I'm trying to implement fallback.js in a webapp me and my team are writing but bounced upon some issues. Loading over CDN works fine and falling back to local .js files when CDN is offline works too.
With jQuery 4, a new major version is released for the first time in years. Less legacy, modern browsers, more security – with manageable breaking changes.
jsDelivr is a free CDN for open-source files. We are tightly integrated with Github and npm, allowing us to automatically provide a reliable CDN service to almost every open-source project out there.