react 16 vs 17 code example
Example 1: react 17
npm install react@17.0.0 react-dom@17.0.0
Example 2: react 17
yarn add react@17.0.0 react-dom@17.0.0
Example 3: react 17 install
const rootNode = document.getElementById('root');
ReactDOM.render(<App />, rootNode);