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Node.js Tutorial

Node.js is a JavaScript runtime environment that allows you to run JavaScript outside the browser and build scalable server-side applications.

This tutorial covers all major Node.js concepts from beginner to advanced level.

Introduction to Node.js

  • What is Node.js?
  • History of Node.js
  • Features of Node.js
  • Node.js vs Other Backend Technologies

Setting Up Node.js

  • Installing Node.js
  • Using Node REPL
  • Running JavaScript with Node
  • Project Setup

Node.js Basics

  • Node.js Architecture
  • Event Loop
  • Blocking vs Non-Blocking Code
  • Global Objects

Modules in Node.js

  • Core Modules (fs, http, path)
  • Creating Custom Modules
  • Module Exports
  • Require vs Import

Node Package Manager (NPM)

  • Installing Packages
  • package.json
  • Dependencies and DevDependencies
  • NPM Scripts

File System (fs Module)

  • Reading Files
  • Writing Files
  • Working with Streams
  • File Operations

Events and EventEmitter

  • Event-Driven Architecture
  • EventEmitter Class
  • Custom Events

HTTP Module

  • Creating HTTP Server
  • Handling Requests and Responses
  • Routing Basics

Express.js Framework

  • Introduction to Express
  • Routing in Express
  • Middleware
  • Building REST APIs

Building APIs

  • REST API Concepts
  • CRUD Operations
  • Handling JSON
  • Error Handling

Working with Databases

  • MongoDB with Node.js
  • MySQL Integration
  • Mongoose ODM
  • Database Operations

Authentication and Authorization

  • JWT Authentication
  • Session Management
  • Password Hashing
  • Role-Based Access Control

Middleware

  • Types of Middleware
  • Custom Middleware
  • Error Handling Middleware
  • Third-party Middleware

Asynchronous Programming

  • Callbacks
  • Promises
  • Async/Await
  • Handling Async Errors

Streams and Buffers

  • Readable and Writable Streams
  • Duplex Streams
  • Buffers
  • Piping Streams

Security in Node.js

  • Input Validation
  • Preventing XSS and CSRF
  • Helmet.js
  • Rate Limiting

Testing Node.js Applications

  • Unit Testing
  • Integration Testing
  • Jest and Mocha
  • API Testing

Deployment

  • Deploying on Cloud (AWS, Vercel)
  • Environment Variables
  • Process Managers (PM2)
  • CI/CD Basics

Advanced Topics in Node.js

  • Cluster Module
  • Worker Threads
  • Microservices Architecture
  • WebSockets

Projects with Node.js

  • REST API Project
  • Authentication System
  • Real-time Chat App
  • E-commerce Backend

Best Practices in Node.js

  • Code Structure
  • Error Handling
  • Security Best Practices
  • Performance Optimization
  • Scalable Architecture