how to use localhost for react js code example

Example 1: set dynamic route in link react js

  /* Links */
  {heroes.map(hero => ()}

  /* Component */
  


class Hero extends Component {
  render() {
    return (
      

        {this.props.match.params.id}
      
    );
  }
}

Example 2: use javascript library in react

class MainView extends Component {
  render() {
    // don't render anything
    return 
;
  },

  componentDidMount() {
    // find the DOM node for this component
    const node = ReactDOM.findDOMNode(this);

    // widget does stuff
    $(node).activateMyCoolWidget();

    // start a new React render tree with widget node
    ReactDOM.render(
{this.props.children}
, node);
  }
});