Using an array literal is the easiest way to create a JavaScript Array. Syntax: const array_name = [item1, item2, ...]; It is a common practice to declare arrays with the const keyword. Learn …

Destructuring assignment makes it possible to extract data from arrays or objects using a syntax that mirrors the construction of array and object literals. The object and array literal …

Feb 20, 2018 · reverseArray(): returns a new array which is the reverse of the argument array. reverseArrayInPlace(): just reverses the argument array itself. Inside reverseArrayInPlace(), I …

May 16, 2022 · In this article I showed you three ways to create an array using the assignment operator, Array constructor, and Array.of() method. The most common way to create an array …

Oct 22, 2024 · Initializing an array in JavaScript involves creating a variable and assigning it an array literal. The array items are enclosed in square bracket with comma-separated elements. …

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., …

JavaScript array is a special type of variable, which can store multiple values using a special syntax. Learn what is an array and how to create, add, remove elements from an array in …

How to merge two arrays in JavaScript and de-duplicate items. Use the concat function, like so: The value of newArray will be [1, 2, 3, 4] (arrayA and arrayB remain unchanged; concat …

JavaScript provides you with two ways to create an array. The first one is to use the Array constructor as follows: The scores array is empty, which does hold any elements. If you know …

Nov 14, 2022 · There are two standard ways to declare an array in JavaScript. These are either via the array constructor or the literal notation. In case you are in a rush, here is what an array …