How to Enable CORS
To enable CORS we will be using the cors npm package in our node express application. This cors package provides pre-defined methods for configuration and other setup options to use cors in the application.
How to Deal with CORS Error in Express Node.js Project ?
CORS, also known as Cross-Origin Resource Sharing, should be enabled if you want to make a request between your client and server when they are on different URLs.
Let us consider client to be on http://localhost:5500 and the server on http://localhost:5000. Now if you try to make a request from your client to the server you will get the error stating that blocked by the CORS policy.