版本：
文件：
- https://cdn.bootcdn.net/ajax/libs/jquery-scrollto/1.4.6/jquery-scrollto.js
- https://cdn.bootcdn.net/ajax/libs/jquery-scrollto/1.4.6/jquery-scrollto.min.js
- https://cdn.bootcdn.net/ajax/libs/jquery-scrollto/1.4.6/jquery-scrollto.min.js.map