I have some droppable areas, which are also draggable. It can happen that two or more droppable areas will get behind each other. Is there a way to drop a draggable item only into the area that is in the front? (z-index)
The situation is now, that the item gets added to all the areas, that are overlapping.
Thank you
Ok I have now a quite good solution and I want to share it with you guys... I have build a small plugin
来源：https://stackoverflow.com/questions/16497873/dropping-an-element-only-into-the-droppable-that-is-in-front