[stickfigure]

I'm not quite sure what the point of this quiz is. I don't know the answer to those questions, and yet I seem to have no trouble building very large react applications (with hooks) anyway.

I would also struggle with similar quiz based on the callbacks for class components. And those I actually had to deal with on a frustratingly regular basis! At least with hooks I can remain blissfully ignorant of what happens under the covers of useEffect().

Maybe the answers don't matter and this is a pointless exercise.

[acemarke]

I'd definitely agree there's nuances about hook behavior that a lot of folks aren't familiar with. (Dan Abramov's mammoth post "A Complete Guide to `useEffect`" [0] ought to be required reading for all React devs, and a lot of the info in that post ought to be better integrated into the React docs directly.) That said:

- The "effect behavior runs bottom to top" has always been true about class lifecycle methods like `componentDidMount` / `componentDidUpdate`. So, nothing new there.

- Somewhat similarly, the aspect of new prop references causing some logic to run every time is not completely new, either - it's similar to how attempts to optimize rendering via use of `PureComponent`, `React.memo()`, and `shouldComponentUpdate` can "break" when the parent component passes down new callback or data object references every time.

- The complaint that "there's more stuff to learn" seems superfluous. If there was never anything new to learn, that would mean that the API was completely stagnant and that nothing new could ever be introduced. Yes, the ecosystem is in a somewhat uncomfortable transition state atm given that there's two different APIs that offer equivalent functionality, but "learning more stuff raises the barrier to entry" is not a particularly meaningful argument against hooks.

[0] https://overreacted.io/a-complete-guide-to-useeffect/

[ng12]

Agreed. At a certain point if experienced developers are struggling with the quiz it says a lot more about the quiz than the quiz-taker.