Javascript Access Multidimensional Array Object

Question

i have this Object. i want to get the value of "label" dynamically. How do i do this?

var obj = {
  "Admin": true,
     "User": {
        "Someguy": [
          {
            "label": "NG59",
            "Id": 2094602823
          },
          {
            "label": "NG60",
            "Id": 3473631702,
          }
       ]
    }
}

What i've tried:

Object.keys(obj.User)[0] // returns "Someguy"

Object.keys(obj.User)[0][0] // trying to get "label", returns undefined Object.keys(obj.User)[0].label // undefined

How do i access "label" or "Id" dynamically?

Just use `obj.User.Someguy[0].label`. Or if you don't know the property name `Someguy`, it's `name = Object.keys(obj.User)[0]; obj.User[name][0].label`. — Bergi, Nov 24 '17 at 11:08

Faly · Answer 1 · 2017-11-24T11:26:50.650

1

Try this:

var obj = {
  "Admin": true,
  "User": {
    "Someguy": [
      {
        "label": "NG59",
        "Id": 2094602823
      },
      {
        "label": "NG60",
        "Id": 3473631702,
      }
  ]
 }
};

var guy = "Someguy";
var label = Object.values(obj.User[guy][0])[0];
console.log(label);

edited Nov 24 '17 at 11:26

answered Nov 24 '17 at 11:08

Faly

13,291
2
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well, this returns label, not the value saved in label. – David Nov 24 '17 at 11:09
Replace `Object.keys` with `Object.value` to get the value. – David Nov 24 '17 at 11:12
And sorry, i forgot to mention, that i can't access `.Someguy`, because its generated variable. – David Nov 24 '17 at 11:14
I've just updated – Faly Nov 24 '17 at 11:27

Nina Scholz · Accepted Answer · 2017-11-24T11:14:09.533

1

You need to take the key for the object to access the inner objects.

var obj = { Admin: true, User: { Someguy: [{ label: "NG59", Id: 2094602823 }, { label: "NG60", Id: 3473631702 }] } },
    key = Object.keys(obj.User)[0];

console.log(key);
console.log(obj.User[key][0].label);

edited Nov 24 '17 at 11:14

answered Nov 24 '17 at 11:08

Nina Scholz

376,160
25
347
392

thanks alot! `obj.User[Object.keys(obj.User)[0]][0].label;` works fine! – David Nov 24 '17 at 11:24

Javascript Access Multidimensional Array Object

2 Answers2