ReactJS isDOMComponent() Method

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 this article, we will know how to use isDOMComponent() method. This method returns true if the instance is a DOM component.

Creating React Application And Installing Module:

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.

App.js

import React from 'react';
import { isDOMComponent } from 'react-dom/test-utils';
  
// Defining our App Component
const App = () => {
  
  // Function to demonstrate isDOMcomponent() method
  function func() {
    var a = isDOMComponent(el);
    console.log("The Following element is a DOM component :", a);
  }
  
  const el = <div>
      <h1>element</h1>
  </div>
  
  // Returning our JSX code
  return <>
      <div id='el'>
          <h1>GeeksforGeeks</h1>
          <button onClick={func}>Click Here !!</button>
      </div>
  </>;
}
  
// Exporting your Default App Component
export default App