express intro

Question 1

How do you add express to your package dependencies?

Answer 1

npm install you simply install it on the terminal

Question 2

What Express application method starts the server and binds it to a network PORT?

Answer 2

listen() method

Question 3

How do you mount a middleware with an Express application?

Answer 3

you call the use() method on the app express application and pass it one argument and/optional a callback function expecting at least two parameters req and res and the optional of next

Question 4

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

Answer 4

the request object req, and the response object res,

Question 5

What is the appropriate Content-Type header for HTTP messages that contain JSON in their bodies?

Answer 5

application/json

Question 6

What is the significance of an HTTP request’s method?

Answer 6

it indicates the desires action to be performed for a given resource

Question 7

What does the express.json() middleware do and when would you need it?

Answer 7

it parses a raw jason string body into an object??????????????//