Event Listener For Dialog Window As Modal

app.js

(function() {
   
  let openDialog = document.getElementById('openDialog');
  let openModalDialog = document.getElementById('openModalDialog');
  let dialogWindow = document.getElementById('dialogWindow');
  
  openDialog.addEventListener('click', () => {
    dialogWindow.show();
  })

  openModalDialog.addEventListener('click', () => {
    dialogWindow.showModal();
  })
})();