如何删除从其列表中删除的项目？

here is a simple question. I have a 'ul' which i have made sortable via jquery-ui's sortable() function. I want to remove elements when they are dragged off the list. The way i have it implemented works in the sense that when i drag an element away from the list it gets removed, but it also gets removed when i just rearrange the list. How do i achieve the behavior i am looking for without this unintended behavior. Below is all the code:here is a simple question. I have a 'ul' which