No. It’s just whatever JavaScript interpreter the platform’s web view provides. That is, it’s just like the JS you’d get in a web app. If you want additional APIs like JQuery or whatever, you’ll need to copy the JS file into your app and load it at runtime.
Also, you keep changing topics in the middle of a thread. Please don’t do that; it’s confusing to read, and makes it harder for people to find answers later because the discussion doesn’t match the thread topic. Start a new thread instead.