Express Flashcards
How do you add express to your package dependencies?
npm install express
What Express application method starts the server and binds it to a network PORT?
listen method
How do you mount a middleware with an Express application?
use method
Which objects does an Express application pass to your middleware to manage the request/response lifecycle of the server?
request, response
What is the appropriate Content-Type header for HTTP messages that contain JSON in their bodies?
application/json
What is the significance of an HTTP request’s method?
The app object corresponds to the HTTP methods.
What does the express.json() middleware do and when would you need it?
Parses JSON request bodies.
When client sends JSON body.
What does express.static() return?
a function
What is the local __dirname variable in a Node.js module?
The directory path of the current module starting from the root
