Search.js

const React = require('react');

const Search = React.createClass({

    getInitialState() {
        return {value: ''};
    },

    handleChange(event) {
        this.setState({value: event.target.value});
    },

    handleSubmit(event) {
        event.preventDefault();

        // When the form is submitted, call the onSearch callback that is passed to the component

        this.props.onSearch(this.state.value);

        // Unfocus the text input field
        this.getDOMNode().querySelector('input').blur();
    },

    render() {
        return (
            <form id="geocoding_form" className="form-horizontal" onSubmit={this.handleSubmit}>
                <div className="form-group">
                    <div className="col-xs-12 col-md-6 col-md-offset-3">
                        <div className="input-group">
                            <input type="text" className="form-control" id="address" placeholder="Find a location..."
                                   value={this.state.value} onChange={this.handleChange}/>
                            <span className="input-group-btn">
                <span className="glyphicon glyphicon-search" aria-hidden="true"></span>
              </span>
                        </div>
                    </div>
                </div>
            </form>
        );
    }
});

module.exports = Search;