Question

I would like to fire an event when a specific draggable element is dropped in any droppable element.

Each droppable element has a drop event, but using that would be awkward.

Answer 1

Because it would be nonsense. Droppable has drop, Draggable has drag, why should object with Draggable interface has event dropped which is from its name event for droppable when it's released

You can implement bind (dragover,dragenter,drop) to object which should receive dropped element, but this shouldn’t be default for Draggable (info)

Or try to create what you need via dragstop callback in Draggable