JavaScript, how to replace an item of an array

Given an array, if you know the index of an item you can replace its content using a simple assignment:

const items = ['a', 'b', 'c', 'd', 'e', 'f']
const i = 2

items[i] = '--NEW-ITEM--'

console.log(items)
//[ 'a', 'b', '--NEW-ITEM--', 'd', 'e', 'f' ]

If you don’t know the index of the item, you might need to first find the index of the item in the array.

Download my free JavaScript Beginner's Handbook and check out my JavaScript Masterclass!

⭐️ Join the waiting list for the JavaScript Masterclass ⭐️