how we can define usesate in react code example

Example 1: update state in useState hook

// declare state using useState hook.
// someState is set to someInitialState
const [someState, setSomeState] = useState(someInitialState);

// setSomeState updates the current state 
setSomeState(someOtherState);

Example 2: usestate react

function Example(props) {
  // You can use Hooks here!
  return <div />;
}