jQuery UI Droppable - Prevent propagation
#draggable { width: 100px; height: 40px; padding: 0.5em; float: left; margin: 10px 10px 10px 0; }
#droppable, #droppable2 { width: 230px; height: 120px; padding: 0.5em; float: left; margin: 10px; }
#droppable-inner, #droppable2-inner { width: 170px; height: 60px; padding: 0.5em; float: left; margin: 10px; }
$(function() {
$("#draggable").draggable();
$("#droppable, #droppable-inner").droppable({
activeClass: 'ui-state-hover',
hoverClass: 'ui-state-active',
drop: function(event, ui) {
$(this).addClass('ui-state-highlight').find('> p').html('Dropped!');
return false;
}
});
$("#droppable2, #droppable2-inner").droppable({
greedy: true,
activeClass: 'ui-state-hover',
hoverClass: 'ui-state-active',
drop: function(event, ui) {
$(this).addClass('ui-state-highlight').find('> p').html('Dropped!');
}
});
});
Drag me to my target
Outer droppable
Inner droppable (not greedy)
Outer droppable
Inner droppable (greedy)
When working with nested droppables — for example, you may have an editable directory structure displayed as a tree, with folder and document nodes — the greedy option set to true prevents event propagation when a draggable is dropped on a child node (droppable).