Resolving CORS Issues in API Configuration

Cross-Origin Resource Sharing (CORS) errors are a common frustration when developing web applications that consume APIs. These issues arise due to browser security policies and require proper server-side configuration to resolve.

Understanding CORS Errors

A typical CORS error looks like:

Access to fetch at 'https://api.example.com' from origin 'https://your-app.com' has been blocked by CORS policy: No 'Access-Control-Allow-Origin' header is present on the requested resource.

Server-Side Solutions

1. Proper CORS Headers Configuration

For Node.js