Login and Registration using MERN Stack | MongoDB, Express.js, React, Node.js

In this tutorial, we’ll build a fully functional Login and Registration system using the MERN stack (MongoDB, Express.js, React, Node.js). We'll implement JWT-based authentication, test our API endpoints in Postman, and display user-specific data like username and email on the homepage after login. This is a practical full-stack auth project ideal for beginners and intermediates alike. ✨ What You'll Learn: How to set up a structured MERN authentication project. How to create and test secure RESTful APIs with Express and MongoDB. How to implement JWT authentication and protect routes. How to store and access tokens on the frontend. How to use Axios to connect React with the backend. How to conditionally render components based on user authentication. How to use React Router DOM for navigation. How to test your API endpoints with Postman. 🚀 Key Features: User registration and login with JWT authentication. Password hashing for secure user storage. Protected route to fetch user profile data (/me). Display logged-in user's username and email on homepage. Client-side routing using React Router DOM. Token persistence using localStorage. Postman-tested backend endpoints. Clean and minimal UI ready to expand. 🔗 Useful Links: MongoDB – https://www.mongodb.com/ – NoSQL database Express.js – https://expressjs.com/ – Web framework for Node.js React – https://reactjs.org/ – JavaScript library for building UIs Node.js – https://nodejs.org/ – JavaScript runtime Postman – https://www.postman.com/ – API testing tool JWT (JSON Web Token) - https://jwt.io/ – Secure token standard for user authentication ⏱️ Timestamps: 00:00:00 - Project Preview  00:00:55 - Setting Up the Backend 00:06:29 - Connecting to MongoDB 00:12:21 - Creating User Model & Password Hashing 00:20:24 - Creating Routes 00:31:14 - Adding Middleware 00:44:29 - Testing API endpoints with Postman 00:48:57 - Setting Up the Frontend 00:52:41 - Working with App component 00:58:06 - Working with Login Page 01:13:21 - Working with Register Page 01:15:16 - Working with Home Page 01:20:40 - Working with Navbar component 01:30:37 - Protecting Routes 01:35:40 - Final Words & Project Recap 🔔 Subscribe for More Projects If you enjoyed this tutorial, like, comment, and subscribe for more MERN stack projects and full-stack development walkthroughs. Got ideas or feedback? Drop them in the comments! 📁 Source Code: Get the full project on GitHub: [https://github.com/WebDevBey/mern-log...] ☕ Buy Me a Coffee: https://ko-fi.com/webdevbey Contact Me: [email protected]