Prime Number Checker Frontend

This is a simple frontend application for checking if a number is prime. It connects to a backend service that provides authentication and prime number checking functionality.

Features

• User authentication (login/logout)
• Prime number checking
• Responsive design

How to Use

1. Register a user using the backend API (via Postman or similar tool)
2. Open the index.html file in a web browser
3. Log in with your registered username and password
4. Enter a number to check if it's prime
5. Logout when finished

API Endpoints

The application connects to the following endpoints:

• /auth/login - For user authentication
• /primes/{n} - For checking if a number is prime

Configuration

You can change the API endpoint in the script.js file by modifying the hosts object and the environment variable:

const hosts = {
  local: {
    primes_service: "http://localhost:4001",
  },
  remote: {
    primes_service: "https://primes-service.onrender.com",
  },
};

// Set to 'local' for local development, 'remote' for production
const environment = "local";

Technologies Used

• HTML5
• CSS3
• JavaScript (ES6+)