express

Question 1

How do you add express to your package dependencies?

Answer 1

npm install express

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

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

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 is an action to be performed on a resource identified by a given Request-URL.

Question 7

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

Answer 7

It parses incoming requests with JSON payloads and is based on body-parser.