06-custom-component.html

<!DOCTYPE html>
<html lang="en">
  <head>
    <meta charset="UTF-8" />
    <meta http-equiv="X-UA-Compatible" content="IE=edge" />
    <meta name="viewport" content="width=device-width, initial-scale=1.0" />
    <title>06-custom-component</title>
  </head>
  <body>
    <div id="root"></div>

    <script src="https://unpkg.com/react@16.7.0/umd/react.production.min.js"></script>
    <script src="https://unpkg.com/react-dom@16.7.0/umd/react-dom.production.min.js"></script>
    <script src="https://unpkg.com/@babel/standalone/babel.min.js"></script>

    <script type="text/babel">
      const rootEl = document.getElementById("root");

      // Message Component
      const Message = (props) => <p className="info">{props.children}</p>;

      const contentEl = (
        <div className="container">
          <Message children="Hello World" />
          <Message>Goodbye World</Message>
        </div>
      );

      ReactDOM.render(contentEl, rootEl);
    </script>
  </body>
</html>