Adds an event handler that runs when playback is paused.
An element can be paused by a user clicking the gallery or slideshow's
pause button or by calling its pause() function
Notes:
When using onPause() on a gallery, make sure the
gallery is one where the isPlayable
capability is true.
If you change a gallery's type
to one that doesn't support onPause(), your code may no longer function correctly.
handler(event: Event): void The name of the function or
the function expression to run when the element is paused.
This method doesn’t return any custom errors, but may return standard errors. Learn more about standard Wix errors.