jQuery is highly focused on the DOM and provides a nice abstraction around it. In doing so, it makes use of various well known design patterns which just hit me yesterday. One obvious example would be the Decorator pattern. The jQuery object provides new and additional functionality around a regular DOM object.
例如，DOM有一个原生的insertBefore方法，但没有相应的insertAfter方法.有多种实现available来填补这一空白，jQuery就是这样一个库，它提供了以下功能:
$(selector).after(..)
$(selector).insertAfter(..)
There are many other examples of the Decorator pattern being heavily used in jQuery.
您注意到库本身还包含哪些其他设计模式的例子，无论大小？此外，请提供一个使用该模式的示例.
Making this a community wiki as I believe that various things people love about jQuery can be traced back to well known design patterns, just that they are not commonly referred to by the pattern's name. There is no one answer to this question, but cataloging these patterns will provide a useful insight into the library itself.