TheBrahminCoder - Getting CORS error in express JS

 A CORS error occurs when a browser prevents a request from being made to a resource from a different origin. This is a security measure to prevent cross-site scripting attacks.

To fix a CORS error in Express, you need to enable CORS on your server. This can be done by installing the cors middleware and configuring it to allow requests from the origin of your client application.

Here is an example of how to enable CORS in Express:

Code snippet

const express = require('express');
const cors = require('cors');

const app = express();

app.use(cors({
  origin: '*',
  allowedHeaders: ['Content-Type', 'Authorization'],
  allowedMethods: ['GET', 'POST', 'PUT', 'DELETE'],
}));

app.listen(3000);

In this example, we are allowing requests from any origin, but you can also specify specific origins if you want. You can also specify which headers and methods are allowed.

Once you have enabled CORS, you should no longer see any CORS errors.

Here are some additional resources that you may find helpful:

• Express cors middleware: https://expressjs.com/en/resources/middleware/cors.html
• What is CORS?: https://developer.mozilla.org/en-US/docs/Web/HTTP/CORS