Every web developer at some point faces a CORS problem while developing a website. CORS is described in MDN documentation as:

“Cross-Origin Resource Sharing (CORS) is an HTTP-header based mechanism that allows a server to indicate any other origins (domain, scheme, or port) than its own from which a browser should permit loading of resources. CORS also relies on a mechanism by which browsers make a “preflight” request to the server hosting the cross-origin resource, in order to check that the server will permit the actual request. In that preflight, the browser sends headers that indicate the HTTP method and headers that will be used in the actual request.”

CORS aka. Cross Origin Resource Sharing is a mechanism that means website from one URL to request data from another URL, and it frustrates for both front-end and backend because it dooms to figure out.

#programming #cors #javascript #nodejs