Deprecation Notice: ReactDOM.render Is No Longer Supported In React 18

In React 18, the use of ReactDOM.render() as the entry point for rendering React components is deprecated. This means that you should no longer use ReactDOM.render() in your code. Instead, React 18 introduces a new API called createRoot().

Here’s how you can update your code to use the new API:

Before (using ReactDOM.render()):

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

ReactDOM.render(
  <App>,
  document.getElementById('root')
);

After (using createRoot()):

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

const root = document.getElementById('root');
ReactDOM.createRoot(root).render(
  <App>
);

The createRoot() function creates a new root and returns an object on which you can call render() to render your root component.

By deprecating ReactDOM.render(), React aims to improve performance by enabling concurrent rendering and prioritizing updates. It is recommended to update your code to use the new createRoot() API to leverage the new features and improvements offered by React 18.

About the Author Rex

I'm a passionate tech blogger with an insatiable love for programming! From my early days tinkering with code, I've delved into web dev, mobile apps, and AI. Sharing insights and tutorials with the world is my joy, connecting me to a global community of like-minded tech enthusiasts. Python holds a special place in my heart, but I embrace all challenges. Constantly learning, I attend tech conferences, contribute to open-source projects, and engage in code review sessions. My ultimate goal is to inspire the next generation of developers and contribute positively to the ever-evolving tech landscape. Let's code together!