What is CORS in Web Development
What is CORS (Cross-Origin Resource Sharing) If you’ve ever worked with APIs in the browser, you probably saw this error: Access to fetch at ‘https://api.example.com/data from origin ‘http://localhost:3000 has been blocked by CORS policy This happens because of CORS — Cross-Origin Resource Sharing. Why CORS Exists Browsers follow the same-origin policy for security. It means that scripts loaded from one origin (domain, protocol, port) cannot freely access resources from another. Otherwise, any website could secretly read your banking data if you’re logged in. ...