- Type: string
This read only property indicates whether the popup is open or not. Four values are possible:
closed: The popup is closed and not visible.
open: The popup is open and visible on screen.
showing: A request has been made to open the popup, but it has not yet been shown. This state will occur during the popupshowing event.
hiding: The popup is about to be hidden. This state will occur during the popuphiding event.