ReactJS unmountComponentAtNode() Method
React.js library is all about splitting the app into several components. Each Component has its own lifecycle. React provides us with 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:
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
import ReactDOM from
is the rendered content</div>
Step to Run Application: Run the application using the following command from the root directory of the project:
Output: Now open your browser and go to http://localhost:3000/, you will see the following output: