Typically all middlewares in nodejs/expressjs have access to request, response and next objects . A request is something that’s coming from a browser that invokes a particular function to perform certain tasks and return a response. “A particular function” in this case is a middleware.

Typically all middlewares in nodejs/expressjs have access to request, response and next objects . A request is something that’s coming from a browser that invokes a particular function to perform certain tasks and return a response. “A particular function” in this case is a middleware.