Sep 28, 2025 · This example shows three ways to create new array: first using array literal notation, then using the Array() constructor, and finally using String.prototype.split() to build the array from a string.

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.

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.

Explore JavaScript array functions in detail with examples and practical use cases. Learn how to leverage these methods to simplify your code and boost efficiency.

Aug 21, 2024 · Unlock the power of JavaScript with built-in array methods. Learn how to manipulate arrays efficiently using functions like map, filter, reduce, and more in this essential guide.

Almost all array methods that call functions – like find, filter, map, with a notable exception of sort, accept an optional additional parameter thisArg. That parameter is not explained in the sections …

May 21, 2020 · A Cheat Sheet to quickly find all functions that can be executed on a JavaScript Array. It includes a quick explanation, the syntax, an example, and the browser support.

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Each value (also called an element) in an array has a numeric position, known as its index, and it can contain data of any type—numbers, strings, booleans, functions, objects, and even other arrays: