React Hello World Example with ES6+JSX

A basic Hello World widget with in browser JSX transformed + ES6 support

HTML

<script src="https://cdnjs.cloudflare.com/ajax/libs/react/0.13.1/JSXTransformer.js"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/react/0.13.1/react-with-addons.js"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/moment.js/2.18.1/moment.js"></script>
<script src="https://facebook.github.io/react/js/jsfiddle-integration.js"></script>
<div id="container">
    <!-- This element's contents will be replaced with your component. -->
</div>

CSS

.widget {
    width: 202px;
    margin:100px auto;
//    border:1px solid black;
    padding:20px;
}
.name {
    color: red;
}
.default-label {
    border: 1px solid black;
    padding: 10px;
    margin-bottom: 10px;
    width:180px;
}

.green-label {
    border: 1px solid green;
    padding: 10px;
    margin-bottom: 10px;
    width: 180px;
}

.default-input {
    border: 1px solid #eaeaea;
    padding: 10px;
    width:180px;
}

.important-input {
    border: 2px solid red;
    width:180px;
}

img.center {
    width: 100px;
    height: 100px;
    display: block;
    margin: 15px auto;    
}

JavaScript 1.7

class SidebarContent extends React.Component {

    constructor(props) {
        super(props);
        this.state = {
            date: moment()
        };
    }

    componentWillUnmount() {
        clearInterval(this.timerID);
    }

    tick() {
        this.setState({date: moment()});
    }

    getTime() {
        return this.state.date.format('HH:mm:ss')
    }
    
    componentDidMount() {
        this.timerID = setInterval(() => this.tick(), 1000);
    }

    render() {

    return (
        <ul className="nav" ref={(c) => {this.nav = c; }}>
            <li className="today">
                <div className="clock" center="xs">
                    <div center="xs">
                        <span className="hours">{this.getTime()}</span>
                    </div>
                </div>
                <div className="date" center="xs">
                    <p className="today-is">
                    {this.state.date.format('ddd MMM DD YYYY')}</p>
                </div>
            </li>
        </ul>
      );
   }
}
      React.render(<SidebarContent />, document.getElementById('container'));