Merge objects in arrays

Question

I have two arrays:

[{Name: "Jack", Depot: "5"}, {Name: "Jill", Depot: "6"}]

and

[{Depot Name: "Edgware"}, {Depot Name: "Romford"}]

I need to take the objects from the second array and merge them with the objects in the first array to produce a result of:

[{Name: "Jack", Depot: "5", Depot Name: "Edgware"}, {Name: "Jill", Depot: "6", Depot Name: "Romford"}]

Any help with this would be much appreciated

@BeeNag This is not a get code for free site. Please try it yourself first. — Feathercrown, Sep 09 '16 at 15:18
[`arr1.map((o, i) => Object.assign({}, o, arr2[i]))`](https://jsfiddle.net/tusharj/ut5s4z05/) — Tushar, Sep 09 '16 at 15:18

Laurianti · Accepted Answer · 2016-09-09T16:27:26.560

7

var array1 = [{
  Name: "Jack",
  Depot: "5"
}, {
  Name: "Jill",
  Depot: "6"
}];
var array2 = [{
  'Depot Name': "Edgware"
}, {
  'Depot Name': "Romford"
}];

for (var a in array1) {
  for (var p in array1[a]) {
    //to esclude all possible internal properties
    if (array1[a].hasOwnProperty(p)) {
  array2[a][p] = array1[a][p];
    }
  }
}

console.log(array2);

edited Sep 09 '16 at 16:27

answered Sep 09 '16 at 15:19

Laurianti

903
1
5
19

Add an .hasOwnProperty() check to your solution and it's good. – Danmoreng Sep 09 '16 at 15:42
Why? Explain me please. – Laurianti Sep 09 '16 at 15:52
There is the possibility of internal properties. You're right. – Laurianti Sep 09 '16 at 16:23

Pugazh · Answer 2 · 2016-09-09T15:28:13.580

Here is a solution with Object.assign().

P.S: Check for browser compatibility, this solution might not work in IE

var arr1 = [{
  "Name": "Jack",
  "Depot": "5"
}, {
  "Name": "Jill",
  "Depot": "6"
}];

var arr2 = [{
  "Depot Name": "Edgware"
}, {
  "Depot Name": "Romford"
}];

var arr1Copy = arr1;
var newArr = arr1Copy.map(function(v, i) {
  return Object.assign(v, arr2[i]);
});

console.log(newArr);

Merge objects in arrays

2 Answers2