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JavaScript Build a REST API With Express Building API Routes in Express Error Handling in Express

Posted by haozhuohuang
haozhuohuang
2,590 Points

calling next()

I am wondering why in app.use("/questions", routes); we do not have to call next().... Thanks!

Steve Gardner
Steve Gardner
17,786 Points
Steve Gardner
Steve Gardner
17,786 Points

This method is simply sending the request to our routing file. You can call next() from within the routes for many different reasons such as setting params, using multiple callbacks, or error handling.

1 Answer

Donnie Reese
Donnie Reese
17,211 Points
Donnie Reese
Donnie Reese
17,211 Points

To my understanding, when you call 'routes', it's calling all of the routes.js page, with all of it's routes, under the "/questions" path.

Also, those are not the same as separate middleware instances. They are all routes, waiting to be called, not all being called sequentially as middleware calls would be. I believe.

I hope that helps.