On zurb foundation\'s website at http://foundation.zurb.com/docs/reveal.php they listed some Options including
open: callback function that triggers \'before\' the
Looking at Foundation 5 and found that the reveal library triggers open, opened, close, and closed events. Just attach a handler to the event you want.
$('#myModal').on([event], handler)
You can also pass the handlers via the settings argument. Check this out: https://github.com/zurb/foundation/blob/master/js/foundation/foundation.reveal.js#L92