how to set a particular parameter in state reactjs code example

Example 1: reading state react

<button onClick={() => this.setState({ count: this.state.count + 1 })}>
    Click me
  </button>

Example 2: reading state react

<p>You clicked {count} times</p>

Example 3: reading state react

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