ES2019 added the Array flatMap() method to JavaScript. The flatMap() method first maps all elements of an array and then creates a new array by flattening the array.

Feb 24, 2026 · The Array object, as with arrays in other programming languages, enables storing a collection of multiple items under a single variable name, and has members for performing common …

Aug 5, 2025 · To help you perform common tasks efficiently, JavaScript provides a wide variety of array methods. These methods allow you to add, remove, find, and transform array elements with ease.

This section provides you with the JavaScript Array methods that allow you to manipulate arrays effectively.

Afterwards whenever you need to do something with an array, and you don’t know how – come here, look at the cheat sheet and find the right method. Examples will help you to write it correctly.

Sep 6, 2025 · It provides a lot of built-in methods to create, modify, search, and even transform arrays result. In this article i covers most of array methods, with examples.

Array methods in JavaScript are built-in functions that you can use to perform operations on arrays. They provide a way to manipulate arrays and work with the elements stored in them.

In JavaScript, Array is a built-in global object that allows you to store multiple elements at once. In this reference page, you will find all the Array methods and their properties.

// Copy portion of array const portion = arr.slice(1, 3); // Items at index 1, 2 const last3 = arr.slice(-3); // Last 3 items const copy = arr.slice(); // Full copy // Combine arrays const combined = …

This blog post will serve as a comprehensive guide to JavaScript array methods, covering their fundamental concepts, usage, common practices, and best practices.