版本：
文件：
- https://cdn.bootcdn.net/ajax/libs/jquery-countto/1.2.0/jquery.countTo.js
- https://cdn.bootcdn.net/ajax/libs/jquery-countto/1.2.0/jquery.countTo.min.js
- https://cdn.bootcdn.net/ajax/libs/jquery-countto/1.2.0/jquery.countTo.min.js.map