Node.js & Express
Checking access...
Node.js brings JavaScript to the server, enabling full stack development with a single language. Express is the most popular Node.js web framework — lightweight, flexible, and battle-tested at scale.
Module Pages
| Page | What You’ll Learn |
|---|---|
| Node.js Fundamentals | Runtime overview, require vs import, NPM, package.json, global objects, event loop basics |
| Express Server Setup | Installing Express, basic server, route handlers, req/res objects, environment variables |
| Routing & Parameters | Route methods, route parameters, query strings, modular routers, error handling routes |
| Middleware | What is middleware, built-in middleware (json, static, cors), custom middleware, error middleware |
| RESTful API Design | REST principles, CRUD endpoints, status codes, request validation, API versioning |
| File Handling & Uploads | fs module, reading/writing files, multer for uploads, file validation, serving static files |
| Error Handling & Logging | Centralised error handler, custom error classes, logging with Winston/Pino, uncaught exceptions |
| Environment & Configuration | .env files, dotenv, configuration patterns, environment-specific settings |
| Testing Node.js APIs | Jest setup, supertest for HTTP testing, mocking dependencies, test fixtures |
| Project: RESTful Task API | Build a complete REST API for a task manager with full CRUD, validation, error handling |
Key Takeaways
By the end of this module, you’ll be able to build and deploy RESTful APIs with Node.js and Express — handling routing, middleware, file uploads, error handling, and testing.