gistfile1.txt

var Input = React.createClass({
	render() {
		<input onFocus={ this.props.changeClassFunc } />
	}

});


var OuterDiv = React.createClass({

	changeClass() {
		this.setState({ addClass: true });
	},

	render() {

		var classes;

		if (this.state.addClass) {
			classes = "added-css-class"
		}

		return (<div>
				<Input changeClassFunc={ this.changeClass.bind(this) } className={ classes } />
				</div>)
	}
});