版本：
文件：
- https://cdn.bootcdn.net/ajax/libs/LoadGo/2.2.1/loadgo-nojquery.js
- https://cdn.bootcdn.net/ajax/libs/LoadGo/2.2.1/loadgo-nojquery.min.js
- https://cdn.bootcdn.net/ajax/libs/LoadGo/2.2.1/loadgo.js
- https://cdn.bootcdn.net/ajax/libs/LoadGo/2.2.1/loadgo.min.js