jQuery UI 最新稳定版 1.12.1 发布了。更新内容如下：

Core & Utilities

Widget Factory

• Fixed: Memory leak and bad performance for managed classes on transient elements (#15043, 89af4c2)

• Fixed: instance() should return undefined for empty sets (#15019, 3dd8a09)

Interactions

Draggable

• Fixed: Incorrect focus handling on mousedown (#15046, 8c66934)

Sortable

• Fixed: Calling cancel() throws an error (#15042, 19027bb)

Widgets

Autocomplete

• Fixed: JSONP demo does not work over HTTPS (#14974, 930934f)

Checkboxradio

• Fixed: Label handling with jQuery 3.x (#15006, 55cd948)

• Checkboxradio: Radio checkmarks are only visible on hover (#15003, 57537d0)

Controlgroup

• Fixed: Handle child elements that don't have options defined (f67f929)

Dialog

• Fixed: Support deprecated button options (#15016, 6c754b4)

Menu

• Fixed: Support number pad keyboard input (#15031, ac9ca9e)

Slider

• Added: Demo for custom handle (#15023, 51461d5)

详细更新列表：

• http://jqueryui.com/changelog/1.12.1/

发行说明及下载地址：

• http://blog.jqueryui.com/2016/09/jquery-ui-1-12-1/