unmountComponentAtNode
unmountComponentAtNode removes a mounted React component from the DOM.
unmountComponentAtNode(domNode)Reference
unmountComponentAtNode(domNode)
Call unmountComponentAtNode to remove a mounted React component from the DOM and clean up its event handlers and state.
import { unmountComponentAtNode } from 'react-dom';
const domNode = document.getElementById('root');
render(<App />, domNode);
unmountComponentAtNode(domNode);Parameters
domNode: A DOM element. React will remove a mounted React component from this element.
Returns
unmountComponentAtNode returns true if a component was unmounted and false otherwise.
Usage
Call unmountComponentAtNode to remove a mounted React component from a browser DOM node and clean up its event handlers and state.
import {render, unmountComponentAtNode} from 'react-dom';
import App from './App.js';
const rootNode = document.getElementById('root');
render(<App />, rootNode);
// ...
unmountComponentAtNode(rootNode);Removing a React app from a DOM element
Occasionally, you may want to “sprinkle” React on an existing page, or a page that is not fully written in React. In those cases, you may need to “stop” the React app, by removing all of the UI, state, and listeners from the DOM node it was rendered to.
In this example, clicking “Render React App” will render a React app. Click “Unmount React App” to destroy it:
import './styles.css'; import {render, unmountComponentAtNode} from 'react-dom'; import App from './App.js'; const domNode = document.getElementById('root'); document.getElementById('render').addEventListener('click', () => { render(<App />, domNode); }); document.getElementById('unmount').addEventListener('click', () => { unmountComponentAtNode(domNode); });