Chapter2_Topic1_Question7.html

<!DOCTYPE html>
<html>
  <head>
    <meta charset="UTF-8" />
    <title>Question 7</title>
    <script src="https://unpkg.com/react@16/umd/react.development.js"></script>
    <script src="https://unpkg.com/react-dom@16/umd/react-dom.development.js"></script>
    
    <!-- Don't use this in production: -->
    <script src="https://unpkg.com/@babel/standalone/babel.min.js"></script>
  </head>
  <body>
    <div id="root"></div>
    <script type="text/babel">
      class Confirm extends React.Component {
        render() {
          return <div>{message}</div>;
        }
      }; // single one js file

      const confirm = message => React.lazy(() => import('./Confirm')); // not real code
      class App extends React.Component {
        render() {
          return (
            <div>
              Hello World!
            </div>
          );
        }
        async componentDidMount() {
          let res = await confirm('Are you sure to delete?');
          if (res) {
            console.log('Yes');
          } else {
            console.log('No');
          }
        }
      }

      ReactDOM.render(
        <App />,
        document.getElementById('root')
      );

    </script>
  </body>
</html>