Create react portal

// modal file s an example

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

// create modal and use a portal to mount it in a specific DOM point
const Modal = (props) => {
  return (
    <React.Fragment>
      {ReactDOM.createPortal(
        <div>This is the modal</div>,
        document.getElementById('modal-root'),
      )}
    </React.Fragment>
  )
}


export default Modal;

// public html doc to define where the is the portal's destination
// in this case "modal-root"

<body>
  <div id="root"></div>
  <div id="modal-root"></div>
</body>

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