Array 🚀

: Fetching a value by its index is extremely fast ( time complexity).

An array is a fundamental data structure used in programming to store an ordered collection of items of the same type in a single variable. Think of it like a row of buckets where each bucket holds one specific piece of data, such as a number or a string. : Fetching a value by its index is

: Removing or adding elements at the beginning is slower because the computer must shift every other item to a new position. : Removing or adding elements at the beginning

: Transforms every item in an array and returns a new one. Leaderboards : Keeping track of scores in a game

: Using 2D arrays to represent the grid of pixels in a digital photo. Leaderboards : Keeping track of scores in a game.

For a deeper dive into technical implementation, you can explore the Array cheatsheet on the for coding prep or the Complete Guide to JavaScript Arrays on the ServiceNow Community forum. Everything you needed to know and more about Array.map