What is CORS and how does it work in React?

What is CORS and how does it work in React?

CORS stands for Cross-Origin Resource Sharing. It's a security feature that allows or restricts resources requested from another domain. In React, when you make API calls to a different domain, CORS policies determine whether the request is allowed.

Why do I get CORS errors when making API requests?

CORS errors occur when the server you're trying to access doesn't allow requests from your React app's origin. This is a security measure to prevent unauthorized access.

How can I fix CORS issues in my React application?

You can fix CORS issues by configuring the server to include the appropriate CORS headers, or by using a proxy in your development environment.

What are some common CORS headers I should know about?

Common CORS headers include 'Access-Control-Allow-Origin', 'Access-Control-Allow-Methods', and 'Access-Control-Allow-Headers'. These headers control which origins can access the resources.