Middlewares-and-Routers

Question 1

Question

Answer 1

Answers

Question 2

How do you use middleware?

Answer 2

app.use(middlewareName())

Question 3

How do you create middleware?

Answer 3

const middlewareName = (req, res, next) => { next()}

Question 4

How do you create a router?

Answer 4

const router = express.Router()

Question 5

How do you add HTTP methods to your router?

Answer 5

router.route(‘subURL’).method(controller).method(controller)

Question 6

How do you use a router?

Answer 6

app.use(‘URL’,router)

Question 7

What are param middlewares?

Answer 7

They are middlewares that run for a URL, only if a specific parameter exists

Question 8

How do you create a param middleware?

Answer 8

const middleware = (req, res, next, val) => {//val is the param value next()}

Question 9

How do you use the param middleware?

Answer 9

By assigning it to a router e.g. router.param(‘url’, middleware)

Question 10

How do you chain middlewares for a single route?

Answer 10

Router.method(middleware, middleware, middleware)