var MyComponent = React.createClass(
{
    test: function () {

        this.setState({ editing: true });
    },
    render: function () {
            return (<div>Hello World</div>);
    }
}
);

var MyComponent = React.createClass(
{
    test: function () {

        this.setState({ editing: true });
    },
    render: function () {
        //return (<div>Hello World</div>);
    }
}
);