版本：
文件：
- https://cdn.bootcdn.net/ajax/libs/visibly.js/0.1.1/visibly.js
- https://cdn.bootcdn.net/ajax/libs/visibly.js/0.1.1/visibly.min.js
- https://cdn.bootcdn.net/ajax/libs/visibly.js/0.1.1/visibly.min.js.map