Learn JavaScript

Learn how to use JavaScript — a powerful and flexible programming language for adding website interactivity.

4.6 out of 5 stars
2,342,412 learners enrolled
  • Skill level

  • Time to complete

    Approx. 20 hours
  • Certificate of completion

    Included with paid plans
  • Prerequisites


About this course

You interact with JavaScript code all the time — you just might not realize it. It powers dynamic behavior on websites (like this one) and plays an important role in many fields, like front- and back-end engineering, game and mobile development, virtual reality, and more. In this course, you’ll learn JavaScript fundamentals that will be helpful as you dive deeper into more advanced topics.

Skills you'll gain

  • Build core programming concepts

  • Learn object-oriented concepts

  • Read and write JavaScript


11 lessons • 12 projects • 8 quizzes
The platform

Hands-on learning

Don’t just watch or read about someone else coding — write your own code live in our online, interactive platform. You’ll even get AI-driven recommendations on what you need to review to help keep you on track.
Animated demonstration of running code in Codecademy's learning environment
Meet the creator of the course
Kenny Lin
Web Development Domain Manager at Codecademy
Kenny is the Domain Manager for the Web Development Domain at Codecademy. He contributed to a wide range of courses and paths at Codecademy, including JavaScript, Bootstrap, Handlebars, Phaser.js, Go, Swift, TypeScript, and Lua.

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Unlock additional features with a paid plan

Practice Projects

Guided projects that help you solidify the skills and concepts you're learning.


Auto-graded quizzes and immediate feedback help you reinforce your skills as you learn.

Certificate of Completion

Earn a document to prove you've completed a course or path that you can share with your network.

Ratings & reviews from learners

4.6 out of 5 stars
3,644 ratings
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  5. 1 star
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Most recent
  • 4 out of 5 stars
    Jeevan Bohara5 days ago
    This is very easy course to learn but some of the features are only available paid user
  • 5 out of 5 stars
    David P5 days ago
    I've gone through beginner-level JavaScript courses before, but none compare to Codecademy! The structure of this course was practically flawless. Each lesson built my understanding precept upon precept. It was laid out logically, with good reason.
  • 3 out of 5 stars
    marisa m5 days ago
    very difficult figuring out how the descriptions lined up with the examples. some of the earlier lessons had diagrams that were very helpful.
  • 5 out of 5 stars
    Julia D5 days ago
    Very helpful for beginners. Breaks things down into bite-sized pieces that are easily digestible. Provides a good foundation for understanding the basics of programming. The exercises are also very helpful in helping to solidify the concepts that are being taught.
  • 4 out of 5 stars
    Joe F.5 days ago
    Learning curve quickly becomes overwhelming at Loops, and some materials are "mention first, explain later" which can be confusing. Otherwise, very good crash course!
  • 5 out of 5 stars
    Tony Figueira5 days ago
    amazing, it looks at times too good to be true, i super recommend this Academy.

Join over 50 million learners and start Learn JavaScript today!


Frequently asked questions about JavaScript

  • JavaScript is one of the most popular languages in the world. It’s powerful and versatile, and with HTML and CSS, it forms the foundation of modern web development.