Middleware
# Express
Express is a routing and middleware web framework that has minimal functionality of its own: An Express application is essentially a series of middleware function calls.
MiddlewareĀ functions are functions that have access to theĀ
request objectĀ (req), theĀ
response objectĀ (res), and the next middleware function in the applicationās request-response cycle. The next middleware function is commonly denoted by a variable namedĀ next.