how to develop web IDE using javascript react angular monaco code example

Example 1: javascript redirect

window.location.href = "http://mywebsite.com/home.html";

Example 2: use javascript library in react

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

  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(<div>{this.props.children}</div>, node);
  }
});