event-handler-with-context.jsx

class MyComponent extends React.Component {
  
  constructor() {
    this.handleClick = this.handleClick.bind(this);
  }
  
  handleClick(e) {
    console.log('Parameter', this.props.param);
    console.log('Event', e);
  }
  
  render() {
    <button onClick={this.handleClick}></button>
  }
}