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.

Jan 18, 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.

Apr 3, 2025 · Several of the built-in array methods (e.g., join(), slice(), indexOf(), etc.) take into account the value of an array's length property when they're called. Other methods (e.g., push(), splice(), etc.) also result in updates to an array's length property.

May 21, 2021 · What is an Array in JavaScript? A pair of square brackets [] represents an array in JavaScript. All the elements in the array are comma(,) separated. In JavaScript, arrays can be a collection of elements of any type. This means that you can create an array with elements of type String, Boolean, Number, Objects, and even other Arrays.

Apr 7, 2025 · JavaScript arrays are powerful tools for managing collections of data. They come with a wide range of built-in methods that allow developers to manipulate, transform, and interact with array elements. Some of the most important array methods in JavaScript are. 1. JavaScript push () Method. 2. JavaScript pop () Method. 3. JavaScript shift () Method.

This section provides JavaScript Array methods that allow you to manipulate arrays effectively. Section 1. Array properties. length property – show you how to use the length property of an …

Dec 31, 2023 · Arrays provide a lot of methods. To make things easier, in this chapter, they are split into groups. We already know methods that add and remove items from the beginning or the end: arr.unshift(...items) – adds items to the beginning. Here are a few others. How to delete an element from the array?

Feb 17, 2021 · If you're a JavaScript developer and want to improve your coding, then you should be familiar with the most commonly used ES5 and ES6+ array methods. These methods make coding a lot easier and also make your code look clean and easy to understand.

Mar 27, 2023 · In JavaScript, an array is an object constituted by a group of items having a specific order. Arrays can hold values of mixed data types and their size is not fixed. You can create an array using a literal syntax – specifying its content inside square brackets, with each item separated by a comma.

JavaScript arrays offer a wide variety of methods to handle elements efficiently. These methods cover a range of operations, including adding or removing elements, transforming data, and more. In this article, we will explore 26 common array methods along with 3 static methods.