React Hello world (root.render방식) Ex

 

html파일

<div id="root">
    <!-- This element's contents will be replaced with your component. -->
</div>

 

Tsx파일

import ReactDOM from 'react-dom/client';

const root = ReactDOM.createRoot(document.getElementById('root') as HTMLElement);
root.render(<h1>Hello, world!</h1>);