State Flashcards
(6 cards)
1
Q
What are hooks in React?
A
functions that let you “hook into” React state and lifecycle features from function components
2
Q
What are the “Rules of Hooks”? (if necessary, re-read the “Pitfall” box in State)
A
Hooks—functions starting with use—can only be called at the top level of your components
3
Q
What is the purpose of state in React?
A
o contain data or information about the component
4
Q
Why can’t we just maintain state in a local variable?
A
it will only exist within that block if it is declared
5
Q
What two actions happen when you call a state setter function?
A
it returns a function that it is using
6
Q
When does the local state variable get updated with the new value?
A
when the action is done or when the state is used
