Does array include object with specific key? [duplicate]

Question

I need to find out if an array of a JS object includes an object with a specific key.

I am using,

my_array.filter((e) => Object.keys(e).includes(my_key)).length > 0

but there must be a way to do it simpler.

Bergi · Accepted Answer · 2022-09-24 19:30:47Z

0

Instead of .filter(…).length > 0, use .some(…).

Instead of Object.keys(…).includes(…), use … in … (or Object.hasOwn(…, …) if you need to ignore inherited properties).

So

my_array.some(e => my_key in e)

answered Sep 24, 2022 at 19:30

Bergi

671k162 gold badges1k silver badges1.5k bronze badges

Sign up to request clarification or add additional context in comments.

Comments

André Alçada Padez · Accepted Answer · 2022-09-24 19:23:23Z

0

instead of filter use some, already returns true or false and it shortcircuits as soon as it finds the first

answered Sep 24, 2022 at 19:23

11.7k26 gold badges72 silver badges130 bronze badges