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
3,106 ratings
  1. 5 stars
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  5. 1 star
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Most recent
  • 5 out of 5 stars
    Joseniel V7 days ago
    I've been trying to learn JavaScript for a while now. Tried different websites and their explanations and courses didn't made any sense and Code Academy explain things so well for beginners like me. Thank You
  • 5 out of 5 stars
    Prasan S.7 days ago
    The course was great due to the in depth help videos as well as the paragraphs explaining the content. Additionally, the positive reinforcement with the messages if a question was answered incorrectly was very supportive since coding is a hard subject and may be demoralizing at times. It was good to have a reminder that the questions aren't a final diagnosis.
  • 5 out of 5 stars
    Jacob W7 days ago
    Excellent course with a step up kind of structure where you build up on previous skills learned. Also, the hint tab helps when you are doubting what you just coded and need some reassurance.
  • 5 out of 5 stars
    Abbos Dadamakhmatov7 days ago
    The course is very comprehensible. However, I would love to see video instructions more than text ones as many people including me are more intrigued by visual lessons rather than text ones.
  • 5 out of 5 stars
    irman w7 days ago
    Explains everything quite well
  • 5 out of 5 stars
    DERLIS F.8 days ago
    I learned a lot with this course, it was really good.

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.