JavaScript Guide — Learn JavaScript from Scratch
JavaScript Guide is your complete companion for mastering JavaScript. Designed for beginners and anyone wanting to build strong JavaScript skills, this app breaks down complex concepts into bite-sized, practical lessons you can complete at your own pace.
Learn the essential JavaScript skills that power modern web development. Build a rock-solid foundation that will serve you throughout your entire coding journey, whether you're building websites, web apps, or exploring frameworks like React, Vue, and Node.js.
What You'll Master
Variables and data types (let, const, strings, numbers, booleans)
Type conversion and comparisons (=== vs ==, truthy/falsy)
Control flow (if/else, switch, loops)
Functions (regular functions, arrow functions, parameters, scope)
Arrays and powerful array methods (map, filter, forEach, find)
Objects, methods, and working with this
Destructuring for cleaner code
JSON parsing and stringifying
Error handling (try/catch, common JavaScript errors)
Debugging strategies and best practices
Three Learning Modes
Guide — Step-by-Step Curriculum
Follow 30 carefully structured chapters that build from absolute basics to confident JavaScript fundamentals. Each chapter includes:
Clear explanations with real-world context
Live code examples you can learn from
Practical notes highlighting common pitfalls
Progressive difficulty that respects your learning curve
Quiz — Interactive Practice
Reinforce what you've learned with hands-on quizzes:
Diverse question formats to test your understanding
Instant feedback with detailed explanations
XP rewards and achievement badges to track your progress
Practice makes perfect — complete all chapters to master JavaScript
Reference — Quick Lookup
A curated, searchable reference covering:
Data types and operators
String and number methods
Array methods with examples
Object manipulation techniques
Common error types and solutions
JSON APIs
Perfect for quick refreshers while coding or studying.
Learn JavaScript the Right Way
JavaScript Guide teaches modern JavaScript (ES6+) best practices from day one:
Use let and const (not var)
Prefer === over ==
Master arrow functions
Understand scope properly
Write clean, readable code
Build skills with clean, modern JavaScript that follows current industry standards.
Who This Is For
Complete beginners starting their coding journey
Developers transitioning from other languages
Anyone preparing for JavaScript interviews
Students building essential programming skills
Self-learners wanting structured, clear JavaScript education
Track Your Progress
Complete 30 guided chapters
Earn XP for every quiz question answered
Unlock achievement badges for milestones
Bookmark important topics for quick review
See exactly where you are in your learning journey
Privacy First
No account required
No login or sign-in needed
No tracking or analytics
100% free — all content unlocked from day one
Works completely offline
Download JavaScript Guide and start learning coding today.