分类：Version 1.12 & 2.2

Aspects of the API that were changed in the corresponding versions of jQuery. Changes in jQuery 1.12 and 2.2 includes performance improvements of the selector engine, manipulation of class names for SVG elements, support for the Symbol type and iterators added in ES2015, and a new hook has been added for filtering HTML. A jQuery Migrate Plugin was offered to help developers with a transitional upgrade path.

For more information, see the Release Notes/Changelog

工具类

jQuery.uniqueSort()

Sorts an array of DOM elements, in place, with the duplicates removed. Note that this only works on arrays of DOM elements, not strings or numbers.