React-State

Question 1

What are hooks in React?

Answer 1

Hooks are special functions that are only available while React is rendering. They let you “hook into” different React features

Question 2

What are the “Rules of Hooks”? (if necessary, re-read the “Pitfall” box in State)

Answer 2

Hooks can only be called at the top level of your component or your own Hooks. Cannot be called within conditions, loops or other nested functions

Question 3

What is the purpose of state in React?

Answer 3

state allows React to remember information between renders

Question 4

Why can’t we just maintain state in a local variable?

Answer 4

local variables don’t persist between renders and changes to a local variable wont trigger renders

Question 5

What two actions happen when you call a state setter function?

Answer 5

it can update the state variable and trigger React to render the component again

Question 6

When does the local state variable get updated with the new value?

Answer 6

whenever useState is called