Learn JavaScript
From Basics to the Browser

25 lessons from fundamentals through async/await, DOM manipulation, generators, web workers, and form validation. Learn by writing real code.

25Lessons
100+Code Examples
FreeForever
Try JavaScript in 30 seconds
1console.log("Hello, JavaScript!");
30 sec demo

Why Learn JavaScript?

Discover the benefits of learning JavaScript, the language of the web.

Universal Language

Run your code in browsers, servers, mobile apps, and even IoT devices.

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Rich Ecosystem

Access millions of packages through npm, the largest software registry.

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Interactive Development

See changes instantly with hot reloading and browser dev tools.

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Frequently Asked Questions

What is JavaScript used for?
JavaScript is a popular programming language used for Go from zero to building real web apps with JavaScript. Cover ES6+ features, async programming, DOM manipulation, and modern patterns with our free interactive playground. It has a large ecosystem and is widely adopted in industry.
How do I start learning JavaScript for free?
LearningJavaScript.org offers a free, structured curriculum of interactive lessons you can complete in your browser — no installation required. Start with lesson one and run real JavaScript code instantly using the built-in playground.
How long does it take to learn JavaScript?
Most beginners can grasp JavaScript fundamentals within 2–4 weeks of consistent practice. Our curriculum covers core concepts through 25 hands-on lessons you can progress through at your own pace.
Do I need to install JavaScript to follow this course?
No installation is needed. Every lesson on LearningJavaScript.org runs JavaScript code directly in the browser using a secure, sandboxed playground. Just open a lesson and start coding.