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Node.js Tutorials

Node.js is a JavaScript runtime built on Chrome's V8 engine that lets you run JavaScript outside the browser, powering APIs, real-time apps, command-line tools, and backend services. This complete Node.js course covers the runtime and module system, core built-in modules, asynchronous programming and the event loop, streams and events, building HTTP servers and REST APIs with Express, connecting to MongoDB, MySQL, and PostgreSQL, authentication, security, testing, performance, and production deployment.

What is Node.js?

Node.js is a JavaScript runtime built on Google's V8 engine, created by Ryan Dahl in 2009 to make non-blocking, event-driven I/O practical for building fast, scalable network applications. It pairs V8 with libuv, a library that provides the event loop and asynchronous I/O, letting a single Node.js process handle thousands of concurrent connections efficiently.

Why Learn Node.js?

Node.js remains one of the most widely used backend runtimes because it lets developers use JavaScript across the entire stack, from the browser to the server, while offering excellent performance for I/O-heavy workloads like APIs, real-time apps, and microservices. Its npm ecosystem is the largest package registry in the world, and frameworks like Express make building production-ready servers fast and approachable.

What You Will Learn in This Node.js Course

This course is organized into focused lessons so you can learn step by step. You will start with the runtime and module system, then move into core built-in modules (file system, path, OS, HTTP, crypto), asynchronous programming and the event loop, events and streams, building servers and REST APIs with Express, connecting to MongoDB, MySQL, and PostgreSQL, authentication with JWT, sessions, and OAuth, securing apps with Helmet, CORS, and rate limiting, testing and debugging, and advanced topics like worker threads, clustering, and deployment, finishing with interview preparation material.

Complete Node.js Roadmap

Follow this structured Node.js roadmap to learn every important topic with examples, cheatsheets, and practical usage guidance.

01

Basics

Node.js Article Series • 5 lessons

Covers Node.js - Introduction, Node.js - Basics, and 3 more lessons.

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02

Core Concepts

Node.js Article Series • 5 lessons

Covers Node.js Modules, CommonJS Modules, and 3 more lessons.

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03

Built-in Modules

Node.js Article Series • 5 lessons

Covers File System Module, Path Module, and 3 more lessons.

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04

Async Node.js

Node.js Article Series • 5 lessons

Covers Asynchronous Node.js, Node.js Callbacks, and 3 more lessons.

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05

Events and Streams

Node.js Article Series • 5 lessons

Covers Node.js Events, EventEmitter, and 3 more lessons.

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06

Web Server

Node.js Article Series • 5 lessons

Covers Node.js HTTP Server, Server Routing, and 3 more lessons.

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07

Express.js

Node.js Article Series • 5 lessons

Covers Express.js, Express Routing, and 3 more lessons.

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08

REST APIs

Node.js Article Series • 5 lessons

Covers Node.js REST API, CRUD API, and 3 more lessons.

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09

Databases

Node.js Article Series • 5 lessons

Covers Node.js Databases, MongoDB with Node.js, and 3 more lessons.

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10

Authentication

Node.js Article Series • 5 lessons

Covers Node.js Authentication, JWT Authentication, and 3 more lessons.

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11

Security

Node.js Article Series • 5 lessons

Covers Node.js Security, CORS, and 3 more lessons.

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12

Testing and Debugging

Node.js Article Series • 5 lessons

Covers Node.js Testing, Unit Testing, and 3 more lessons.

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13

Advanced

Node.js Article Series • 5 lessons

Covers Node.js Performance, Worker Threads, and 3 more lessons.

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14

Reference

Node.js Article Series • 5 lessons

Covers Node.js Best Practices, Node.js Do's and Don'ts, and 3 more lessons.

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15

Interview

Node.js Article Series • 2 lessons

Covers Node.js Interview Questions, Node.js Quiz.

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Who Can Use This Node.js Tutorial?

This tutorial is useful for beginner backend developers, frontend developers expanding into full-stack JavaScript, students learning server-side programming, and interview candidates who want clear explanations paired with practical, real-world examples.

Start Learning Node.js

Begin with the introduction lesson and continue through the sidebar in order. Each section is designed to help you understand Node.js clearly and apply it confidently in real backend projects.