版本：2.2.1
- https://cdn.bootcdn.net/ajax/libs/jquery/2.2.1/jquery.js
- https://cdn.bootcdn.net/ajax/libs/jquery/2.2.1/jquery.min.js
- https://cdn.bootcdn.net/ajax/libs/jquery/2.2.1/jquery.slim.js
- https://cdn.bootcdn.net/ajax/libs/jquery/2.2.1/jquery.slim.min.js