Skip to content
Related Articles

Related Articles

ReactJS unmountComponentAtNode() Method

View Discussion
Improve Article
Save Article
  • Last Updated : 26 May, 2021

React.js library is all about splitting the app into several components. Each Component has its own lifecycle. React provides us some in-built methods that we can override at particular stages in the life-cycle of the component.

In class-based components, the unmountComponentAtNode() method Remove a mounted React component from the DOM.

Creating React Application:

  • Step 1: Create a React application using the following command.

    npx create-react-app foldername
  • Step 2: After creating your project folder i.e. foldername, move to it using the following command.

    cd foldername

Project Structure: It will look like the following.

Example: Now write down the following code in the App.js file. Here, App is our default component where we have written our code.


import React from 'react'
import ReactDOM from 'react-dom';
// Exporting your App Component
export default function App() {
  // Function to unmount root component
  function unm() {
  return (
      <div>Hi Geek, this is the rendered content</div>
      <button onClick={unm}>Unmount</button>

Step to Run Application: Run the application using the following command from the root directory of the project:

npm start

Output: Now open your browser and go to http://localhost:3000/, you will see the following output:


My Personal Notes arrow_drop_up
Recommended Articles
Page :

Start Your Coding Journey Now!