greeting.html

<!DOCTYPE html>
<html>
  <head>
    <title>My First React App</title>
  </head>

  <body>
    <div id="app"></div>
    <!-- the 1st 2 scripts render React into a DOM, and the 3rd enables JSX and ES6-->
    <script src="https://cdnjs.cloudflare.com/ajax/libs/react/16.1.0/umd/react.development.js"></script>
    <script src="https://cdnjs.cloudflare.com/ajax/libs/react-dom/16.1.0/umd/react-dom.development.js"></script>
    <script src="https://cdnjs.cloudflare.com/ajax/libs/babel-core/5.8.34/browser.min.js"></script>
    <!--enables ES6 to ES5-->
    <script type="text/babel">
      class Greeting extends React.Component {
        render() {
          return (
            <div>
              <h1>Hello {this.props.name}!</h1>
            </div>
          );
        }
      }

      ReactDOM.render (
        <Greeting name="Bloc Student" />, document.getElementById('app')
      );
    </script>