Answers:
http://www.cdnjs.com托管了许多不太流行的JavaScript框架,包括:
bone.js://cdnjs.cloudflare.com/ajax/libs/backbone.js/1.0.0/backbone-min.js
(HTTP | HTTPS)
underscore.js://cdnjs.cloudflare.com/ajax/libs/underscore.js/1.5.2/underscore-min.js
(HTTP | HTTPS)
<script type="text/javascript"
src="//cdnjs.cloudflare.com/ajax/libs/backbone.js/1.0.0/backbone-min.js"></script>
Underscore.js
<script
src="//cdnjs.cloudflare.com/ajax/libs/underscore.js/1.5.2/underscore-min.js"></script>
对于不太流行的框架,http://www.jsdelivr.com/也是不错的选择
同样,在大多数情况下,最好在JavaScript源的URL中省略协议。
有关更多信息, 请访问http://www.paulirish.com/2010/the-protocol-relative-url/