https://cdnjs.com/libraries/jquery
https://cdnjs.cloudflare.com/ajax/libs/jquery/3.4.1/jquery.js
https://cdnjs.cloudflare.com/ajax/libs/jquery/1.11.3/jquery.js
https://cdnjs.com/libraries/twitter-bootstrap
https://cdnjs.cloudflare.com/ajax/libs/twitter-bootstrap/3.2.0/css/bootstrap.css
https://cdnjs.cloudflare.com/ajax/libs/twitter-bootstrap/3.2.0/js/bootstrap.js
https://www.bootcdn.cn/twitter-bootstrap/
https://cdn.bootcss.com/twitter-bootstrap/3.2.0/css/bootstrap.min.css
https://www.bootcdn.cn/javascript-canvas-to-blob/
https://www.bootcdn.cn/blueimp-gallery/
https://cdn.bootcss.com/blueimp-gallery/2.33.0/js/blueimp-gallery.js
原文：https://www.cnblogs.com/chucklu/p/11100448.html