Learn JavaScript

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

4.48 out of 5 stars
2,494,057 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.

Learn JavaScript course ratings and reviews

4.48 out of 5 stars
38,318 ratings
  1. 5 stars
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  5. 1 star
  • I've taken courses through a coding school where I live as well as on Udacity and Pluralsight, but this Codecademy course made objects, methods, getters and setters, and so many key concepts so much more plain and simple for me. With the other courses, I assumed it was something I'd get "one day" and just plodded along to keep learning.
    Ariel A.
    Verified Learner
  • 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.
    David P.
    Verified Learner
  • 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.
    Julia D.
    Verified Learner

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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.
  • Assessments

    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.

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.