FAQ: Middleware - next()

This community-built FAQ covers the “next()” exercise from the lesson “Middleware”.

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This exercise can be found in the following Codecademy content:

Web Development

Learn Express

FAQs on the exercise next()

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In case you wonder why we need next(), just like I did, be patient, because Lesson 7 will answer that.

1 Like

In this exercise, why is the

app.use((req, res, next) => {
  console.log("A sorcerer approaches!");

only run once? It is because of the next();? In the previous exercise it says that app.use(); calls are being run on each request, however, A sorcerer approaches it’s only printed once to the console. Thank you :smiley:

I believe there’s only one request.

See that all routes are the same - GET and the same path ‘/magic/:spellname’, so instead of stopping after matching the first correct route, by invoking next we make it look for the next possibly correct route .

At least that’s how I interpreted it.
Hope it helped! :slight_smile: