ReactJS - remove parent node and clean up memory

What happens when you remove the Dom node that the ReactJs component shows up in a library like a request? Will React code (and virtual DOM) work in memory to know to clear itself?

React component

var Box = React.createClass({
    render: function() {
       return (
          <div>
             Hello, world! I am a Box.
          </div>
       );
    }
});

React.render(<Box/>, document.getElementById('content'));

      

        
        
        
      

    

and then use Jquery later with

$("#content").remove();

      

        
        
        
      

    

I found this feature, however the React component is a third party component and React is bundled, so I don't have access to it.

React.unmountComponentAtNode(document.getElementById('content'));