15dkatz / beat-cors-server

Code for the "3 Ways to Fix the CORS Error — and How the Access-Control-Allow-Origin Header Works" article

Beat Cors Server

This project is an example of how to set up a proxy server to help frontends running in the browser beat the same origin policy.

The idea is to use express middleware to apply res.header('Access-Control-Allow-Origin', '*'); around requests to another server, with a more strict CORS setting.

That way, a server-to-server request could be completed, where the browser's same-origin policy would block it.

See the original article for a full walkthrough: https://medium.com/@dtkatz/3-ways-to-fix-the-cors-error-and-how-access-control-allow-origin-works-d97d55946d9z

Run the server

npm i
npm run start

Then visit localhost:3000/jokes/random.

Enjoy!

beat-cors-server's Issues

how to implement https://mybeat-cors-server ?

instead of http://localhost:3000

Best regards

Is it available for iframe

Can I setup this server such that it add the same header to iframe?