问题 Does MVC have a built in way to specify a CDN fallback for style sheets? I am trying to set up a fallback for the jQuery Mobile Structure style sheet. Here is my code in the RegisterBundles method: var JQMstyleSheet = new StyleBundle("~/JQMstyle", "http://code.jquery.com/mobile/1.3.1/jquery.mobile.structure-1.3.1.min.css").Include("~/theme/jquery.mobile.structure-1.3.1.css"); JQMstyleSheet.CdnFallbackExpression = "window.jQuery.mobile"; bundles.Add(JQMstyleSheet); When the page renders it