JSFiddle - React, Tailwind, and code Playground

HTML

<script src="http://fb.me/react-js-fiddle-integration.js"></script>
<script src="//cdnjs.cloudflare.com/ajax/libs/react/0.4.1/react.js"></script>
<script src="//cdnjs.cloudflare.com/ajax/libs/react/0.4.1/JSXTransformer.js"></script>

JavaScript 1.7

/** @jsx React.DOM */

var C = React.createClass({
    getInitialState: function() {
        return {visible: false};
    },
    componentDidMount: function() {
        var component = this;
        setTimeout(function() {
            component.setState({visible: true});
        }, 1000);
    },
    render: function() {
        return <svg width={100} height={100}>
            {this.state.visible && <circle cx={50} cy={50} r={40} />}
        </svg>;
    }
});

React.renderComponent(<C />, document.body);