trigger-on-node-remove.js

// Source: https://stackoverflow.com/questions/2200494/jquery-trigger-event-when-an-element-is-removed-from-the-dom

(function($){
  $.event.special.destroyed = {
    remove: function(o) {
      if (o.handler) {
        o.handler()
      }
    }
  }
})(jQuery);

$('.slider__item .slider__text').bind('destroyed', function(event) {
  //alert('yup');
});