🌟 Node.js Learning Repository

A hands‑on collection of notes and code samples created while learning and mastering Node.js fundamentals.
Each folder demonstrates a specific concept, with concise examples written in VS Code and executed to understand Node.js from the ground up.

🎯 Purpose

This repository serves as a personal learning journal and a quick‑reference guide for anyone exploring core Node.js features before moving on to frameworks like Express.js or NestJS.

📚 Source of Learning

I followed the free video course: The Complete Node.js Bootcamp: From Beginner to Expert — Unlocking the Power of Server-Side JS
🔗 Watch on YouTube

🗂️ Repository Structure & Key Topics

• 0 – What and Why Node
  Introduction to Node.js, the V8 engine, and how Node ties JavaScript with C++.

• 1 – Modules Wrapper
  Understanding how Node.js wraps code inside functions to provide scope.

• 2 – Modules
  CommonJS module system: require, module.exports, and sharing functionality.

• 3 – ES6 Modules
  Using modern import / export syntax for modular code.

• 4 – Path Modules
  Working with file and directory paths in Node.js.

• 5 – FS Module
  File system operations in three styles:

  • 5.1 – Promise API: Async file operations using Promises and async/await.
  • 5.2 – Callback API: Classic callback‑based file operations.
  • 5.3 – Sync API: Synchronous (blocking) file operations.

• 6 – OS Module
  Accessing system details like CPU info, memory usage, and hostnames.

• 7 – URL Module
  Parsing and formatting URLs, handling query parameters.

• 8‑10 – HTTP Routing & Page Management
  Building basic servers, creating routes, and serving static pages.

• 11 – Events
  Understanding the EventEmitter pattern and creating custom events.

• 12 – Streams
  Efficiently reading and writing large files with Node.js streams.

📂 Project Layout

saadnadeem07-nodejs/
├── README.md
├── 0- What and Why Node/
│   ├── README.md
│   └── index.js
├── 1- Modules Wrapper/
│   └── index.js
├── 2- Modules/
│   ├── greet.js
│   ├── index.js
│   └── persons.js
├── 3- ES6 Modules/
│   ├── greet.js
│   ├── index.js
│   └── persons.js
├── 4- Path Modules/
│   └── index.js
├── 5- FS Module/
│   ├── README.md
│   ├── 5.1- Promise API/
│   │   ├── directories.js
│   │   └── files.js
│   ├── 5.2- Callback API/
│   │   ├── directories.js
│   │   └── files.js
│   └── 5.3- Sync API/
│       ├── directories.js
│       └── files.js
├── 6- OS Module/
│   └── index.js
├── 7- URL Module/
│   └── index.js
├── 8-10 HTTP Routing Page Management/
│   ├── README.md
│   ├── index.js
│   └── public/
│       ├── about.html
│       └── index.html
├── 11- Events/
│   └── index.js
└── 12- Streams/
    └── index.js

🚀 How to Use

1. Clone this repository

   git clone https://github.com/saadnadeem07/saadnadeem07-nodejs.git
   cd saadnadeem07-nodejs

2. Run any example
   Open the desired folder and execute:

   node index.js

3. Experiment & Modify
   Change the code, add new examples, and deepen your understanding of Node.js internals.

✨ Takeaways

By systematically working through these modules you will:

• Gain a solid grasp of Node.js core modules and architecture.
• Understand asynchronous patterns (callbacks, promises, streams).
• Build a strong foundation for advanced backend development.

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This repository is both a personal study log and a ready reference for anyone starting their Node.js journey.