express Flashcards
How do you add express to your package dependencies?
npm install express
automatically updates list of dependencies
What Express application method starts the server and binds it to a network PORT?
.listen
How do you mount a middleware with an Express application?
.use( )
Which objects does an Express application pass to your middleware to manage the request/response lifecycle of the server?
req & res
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?
to specify intent of the function,
a label to state what it does
What does the express.json() middleware do and when would you need it?
returns a middleware that parses json,
you need it for client requests with a json
What does express.static() return?
the static files requested
What is the local __dirname variable in a Node.js module?
the path to the current file
What does the join() method of Node’s path module do?
combines all the string path arguments together and returns a file path