你可以使用:

ui.draggable.find('a').attr('href')

这将在可拖动元素的所有后代中查找 a 元素.

This will look for the a element among all descendants of the draggable element.

要仅查看可拖动对象的直接子级，请改用:

To look only at the direct children of the draggable, use this instead:

ui.draggable.children('a').attr('href')