Learn Node.js: Backend & API

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About this app

Learn Node.js from the basics to advanced backend development — and get interview-ready. This Node.js tutorial takes you from your first server to real, production-style projects, with clear explanations, real-world code examples, hands-on projects, quizzes and 450+ interview questions. Works 100% offline, no login needed.

Master Node.js and the tools that go with it: Express JS, NPM, MongoDB and MySQL, plus the JavaScript foundations that make you strong in Node.

🛠️ HANDS-ON PROJECTS — BUILD REAL APPS
Learn Node.js by building, step by step:
• Todo REST API — CRUD API from scratch with Express
• User Auth with JWT — registration, login & protected routes
• REST API + MySQL — connection pooling & prepared statements
• REST API + MongoDB — Mongoose schemas & validation
• Real-Time Chat Server — WebSockets with Socket.IO
• File Upload API — multipart uploads with Multer
• API Rate Limiter — build middleware from scratch

📚 COMPLETE NODE.JS COURSE
Chapter-wise lessons from basic to advanced:
• Node.js core: event loop, modules, async/await, callbacks, streams, buffers
• HTTP & HTTPS servers, REST APIs with JWT, sending mail
• Events & EventEmitter, process object, cluster, worker threads
• File system, path, OS, DNS, net, URL, query string, zlib
• Node.js security practices, coding standards, hashing algorithms
• NPM basics, V8 & libuv internals, REPL, console, readline

🚀 EXPRESS JS TUTORIAL
Routing, route parameters & handlers, static files, response methods, chainable and mountable routes — everything you need to build APIs.

🧠 QUIZ ARENA
450+ Node.js interview questions with answer explanations, organized topic-wise across Basic, Medium and Hard levels.

🎯 MOCK INTERVIEW & DAILY CHALLENGE
• Mock Interview — 30 questions in 30 minutes, mixed topics, just like the real thing
• Daily Challenge — 5 fresh questions every day to keep your streak alive
• Review Mistakes — retry the questions you got wrong until you master them
• Key Points cheat sheets for quick point-to-point revision before interviews

💻 CODE PLAYGROUND
Practice and run code right inside the app. Earn XP, level up, and track your learning with streaks.

✈️ 100% OFFLINE, PRIVACY FIRST
• No login, no sign-up, no account
• Read chapters, take quizzes and build projects without internet
• Dark mode for comfortable night reading

🎯 PERFECT FOR
• Beginners learning backend development for the first time
• JavaScript developers moving to Node.js
• Students and job-seekers preparing for Node.js interviews
• Anyone building REST APIs with Express, MongoDB or MySQL

Learn Node.js at your own pace and become interview-ready — one chapter, one project at a time.

What’s new

📖 Redesigned lessons: clear headings, highlighted code, Key Points first, adjustable text size
✍️ Lessons rewritten in plain English + new offline diagrams
🧠 440 new quiz questions, 5 levels per topic
🎯 Daily Challenge, Roadmap, Revision & Interview Study Planner
📊 Weekly progress chart & activity heatmap
🏆 Pro: topic certificates & shareable cheat sheets
📱 New: More apps (Python, Java, C++, DSA & more)