express Flashcards

1
Q

How do you add express to your package dependencies?

A

npm install express

automatically updates list of dependencies

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2
Q

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

A

.listen

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3
Q

How do you mount a middleware with an Express application?

A

.use( )

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4
Q

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

A

req & res

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5
Q

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

A

application/json

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6
Q

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

A

to specify intent of the function,

a label to state what it does

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7
Q

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

A

returns a middleware that parses json,

you need it for client requests with a json

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8
Q

What does express.static() return?

A

the static files requested

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9
Q

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

A

the path to the current file

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10
Q

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

A

combines all the string path arguments together and returns a file path

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