Free
Course

Learn JavaScript

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

4.6 out of 5 stars
2,412,897 learners enrolled
  • Skill level

    Beginner
  • Time to complete

    Approx. 20 hours
  • Certificate of completion

    Included with paid plans
  • Prerequisites

    None

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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

Syllabus

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.

Reviews from learners

  • The progress I have made since starting to use codecademy is immense! I can study for short periods or long periods at my own convenience - mostly late in the evenings.
    Chris
    Codecademy Learner @ USA
  • I felt like I learned months in a week. I love how Codecademy uses learning by practice and gives great challenges to help the learner to understand a new concept and subject.
    Rodrigo
    Codecademy Learner @ UK
  • Brilliant learning experience. Very interactive. Literally a game changer if you're learning on your own.
    John-Andrew
    Codecademy Learner @ USA

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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.

Ratings from learners

4.6 out of 5 stars
5,120 ratings
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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.