }
    ]

In my application the User selects a Tablerow and i get the selected Row Information aka the 'data' object e.g.

{ id: 2, group: 1001, name: "Audi" }

Now i want to find that selected data object based on the Id in my Array using lodash or javascript/typescript.

How would i achive that? The children Array causes me problems.

EDIT: The Child of a Child should also be found.

{
        children: [{
          children: [{
             data: {id : 7, group 1001, name: "A8"},
             children: [{...}]
          }],
          data: { id: 2, group: 1001, name: "Audi" },
        }],
        data: { id: 1, group: 1000, name: "Cars" }
      }

@PatrickRoberts In TypeScript or JavaScript doesnt matter at the moment. — TheWandererr
– TheWandererr, Commented Oct 16, 2018 at 15:19
Do you want to find the data object inside the array for the selected data object's id or do you want to find the data inside the children array for the select data object's id ? — Mark C.
– Mark C., Commented Oct 16, 2018 at 15:25
Other possible duplicate: stackoverflow.com/questions/50381450/… — Mulan
– Mulan, Commented Oct 16, 2018 at 15:50

mpm · Accepted Answer · 2018-10-16 15:35:22Z

/** find by id data using recursion */
function findById(data, id) {
  for (const datum of data) {
    if (datum.data.id == id) return datum
    if (datum.children) {
      let result = findById(datum.children, id)
      if (result) return result
    }
  }
}


let example = [{
    children: [{
      data: {
        id: 2,
        group: 1001,
        name: "Audi"
      },
    }],
    data: {
      id: 1,
      group: 1000,
      name: "Cars"
    }
  },
  {
    children: [{
      data: {
        id: 4,
        group: 1003,
        name: "Airbus A320"
      },
    }],
    data: {
      id: 3,
      group: 1002,
      name: "Planes"
    }
  },
  {
    children: [{
      data: {
        id: 6,
        group: 1005,
        name: "Departed"
      }
    }],
    data: {
      id: 5,
      group: 1006,
      name: "movies"
    }
  }
]



console.log(findById(example, 2))

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