Create list of IDs of selected objects in an array

Question

If I've got

var aaa = [
 {"id": 1, "text": "Ann"},
 {"id": 2, "text": "Bob"},
 {"id": 3, "text": "Carol"},
 {"id": 4, "text": "Carol"},
]

and I want to get all the elements that text "Carol" but specifically I want just their IDs.What do I do?

Use [`.filter`](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/filter) and [`.map`](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/filter). See also [From an array of objects, extract value of a property as array](https://stackoverflow.com/q/19590865/218196) — Felix Kling, Sep 07 '20 at 10:49
Use a for loop and if the object's `text` is `"Carol"`, push its `id` to an output array — adiga, Sep 07 '20 at 10:51

score 0 · Answer 1 · answered Sep 07 '20 at 10:49

0

Try

let idList = aaa.filter(a => a.text == 'Carol').map(({ id }) => id);

answered Sep 07 '20 at 10:49

Dalibor

1 Answers1