gistfile1.txt

class Shop extends React.Component {
  constructor(props) {
    super(props);

    this.state = {
      data: []
    };
  }

  componentDidMount() {
    fetch('/shop/getData')
      .then(response => response.json())
      .then(data =>{
        this.setState({ data });
        console.log(data);
      });
  }

  render() {
    return (
  <ul>
    {this.state.data.map(function(listValue){
      return <li key={listValue + 'key'}>{listValue}</li>;
    })}
  </ul>
)

  }
}

ReactDOM.render(<Shop />, document.getElementById('shop'))