A modern authentication system featuring JWT tokens, secure cookie sessions, and real-time validation. Built with Go Fiber backend and Vanilla JavaScript frontend for maximum performance and simplicity.

• Go 1.19+ installed
• Node.js 16+ installed

# Navigate to backend directory
cd backend

# Install dependencies
go mod tidy

# Run the server
go run main.go

🎯 Backend runs on: http://localhost:8000

# Navigate to frontend directory
cd frontend

# Start the file server
node server.js

🎯 Frontend available at: http://localhost:3000

// Core Framework
github.com/gofiber/fiber/v2

// Database ORM
gorm.io/gorm
gorm.io/driver/sqlite

// JWT Handling
github.com/golang-jwt/jwt/v4

// Password Hashing
golang.org/x/crypto/bcrypt

• 🎨 Bootstrap 5 - Modern UI framework
• ⚡ Vanilla JavaScript - No framework overhead
• 🌐 Fetch API - Native HTTP requests

JWTAUTHAPI/
├── 📂 backend/
│   ├── 📄 main.go           # Server entry point
│   ├── 📄 models.go         # Database models
│   ├── 📄 handlers.go       # Route handlers
│   ├── 📄 middleware.go     # Auth middleware
│   └── 📄 go.mod           # Go dependencies
├── 📂 frontend/
│   ├── 📄 index.html       # Main HTML file
│   ├── 📄 script.js        # JavaScript logic
│   ├── 📄 style.css        # Custom styles
│   └── 📄 server.js        # Static file server
└── 📄 README.md

const response = await fetch('/api/register', {
  method: 'POST',
  headers: { 'Content-Type': 'application/json' },
  body: JSON.stringify({
    name: 'John Doe',
    email: '[email protected]',
    password: 'securePassword123'
  })
});

const userInfo = await fetch('/api/user', {
  credentials: 'include' // Include cookies
});

1. Fork the repository
2. Create a feature branch (git checkout -b feature/amazing-feature)
3. Commit your changes (git commit -m 'Add amazing feature')
4. Push to the branch (git push origin feature/amazing-feature)
5. Open a Pull Request

This project is licensed under the MIT License - see the LICENSE file for details.