如何检查uqu-draggable是否在jquery中被破坏？

I have an element which is draggable. And I am conditionally destroying the ui-draggable from the element. If the checkbox is checked then apply ui-draggable and if not then destroy it. Now what I want to check whether the ui-draggable is destroyed. I want to return true if it is and if not then false.I have an element which is draggable. And I am