Used to add the component from the outside of root element instead added inside the component
Mainly used to do the model popup, dialog, etc
Edit index.html by adding element
Add portal in the component
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<html>
<body>
<div id="root"></div>
<div id="modal-root"></div>
</body>
</html>import import React,{ lazy, Suspense} from 'react';
import ReactDOM from 'react-dom';
import Backdrop from "./backdrop";
const ErrorModal = () => {
return ReactDOM.createPortal(<Backdrop/>, document.getElementById("modal-root"));
}