Depends on the CDN. If you pay the CDN, and they're not using your customers' data to make money, then probably not. If you don't, or they do, then it's a vio

Depends on the CDN. If you pay the CDN, and they're not using your customers' data to make money, then probably not. If you don't, or they do, then it's a violation of EU law if you do not allow (at least) EU users to easily control the use of that CDN. If you are making money, and you try telling the regulator that for your business, that you need (legitimate interest) to have jQuery hosted by a CDN that is using EU personal data illegally, then you might get a fine if they are reachable by the EU, because very few judges are going to believe that bullshit.