What is CORS and how can I handle CORS errors in my web application?

What is CORS and how can I handle CORS errors in my web application?

CORS stands for Cross-Origin Resource Sharing. It's a security feature that restricts web pages from making requests to a different domain than the one that served the web page. To handle CORS errors, you can configure your server to include the appropriate headers.

What headers do I need to set on my server?

You typically need to set the 'Access-Control-Allow-Origin' header to specify which domains are allowed to access your resources. You may also need to set 'Access-Control-Allow-Methods' and 'Access-Control-Allow-Headers'.

Can I allow all domains to access my API?

Yes, you can set 'Access-Control-Allow-Origin' to '*' to allow all domains. However, be cautious as this can expose your API to security risks.

What if I only want to allow specific methods?

You can specify allowed methods by setting the 'Access-Control-Allow-Methods' header to a comma-separated list of methods, like 'GET, POST, PUT'.