Hi! Good point on keeping their usages inside of useEffect.
Storing variables in useState will be fine most of the time, but if you're in a situation where you're concerned about unnecessary re-renders impacting performance, this can be a useful way of getting around that. A real use-case might be if you had some sort of isFetching or hasMounted boolean that you need to keep track of.
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Hi! Good point on keeping their usages inside of
useEffect.Storing variables in
useStatewill be fine most of the time, but if you're in a situation where you're concerned about unnecessary re-renders impacting performance, this can be a useful way of getting around that. A real use-case might be if you had some sort ofisFetchingorhasMountedboolean that you need to keep track of.