React v15 Starter

HTML

<script src="https://cdnjs.cloudflare.com/ajax/libs/react/15.0.1/react-with-addons.js"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/react/15.0.1/react-dom.js"></script>
<div id="container"></div>

Babel + JSX

var Hello = React.createClass({
  render: function() {
    return <div>Hello {undefined}</div>;
  }
});

ReactDOM.render(
  <Hello name="World" />,
  document.getElementById('container')
);