Write your first JavaScript line today, and build real apps by the end.
LearnJS is a complete JavaScript course built for your phone. Whether you're a total beginner or preparing for a JavaScript interview, our step-by-step roadmap guides you through every concept with a built-in JavaScript compiler, so you write real code on the same screen you learn.
No laptop needed. Code, run, and debug JavaScript directly from your phone.
WHY LEARNJS?
Built-in JavaScript compiler - write and run real code instantly on mobile
Project-driven curriculum - build functional JavaScript projects, not toy examples
Visual roadmaps - see your learning path, unlock each topic step by step
Gamified streaks and achievements - build a daily JavaScript practice habit
Quiz after every topic - solidify what you've learned before moving on
Covers Beginner to Advanced: ES6, async/await, OOP, DOM manipulation
BUILT-IN JS COMPILER
Our mobile JavaScript compiler gives you a full editor with syntax highlighting, auto-indentation, and quick-access tabs for common syntax (const, function, console.log, arrow functions). Run your code and see console output instantly - no setup, no IDE required.
WHAT YOU'LL LEARN
Beginner: Variables, data types, operators, conditionals, loops
Intermediate: Functions, arrays (map/filter/reduce), objects, error handling, regex
Advanced: DOM manipulation, OOP, closures, hoisting, Promises, async/await, ES6 modules
TRACK YOUR PROGRESS
See daily streaks, quiz accuracy, compiler runs, chapters completed, and earned badges — all in one profile dashboard. Customise your editor theme and set daily reminders to keep your JavaScript learning streak going.
PERFECT FOR
Beginners starting their JavaScript journey from zero
Students preparing for CS exams and JavaScript interview questions
Developers building JavaScript projects for their portfolio
Anyone getting ready for React, Vue, or Node.js frameworks
Download LearnJS — the JavaScript compiler app that makes you actually write code.
Start your first lesson in under 60 seconds.
Latest Version
Varies with deviceRequires Android
Category
Education AppContent Rating
Everyone
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Flag as inappropriateLast updated on Jun 17, 2026
This release includes minor bug fixes and general improvements. Update to the latest version for the best experience.
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