这是一个最近已修复的错误:

This is a bug that has been fixed very recently:

http://bugs.jqueryui.com/ticket/8713

https://github.com/jquery/jquery-ui/commit/9b908878ae3a9c0fbbd9958b579f223a648 /a>

https://github.com/jquery/jquery-ui/commit/9b908878ae3a9c0fbbd9958b579f223a648c5c69