how to change the key value of an object

Question

There are 2 objects 1)

var obj1 = {
id: 1,
firstName: 'someFirst',
lastName: 'someLast',
status: 'active',
}

2)

var obj2 = {
firstName: 'test',
status: 'disable',
}

how can I change the key value of the first object based on the key values of the second object? Expected result is:

obj1 = {
id: 1,
firstName: 'test',
lastName: 'someLast',
status: 'disable',
}

Many thanks!

What is the expected output? – Arup Rakshit May 14 '19 at 21:05 — Arup Rakshit, May 14 '19 at 21:05
^ this this is what I meant to ask – Naftali May 14 '19 at 21:05 — Naftali, May 14 '19 at 21:05
I added the expected result – Oh this crazy voices May 14 '19 at 21:08 — Oh this crazy voices, May 14 '19 at 21:08

score 2 · Answer 1 · answered May 14 '19 at 21:05

2

 Object.assign(/*to*/ obj1, /*of*/ obj2);

answered May 14 '19 at 21:05

Jonas Wilms

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score 0 · Answer 2 · answered May 14 '19 at 21:06

Object.assign(obj1, obj2) will merge the two objects together, where obj1 is the base object, and obj2 will replace any identical properties on the base object with its values.

In your example, this would return

{
  id: 1,
  firstName: 'text',
  lastName: 'someLast',
  status: 'disable',
}

Arup Rakshit · Answer 3 · 2019-05-14T21:25:41.940

-1

You can do newObject = Object.assign({}, obj1, obj2).

Or use the object spread operator like: newObject = {...obj1, ...obj2}.

Do not mutate the original object.

edited May 14 '19 at 21:25

answered May 14 '19 at 21:06

Arup Rakshit

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how to change the key value of an object

3 Answers3