class App extends React.Component {

  
  render() {
    let enters = "All\nI\nwant\nis\nenter";
    return (
      <div>
        {enters}
        <br/>
        {enters.replace(/\n/g, '<br/>')}
      </div>
    );
  }
};

ReactDOM.render(
  <App></App>,
  document.getElementById("root")
);