React Dialog Polyfill

<dialog> element bundled with polyfill for React


While many other more feature-rich React modal components exists, react-dialog-polyfill aims to be a simple binding of the native <dialog> element for React.

Differences from most of the existing components:

  • Native browser support in browsers like Chrome and Opera
  • Polyfill for un-supported browsers
  • Avoids using React.createPortal, allowing SSR in natively supported browsers
  • Dialog always will display in-front of other elements regardless of z-index
  • Selected info from dialog can be returned via <form> element
  • Well suited for Electron apps



yarn add react-dialog-polyfill


npm install react-dialog-polyfill


import React, { useState } from 'react'
import { Modal, Dialog } from 'react-dialog-polyfill'

const App = () => {
  const [dialog, setDialog] = useState(true)
  const [modal, setModal] = useState(true)
  return (
      <Dialog open={dialog} onClose={(e, dialog) => alert('You closed the dialog')}>
        <div>This is a dialog. Click "Close".</div>
        <button onClick={() => setDialog(false)}>Close</button>
      <Modal open={modal}
        onCancel={(e, dialog) => {
          alert('You canceled the modal')
        onClose={(e, dialog) => {
          const value = dialog.returnValue
          if (value) alert(`You answered "${dialog.returnValue}" to the modal`)
        <form method="dialog">
            This is a modal.
            Press <pre style={{ display: 'inline-block' }}>Escape</pre> to cancel.
          <div>Do you like modals?</div>
          <button type="submit" value="no">No</button>
          <button type="submit" value="yes" autoFocus>Yes</button>

export default App

Simply add the desired component to the React application using JSX.

The Modal component will block interaction with other elements when it is open, while the Dialog component will not.



open indicates if the modal is open. Default: false

On Close

onClose runs when the modal is explicitly closed. Default: (event, modal) => {}

That is the open prop state is toggled from true to false.

This means that having onCancel={() => setModal(false)} will call onClose from within onCancel.

On Cancel (Modal Only)

onCancel runs when the modal is canceled using Escape. Default: (event, modal) => {}

By default the modal itself will not close as open will still be set however the event will trigger.

It is recommended to set onCancel={() => setModal(false)} to have the modal close when Escape is pressed.