How to add a static key value pair to every item in an array?

Question

I have the below array:

[
    { id: 1, name: 'A' },
    { id: 2, name: 'B' }
]

How can I add a key-value pair in each array item as the best practice? For example:

[
    { id: 1, name: 'A', new: true },
    { id: 2, name: 'B', new: true }
]

What have you tried and where is the problem with your own attempt? — UnholySheep, Jun 01 '22 at 12:15
Does this answer your question? [Add property to all objects in array](https://stackoverflow.com/questions/36677787/add-property-to-all-objects-in-array) — pilchard, Jun 01 '22 at 12:16
Can you add more details about the issue and the options you already tried.? — Rajendrasinh Parmar, Jun 01 '22 at 12:16

score 1 · Answer 1 · answered Jun 01 '22 at 12:17

1

I would recommend using the map array method like this:

const newArray = oldArray.map((element) => ({...element, newKey: newValue}))

answered Jun 01 '22 at 12:17

Peter Kusza

1 Answers1