OTP Based Login & Register System using React.js + Node.js | Full Stack Authentication Tutorial 2025
Learn how to build a professional OTP verification system with React.js (frontend) and Node.js + Express (backend).
In this step-by-step tutorial, we’ll create a secure register and login functionality using OTP sent via email or SMS, complete with form validation, JWT authentication, and real-world project structure.
🔥 What you’ll learn:
✅ OTP generation and validation logic
✅ Node.js backend setup with Express
✅ React.js frontend integration
✅ JWT Authentication flow
✅ Handling session and token expiry