How to Solve CORS Issues in React/Next.js with XDomain

What is CORS?

CORS is a security feature implemented by web browsers to prevent unauthorized access to resources on a different origin (domain, protocol, or port). When a web application tries to access resources from a different origin, the browser blocks the request unless the server explicitly allows it by setting appropriate CORS headers.

Why XDomain?

XDomain is a JavaScript library designed to bypass CORS restrictions by using an iframe proxy. It allows cross-origin communication without relying on CORS headers. This makes it particularly useful for scenarios where you have no control over the server’s CORS configuration, such as when interacting with third-party APIs.

Install XDomain : npm install xdomain

In your React or Next.js component where you make cross-origin requests, import XDomain at the top of the file:

import 'xdomain';

Next, you need to configure XDomain to specify which domains you want to allow communication with. You can do this using the XD object provided by XDomain: XD.allow(‘*’);

Now you can make cross-origin requests as usual using tools like fetch or Axios. XDomain will handle the CORS bypass internally:

fetch('https://example.com/api/data')

 .then(response => response.json())

 .then(data => console.log(data))

 .catch(error => console.error('Error fetching data:', error));