Middleware

Middleware functions are functions that have access to the request object (req), the response object (res), and the next function in the application’s request-response cycle. The next function is a function in the Express router which, when invoked, executes the middleware succeeding the current middleware.

Middleware functions can perform the following tasks:

⚫ Execute any code.

⚫ Make changes to the request and the response objects.

⚫ End the request-response cycle.

⚫ Call the next middleware in the stack.