Why is same origin policy kicking in when making request from localhost to localhost?

Question

I\'m keeping the backend API as a separate project from the frontend HTML5 app consuming it. I\'m using Yeoman for the frontend development. Yeoman runs on localhost:3501 an

Answer 1

The ports also count for cross domain requests, therefore http://localhost:3000 and http://localhost:3501 are 2 different domains (from browser's point of view).

If you need both applications (client and backend) to run on different ports, consider using http://enable-cors.org/