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JS Exercises is a browser-based JavaScript practice platform for learners who want to build fluency by writing code, not just watching tutorials. The site combines guided courses, topic-based exercises, instant test feedback, and small projects, so beginners can move from syntax to real problem solving in one place. Lessons start with fundamentals like variables, strings, functions, arrays, and objects, then expand into DOM work, browser events, async JavaScript, fetch, JSON, and project practice. Public pages explain what each course, resource, project, and exercise is for before a user signs in. Free content is available without a credit card, and paid access unlocks the full curriculum. It is designed for self-paced learners, classrooms, and interview preparation. JS Exercises is maintained by JS Exercises, and this overview was last updated in June 2026. The goal is practical JavaScript confidence: read a prompt, make a decision, write code, run tests, and understand why the result works.

It depends on your starting point and how consistently you practice. JS Exercises is built to help you move from basic JavaScript syntax to confident problem solving through short, focused coding exercises, guided lessons, and browser projects you can repeat until the patterns feel natural.

Yes. The curriculum starts with JavaScript fundamentals like variables, strings, numbers, conditionals, functions, arrays, and objects before moving into DOM manipulation, events, async JavaScript, and projects. You can start in the browser without setting up a local development environment.

The best JavaScript practice is active: read a realistic prompt, write code yourself, run tests, fix mistakes, and then solve similar problems until the concept transfers. JS Exercises gives you that feedback loop directly in the browser instead of relying only on videos or passive tutorials.

Paid access includes the full JavaScript exercise library, guided course curriculum, and projects covering fundamentals, functions, arrays, objects, loops, higher-order methods, DOM manipulation, browser events, async code, JSON, fetch, error handling, and more.

Yes, it is useful preparation for frontend interviews, bootcamp practice, and junior developer skill building because it trains everyday JavaScript fluency. It is not a replacement for building portfolio projects, but it helps you get faster and more accurate with the language skills those projects require.

No. You can write, run, and test JavaScript directly in your browser, which makes it easy to practice from a laptop, school computer, or quick study session. As you progress, you can still apply the same skills in Node.js, VS Code, and real-world frontend projects.

Yes. A subset of JavaScript exercises and lessons is free forever, and you do not need a credit card to start. Upgrading unlocks the full curriculum, premium practice sets, guided projects, and new content added while your subscription is active.

Yes. You can cancel from your account settings and keep access until the end of the billing period you have already paid for. There are no cancellation fees.

Not yet. If you want JavaScript training seats for a team, school, bootcamp, or company, email us and we will let you know when group billing is available.