global-react/index.html

<!doctype html>
<html>
  <head>
    <title>unpkg-demos :: global-react</title>
  </head>
  <body>
    <div id="app"></div>

    <script src="https://unpkg.com/react@16.0.0-beta.2/umd/react.production.min.js"
      integrity="sha384-lJJbYsDe7wDuOttI/MIHfj68o3fVZOhJDxEn0cTPbDq5mkzjF1p+AFEp3r/HpUnt"
      crossorigin="anonymous"></script>
    <script src="https://unpkg.com/react-dom@16.0.0-beta.2/umd/react-dom.production.min.js"
      integrity="sha384-urrH8a5NtX87DSmFO4pKPICl5RHszNM6yx75JIYhynT2ukWDK4skf0YAh4EDEdD2"
      crossorigin="anonymous"></script>
    <script src="https://unpkg.com/babel-standalone@6.24.2/babel.min.js"
      charset="utf-8"></script>

    <script type="text/babel">
      class MyApp extends React.Component {
        render() {
          return <h1>Hello from React {React.version}</h1>
        }
      }

      ReactDOM.render(
        <MyApp/>,
        document.getElementById('app')
      )
    </script>
  </body>
</html>