Express Hello World

Question 1

What is Express middleware?

Answer 1

are functions that have access to the request object (req), the response object (res), and the next middleware function in the application’s request-response cycle. The next middleware function is commonly denoted by a variable named next.

Question 2

What is Express middleware useful for?

Answer 2

Execute any code.
Make changes to the request and the response objects.
End the request-response cycle.
Call the next middleware function in the stack.

Question 3

How do you mount a middleware with an Express application?

Answer 3

.use method

Question 4

Which objects does an Express application pass to your middleware to manage the request/response lifecycle of the server?

Answer 4

req, res, next objects