Learn JavaScript

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

4.46 out of 5 stars
2,092,786 learners enrolled
  • Skill level

  • Time to complete

    Average based on combined completion rates — individual pacing in lessons, projects, and quizzes may vary
    15 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 • 9 quizzes

The platform

Hands-on learning

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Mobile-friendly version of a lesson and code editor for the course 'Introduction to HTML' running in Codecademy's learning environment
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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

4.46 out of 5 stars
26,010 ratings
  1. 5 stars
  2. 4 stars
  3. 3 stars
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  5. 1 star
  • Super interactive course that spells most of the abstract parts of this language into an easy-to-digest manner. There's a lot of insight in the forum and I thought it was the most conducive to progress, as I found that some of my "classmates" were also having similar questions to mine.
    Mark P.
    Verified Learner
  • Each step of the course was clearly explained and the activities naturally deepened my understanding of each concept. I finished it feeling more confident in my knowledge of JavaScript than I have with other courses of similar content.
    Sarah B.
    Verified Learner
  • I recently had the opportunity to dive into the JavaScript course offered by Codecademy, and I must say it was an exceptional learning experience. The course stands out as a comprehensive and well-structured program that caters to learners of all levels, from beginners to more advanced developers.
    Khairul R.
    Verified Learner

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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.

Join over 50 million learners and start Learn JavaScript today!

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.