React Base Fiddle (JSX)

Starting point for creating JSFiddles with React. This uses React with Addons.

HTML

<script src="https://cdnjs.cloudflare.com/ajax/libs/babel-core/5.8.24/browser.js"></script>
<script src="https://fb.me/react-with-addons-15.1.0.js"></script>
<script src="https://fb.me/react-dom-15.1.0.js"></script>
<script src="https://facebook.github.io/react/js/jsfiddle-integration-babel.js"></script>

<div id="container">
    <!-- This element's contents will be replaced with your component. -->
</div>

JavaScript 1.7

var StyleFromProps = React.createClass({
  render: function() {
    return (
    <svg height="100" width="100">
      <style type="text/css" dangerouslySetInnerHTML={{__html: `
        <![CDATA[
          circle {
            stroke: ${this.props.color};
            fill:   ${this.props.color};
          }
        ]]>
        `}}/>
        <circle cx="50" cy="50" r="40"/>
    </svg>
   );
  }
});

ReactDOM.render(
  <StyleFromProps color="green" />,
  document.getElementById('container')
);