Learn JavaScript Online
From Basics to the Browser

A free interactive JavaScript tutorial from fundamentals through arrays, objects, async/await, DOM events, browser APIs, and form validation.

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

Can I learn JavaScript online for free here?
Yes. LearningJavaScript.org provides free interactive lessons and a JavaScript playground for fundamentals, arrays, objects, async code, DOM events, and browser APIs.
Is this JavaScript course for beginners?
Yes. The course starts from variables, types, functions, and control flow before moving into async programming, modules, testing, and browser APIs.
Can I run JavaScript without a local setup?
Yes. The playground lets you run JavaScript code directly in the browser, so you can practice before installing Node or configuring a project.
What should I practice after JavaScript basics?
After variables and functions, focus on arrays and objects, closures, async/await, DOM events, modules, fetch, and debugging.