Chapter 7

JavaScript Arrays

Key Skills & Concepts

   Defining and Accessing Arrays

   Array Properties and Methods

   Using Arrays with Loops

   Nesting Arrays

In this chapter, you are going to learn about JavaScript arrays and what they can do to help you improve your scripts. You will begin with a basic overview of what arrays are and why they are useful, and you will learn how to define and access arrays in JavaScript. After that, you will learn about helpful properties and methods that can be used with arrays. Finally, you will learn how to nest arrays to provide additional levels of organization.

What Is an Array?

An array is a way of storing a list of data (for example, a list of favorite colors or favorite foods). These values are ...

Get JavaScript: A Beginner's Guide, Fifth Edition, 5th Edition now with the O’Reilly learning platform.

O’Reilly members experience books, live events, courses curated by job role, and more from O’Reilly and nearly 200 top publishers.