express

Question 1

What does express.static() return?

Answer 1

will return you a middleware function, and you tell it which directory to serve static files to

Question 2

What is the local __dirname variable in a Node.js module?

Answer 2

tells you the absolute path of the current module

Question 3

What does the join() method of Node’s path module do?

Answer 3

joins a specific filepath to another filepath into a string

Question 4

How do you add express to your package dependencies?

Answer 4

npm install express

Question 5

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

Answer 5

.listen()

Question 6

How do you mount a middleware with an Express application?

Answer 6

use method

app.use()

Question 7

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

Answer 7

request and response

Question 8

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

Answer 8

application/json

Question 9

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

Answer 9

parses incoming body requests

Question 10

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

Answer 10

tells the server how to respond