johnny / jquery-sortable

A flexible, opinionated sorting plugin for jQuery
http://johnny.github.io/jquery-sortable/
Other
1.52k stars 441 forks source link

Duplicate drop #266

Open lotusms opened 5 years ago

lotusms commented 5 years ago

Is there a callback function or parameter that I can use to avoid an item that has already been drag and dropped across two lists from duplicating? In other words, it can only exist once in either list.