Fore versions prior to 3.x provided fx-dialog element. This has been removed and
standard HTML dialog element is now used instead.
For reference see on mdn
While we dropped the fx-dialog element, the fx-show and fx-hide
actions are still available.
Open a dialog with the fx-show action and using noscript way to close the dialog as defined by HTML.
In modal mode you cannot interact with Controls on the page.
fx-hideOpens a modal dialog but uses a fx-hide action to close it. This will dispatch
a dialog-hidden event we can catch and show a message. You can also listen for the close
and cancel events.
This opens a non-modal dialog by adding a modal="false" attribute.
Please note that the 'Test Control' can still be edited and even update the dialog content.