Skip to main content

import ReactDOM from 'react-dom/client'

The statement import ReactDOM from 'react-dom/client' is used in React applications, specifically starting from React 18, to import the client-side rendering capabilities of ReactDOM.
Explanation:
  • ReactDOM:
    This refers to the core React package that provides methods for interacting with the Document Object Model (DOM). It's responsible for rendering React components into the browser's DOM.
  • 'react-dom/client':
    This specific import path indicates that you are importing the client-specific methods of ReactDOM. In earlier versions of React (prior to React 18), you would typically import ReactDOM directly from 'react-dom'. However, with the introduction of React 18 and its concurrent features, the client-side rendering functionalities were separated into a dedicated 'react-dom/client' module.
Key functions you would typically use after this import:
  • createRoot(container[, options]): This function is used to create a React root for a given DOM element (container). It returns a root object that you can then use to render your React application. 
  import ReactDOM from 'react-dom/client';

  const root = ReactDOM.createRoot(document.getElementById('root'));
  root.render(
    // Your React components here
  );
  • hydrateRoot(container, element[, options]): This function is used for hydrating server-rendered HTML. If you are using server-side rendering (SSR), hydrateRoot is used on the client to attach event listeners and make the server-rendered HTML interactive.
In essence, import ReactDOM from 'react-dom/client' is the modern way to set up client-side rendering in React 18 and later, providing access to the createRoot and hydrateRoot functions for managing your React application's lifecycle in the browser
Back to top