Array - JavaScript | MDN

Arrays and Important Built-in Functions in JavaScript

Arrays in JavaScript

An array is a special type of object used to store multiple values in a single variable. Arrays are a fundamental part of JavaScript and are widely used for storing and manipulating lists of data.

• Adding/Removing Elements: push(), pop(), shift(), unshift(), splice()
• Accessing Elements: indexOf(), find(), findIndex(), includes()
• Iteration Methods: forEach(), map(), filter(), reduce(), flatMap()
• Array Conversion Methods: slice(), concat(), flat(), join()
• Sorting/Transforming Methods: sort(), reverse()
• Checking/Testing Methods: every(), some()

Summary

Arrays are a powerful and versatile data structure in JavaScript. The built-in array methods make it easy to manipulate, search, and transform arrays efficiently. Understanding and utilizing these methods is essential for effective JavaScript programming, especially in web development where array manipulation is a common task.

Adding/Removing Elements

Accessing Elements

Iteration Methods

Array Conversion Methods

Sorting/Transforming Methods