ReactJS isDOMComponent() Method Last Updated : 01 Jun, 2021 Comments Improve Suggest changes Like Article Like Report 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 Step to Run Application: Run the application using the following command from the root directory of the project: npm startOutput: Now open your browser and go to http://localhost:3000/, you will see the following output: Reference: https://reactjs.org/docs/test-utils.html#isdomcomponent Comment More infoAdvertise with us Next Article ReactJS isDOMComponent() Method D dheerchanana2002 Follow Improve Article Tags : Web Technologies ReactJS ReactJS-Methods Similar Reads ReactJS isCompositeComponent() 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 see how to use isCompositeComponent() method. 2 min read ReactJS isElement() 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 isElement() method. The isElem 2 min read ReactJS componentDidCatch() Method The componentDidCatch() method is invoked if some error occurs during the rendering phase of any lifecycle methods or any children components. This method is used to implement the Error Boundaries for the React application. It is called during the commit phase, so unlike getDerivedStateFromError() w 2 min read ReactJS componentDidMount() Method In React, componentDidMount() is a lifecycle method in React that is called once a component has been rendered and placed in the DOM. This method is invoked only once during the lifecycle of a component, immediately after the first render, which is why it is useful for operations like fetching data, 7 min read ReactJS isCompositeComponentWithType() 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 isCompositeComponentWithType() 2 min read Like