Learn JavaScript

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

4.6 out of 5 stars
2,328,908 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
3,349 ratings
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  5. 1 star
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Most recent
  • 4 out of 5 stars
    Joel A1 day ago
    I wish there was more practice throughout to give me extra opportunities to see the concepts implemented in code.
  • 5 out of 5 stars
    Antoni P1 day ago
    It's perfect . Even though you are a completly beginner you will learn and have so much fun.
  • 4 out of 5 stars
    Abby G1 day ago
    It took me 25 hours to complete this JavaScript course. I enjoyed the examples, and found support when I was stuck.
  • 5 out of 5 stars
    Ararat_M2 days ago
    The most important is that the platform is very interactive and to the point. ease to jump into reference links etc. Thank you! Regards, Ararat_M!
  • 4 out of 5 stars
    Prince A2 days ago
    Easy to follow material. Include more everyday life scenarios in the examples rather than just robots and spaceships.
  • 5 out of 5 stars
    Ntuthuko B2 days ago
    As someone with some exposure on most of the content, I found it great even with concpets I wasn't too familiar with. The site is worth the money, I'm just unemployed currently, so unfortunately can't commit to it, but for those who can afford to make the investment, it's money well spent I rate.

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.