How do I know which equal number contains me?

Question

I have array like this:

let A = [1,2,3,4,5,6,7]

and I want Which parameter is equal === 4

array.includes(4) //true

Top code just show me true but i want show me array[3] is 4

Use `.findIndex` method of array to get the index e.g. A.findIndex(num => num == 4); — khizer, Aug 07 '21 at 08:04

score 3 · Accepted Answer · answered Aug 07 '21 at 07:46

3

You should use .indexOf() instead of .includes()

let A = [1,2,3,4,5,6,7]
let index = A.indexOf(4)

Output : index = 3

answered Aug 07 '21 at 07:46

Suyash Gaur

1 Answers1