What is CORS and how does it work in different frameworks?

What is CORS and why is it important?

CORS stands for Cross-Origin Resource Sharing. It's a security feature that allows or restricts resources requested from another domain.

How does CORS work in Express.js?

In Express.js, you can enable CORS by using the 'cors' middleware. Just install it and use it in your app.

What about CORS in Django?

In Django, you can handle CORS by using the 'django-cors-headers' package, which allows you to specify allowed origins.

Are there any differences in how CORS is implemented in Angular?

Angular handles CORS through HTTP requests, but the server must still allow cross-origin requests by setting appropriate headers.