react-06.jsx

// MyComponent.jsx

export class MyComponent extends Component {
  
  constructor(props) {
    super(props);
    this.state = {counter: 0};
    this.onButtonClick = this.onButtonClick.bind(this);
  }
  
  render() {
    return (
      <div className="my-div">
        My div content
        <MyButton onButtonClick={this.onButtonClick} buttonTitle={"Clicked times: " + this.state.counter} />
      </div>
    );
  }
  
  onButtonClick() {
    this.setState({
      counter: this.state.counter + 1
    });
  }
}