版本：
文件：
- https://cdn.bootcdn.net/ajax/libs/jquery-outside-events/1.1/jquery.ba-outside-events.js
- https://cdn.bootcdn.net/ajax/libs/jquery-outside-events/1.1/jquery.ba-outside-events.min.js
With jQuery outside events you can bind to an event that will be triggered only when a specific 'originating' event occurs outside the element in question.