// Book //

Understanding the DOM — Document Object Model eBook

Published on October 8, 2020
Default avatar
By Tania Rascia
Developer and author at DigitalOcean.
Understanding the DOM — Document Object Model eBook

Introduction to the eBook

JavaScript is the de facto programming language of the web, but the language itself does not include any built-in method for working with input/output (I/O), such as graphics display and sound. Instead, the web browser provides an API for accessing the HTML document in a tree structure known as the Document Object Model (DOM). The combination of JavaScript and the DOM is what allows us to create interactive, dynamic websites.

Many modern frameworks, such as React, Vue, and Svelte abstract away much of the DOM from the developer, but frameworks also use the DOM under the hood. The JavaScript library jQuery was also created to make working with the DOM easier, but the modern development practice is to work with the DOM directly. In order to be a proficient web developer, having a deep understanding of what the DOM is and how to work with it is essential. The goal of this book is to provide a base understanding of the DOM, as well as explore examples of the most common and useful methods for interacting with the DOM.

This book is based on the Understanding the DOM tutorial series found on the DigitalOcean Community. The topics that it covers include:

  • The DOM and DOM tree structure
  • How to access, traverse, and modify nodes and elements in the DOM
  • How to modify attributes, classes, and styles in the DOM
  • Use events to make interactive, dynamic websites

Each chapter is self-contained and can be followed independently of the others. However, if you are not yet familiar with the concept of the DOM and DOM tree, it is recommended that you read the introductory chapters first.

Download the eBook

You can download the eBook in either the EPUB or PDF format by following the links below.

If you’d like to learn more about JavaScript, visit the DigitalOcean Community’s JavaScript section. You can follow along with the How to Code in JavaScript series for a directed learning experience.


Want to learn more? Join the DigitalOcean Community!

Join our DigitalOcean community of over a million developers for free! Get help and share knowledge in our Questions & Answers section, find tutorials and tools that will help you grow as a developer and scale your project or business, and subscribe to topics of interest.

Sign up

Tutorial Series: Understanding the DOM — Document Object Model

The Document Object Model, usually referred to as the DOM, is an essential part of making websites interactive. It is an interface that allows a programming language to manipulate the content, structure, and style of a website. JavaScript is the client-side scripting language that connects to the DOM in an internet browser.

About the authors
Default avatar
Developer and author at DigitalOcean.

Still looking for an answer?

Was this helpful?
1 Comments

This textbox defaults to using Markdown to format your answer.

You can type !ref in this text area to quickly search our full set of tutorials, documentation & marketplace offerings and insert the link!

Thank you Tania, this is such an excellent tutorial on the DOM!

It is essential reading before tackling javascript frameworks such as react.js & vue.js ; for example it explains why a vue ‘app’ is attached to a DOM node, and how that works at the DOM level.