drop *1.4.7* ============ Called when a valid jQuery UI draggable has been dropped onto the calendar.
function( *date*, *allDay*, *jsEvent*, *ui* ) { }
`date` holds the JavaScript Date object of where the draggable was dropped. `allDay` holds a boolean of whether the draggable was dropped on an all-day cell (like in month view) or in a slot with a specific time (like in agenda view). `jsEvent` holds the primitive JavaScript event, with information like mouse coordinates. `ui` holds the jQuery UI information. `this` holds the DOM element that has been dropped. To see this callback function in action, view the [droppable]() article or look at [this example](/js/fullcalendar-1.5.3/demos/external-dragging.html).