Fullstack Practice 🚀

This repository is a collection of my JavaScript practice exercises and a full Express.js + MongoDB project.

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⚙️ Features

🔹 JavaScript Practice

• String functions: Reverse, Palindrome, Vowel Count, Capitalize
• Array operations: Filter, Map
• ES6 Functions: Arrow Functions

🔹 Express + MongoDB Practice

• 🌐 RESTful APIs using Express
• 🔑 Middleware (Logger & Authentication)
• 🗄️ MongoDB Atlas database connection
• 📡 API Endpoints with CRUD operations
• ✅ Tested with Postman

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📚 What I Learned

🔹 JavaScript Basics & Practice

• Wrote functions for:
  • Reverse String
  • Palindrome Check
  • Vowel Count
  • Longest Word in a String
  • Capitalize Words
• Practiced Array Operations like:
  • map()
  • filter()
• Used ES6 Arrow Functions to simplify code.

🔹 Express.js & Middleware

• Built a Node.js + Express.js server.
• Created routes for GET, POST, and DELETE.
• Added a Logger Middleware to track requests with timestamps.
• Learned to use Controllers for cleaner code separation.
• Implemented Role-Based Access Control (RBAC):
  • Admin → can create, read, and delete users.
  • Member → can create and read users.
  • Guest → can only read.

🔹 MongoDB Atlas

• Connected MongoDB Atlas cloud database with Mongoose.
• Designed a User Schema with:
  • userName
  • userId
  • role (Admin / Member / Guest)
• Practiced CRUD operations with real data.

🔹 Postman API Testing

• Tested all routes with Postman:
  • GET /user/:name
  • POST /user
  • DELETE /user/:id (Admin only)
• Sent JSON data in POST requests:

  {
    "userName": "Mugilan",
    "userId": "001",
    "role": "Member"
  }
  

🔧 Installation & Setup

1. Clone the repository

   git clone https://github.com/Karmugilan-vk/fullstack-practice.git
   cd fullstack-practice/express-practice