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Node.js tutorial Backend JavaScript and REST APIs.

Node.js & Express — build REST APIs and backend services with JavaScript. Every lesson has complete code with the output you'll see when you run it, key points, a practice task, a quiz and interview questions.

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  • 7lessons
  • 7quick checks
  • 14interview Q&As
  • 7practice tasks

Syllabus

What you'll learn

Every lesson has a worked example, key points, a quick check, a practice task and interview questions.

  1. 01Node.js introductionWhat Node.js is, why companies use it, installing it and running your first script.
  2. 02Modules & npmSplitting code into modules with import/export, package.json and installing packages.
  3. 03Async code: callbacks, promises & async/awaitHow Node handles slow work, the event loop, and writing clean async code with async/await.
  4. 04Files, paths & the HTTP moduleReading and writing files with fs/promises, building paths safely and a basic HTTP server.
  5. 05Express: routes & middlewareCreating an Express app, route parameters, query strings, JSON bodies and middleware.
  6. 06Build a REST API (CRUD)Create, read, update and delete with Express routers, validation and correct status codes.
  7. 07Databases, errors & JWT authConnecting to a database, central error handling, environment secrets and protecting routes with JWT.