jquery smart loading?

Question

JavaScript

There is cdn of google and yandex, each of them has jquery. Is it possible to determine from which cdn the jquery file is already loaded into the cache, and use exactly this file on the page?

Answer 1

Why so much "smart"? Choose one CDN and download files from it.

Answer 2

If you are not interested in IE and Safari, then you can use ServiceWorker and caches for this . See how the ServiceWorker works in the UpUp sources .