Udacity Logo
Log InJoin for Free

JavaScript and the DOM


Last Updated March 7, 2022


No experience required

Course Lessons

Lesson 1

The Document Object Model

The Document Object Model (DOM) allows developers to interact with and control the rendered page. You'll learn how the DOM is formed, what Nodes and Elements are, and how to select items from the DOM.

Lesson 2

Creating Content with JavaScript

Static is boring, so we'll use JavaScript and DOM methods to create new page content, update existing content, and delete content. You'll also learn how to check and set the styling of page elements.

Lesson 3

Working with Browser Events

Hundreds of events fire every time you interact with a page. Learn what an event is, how to listen for an event and respond to it, what data is included with an event, and the phases of an event.

Lesson 4


Learn how to measure the code you write to make sure it's performing efficiently and how reflow and repaint affect performance. Learn how to harness the JavaScript Event loop for performance gains.

Taught By The Best

Photo of Richard Kalehoff

Richard Kalehoff


Richard is a Course Developer with a passion for teaching. He has a degree in computer science, and first worked for a nonprofit doing everything from front end web development, to backend programming, to database and server management.

The Udacity Difference

Combine technology training for employees with industry experts, mentors, and projects, for critical thinking that pushes innovation. Our proven upskilling system goes after success—relentlessly.

Demonstrate proficiency with practical projects

Projects are based on real-world scenarios and challenges, allowing you to apply the skills you learn to practical situations, while giving you real hands-on experience.

  • Gain proven experience

  • Retain knowledge longer

  • Apply new skills immediately

Top-tier services to ensure learner success

Reviewers provide timely and constructive feedback on your project submissions, highlighting areas of improvement and offering practical tips to enhance your work.

  • Get help from subject matter experts

  • Learn industry best practices

  • Gain valuable insights and improve your skills