React useState() Hook Quiz
Which of the following activities do we perform while declaring useState in react?
UseState() return an array containing two elements first state and second a function to alter that state, and through Array destructing we directly associate them with two variable.
Which type of variable can we define in the useState hook?
UseState allows us to define all kinds of datatype.
Can we use useState hook inside conditional statement such as: if or while?
Because react keeps the count of useState calls and expects the same number of calls each time.
How react remembers which state variable belongs to which useState call?
This is how react knows which state belongs to which call.
How many calls we can make for useState or useEffect in a single component?
React does not restrict the number of calls.
Can we use useState and useEffect hooks simultaneously in a component?
React allows us, to use both hooks simultaneously in a component.
What does useState() return in React?
UseState() return an array, containing state and a function which is then destructed using Array destructing and associate with two variable.
What is passed as an argument in useState() in React?
Argument in useState() is the initial value we want to assign to the state.
Which datatype can be passed as an argument in useState() in React?
UseState() can take any datatype defined in React.
How many possible arguments useState() can take?
UseState() can take only one argument which is the initial value of the state.