How do I fix CORS issues in my web application?

How do I fix CORS issues in my web application?

CORS, or Cross-Origin Resource Sharing, issues occur when your web app tries to access resources from a different origin. What specific error are you encountering?

I'm getting a 'No 'Access-Control-Allow-Origin' header is present on the requested resource' error.

This error means that the server you're trying to access isn't allowing your domain. You can fix this by adding the appropriate CORS headers on the server side. Are you able to modify the server code?

Yes, I can modify the server. What headers do I need to add?

You need to add the 'Access-Control-Allow-Origin' header. For example, to allow all origins, you can set it to '*'. If you want to restrict it to specific domains, list them instead.