How To Use Reactdom Createportal In React 16

React 16 brought some exciting new features to the table, and one of the most useful additions is ReactDOM.createPortal. This feature allows developers to render a React component outside of the parent component's DOM hierarchy, opening up a world of possibilities for creating overlays, modals, and other components that need to "break out" of their usual container.

To use ReactDOM.createPortal effectively, you first need to understand its purpose. By leveraging this method, you can render a component's tree into a different part of the DOM, even if it's not a direct child of the current component. This is particularly handy when you need to render a component that overlays existing content or appears in a separate part of the document structure.

Implementing ReactDOM.createPortal is straightforward. Here's a simple guide to get you started:

1. Import the necessary modules at the beginning of your file:

Jsx

import React from 'react';
import ReactDOM from 'react-dom';

2. Create a new React component that you want to render using createPortal:

Jsx

const MyPortalComponent = () =&gt; (
  <div>
    <p>This is rendered using ReactDOM.createPortal!</p>
  </div>
);

3. Add a container element in your JSX where you want to render the portal component. This could be anywhere in your HTML, outside of your main component hierarchy:

Jsx

const App = () =&gt; (
  <div>
    <h1>Main App Content</h1>
    <div id="portal-container"></div>
  </div>
);

4. Render the portal component using createPortal:

Jsx

ReactDOM.createPortal(
  ,
  document.getElementById('portal-container')
);

5. Make sure to call this creation code in a component lifecycle method like componentDidMount or whenever you need to render the portal component.

Using ReactDOM.createPortal allows you to maintain the desired component structure within React while rendering content outside of the normal flow. This is particularly helpful when dealing with modals, tooltips, or any other overlays that need to be positioned or styled independently of the main layout.

Remember, ReactDOM.createPortal is a powerful tool, but it's essential to use it judiciously. Overusing portals can make your code harder to follow and debug. Always consider whether breaking out a component using createPortal is the best solution for your specific use case.

In conclusion, ReactDOM.createPortal in React 16 provides a convenient way to render components outside of the natural DOM hierarchy. By following the simple steps outlined above, you can start leveraging this feature to create immersive user experiences and improve the overall design of your React applications. Happy coding!

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