[darrhiggs]

Sorry to dump nothing more than links, but I think they should provide what you are looking for.

(requests) https://developer.mozilla.org/en/docs/Web/API/Fetch_API http://caniuse.com/#feat=fetch

(css selectors) https://developer.mozilla.org/en-US/docs/Web/API/Document/qu... https://developer.mozilla.org/en-US/docs/Web/API/Document/qu... http://caniuse.com/#search=queryselector