版本：1.0.2
- https://cdn.bootcdn.net/ajax/libs/Ladda/1.0.2/ladda-themeless.min.css
- https://cdn.bootcdn.net/ajax/libs/Ladda/1.0.2/ladda.jquery.min.js
- https://cdn.bootcdn.net/ajax/libs/Ladda/1.0.2/ladda.min.css
- https://cdn.bootcdn.net/ajax/libs/Ladda/1.0.2/ladda.min.js
- https://cdn.bootcdn.net/ajax/libs/Ladda/1.0.2/spin.min.js