sample.jsx

render() {
  
  let rows = this.state.board.map((rowContent, id) => (
    <Row
      id={id}
      rowContent={rowContent}
      onClick={this._handleClick.bind(this)}
    />
  ));
 
  let message = this._getMessage(this.state);
  
  return (
    <div>
    <button
      onClick={this._resetBoard.bind(this)}
      className=”reset”
    >
      RESET
    </button>
    <div className=”message”>
      {message}
    </div>
    <div className=”board”>
      {rows}
    </div>
  </div>
 );
}