How to make same button to increase count and revert back to its previous state in React (useState)?

Question

我想将计数更改为 1，并使相同的按钮在单击时恢复到以前的状态。

Answer 1

export const CountButton = () => {
  previousState = 100;
  const [count, setCount] = useState(false);
  return(
   <div>
     <button onClick={() => setCount(!count)}>Click Me!</button>
     <div>{count ? previousState + 1 : previousState }</div>
   </div>
  )
}

This code will increase the vote by one and then revert on the second click.