AFAIK, rendering and animations are on the same thread as JS. web workers have their own thread, but I think adoption is low. Network requests are async (JS d

AFAIK, rendering and animations are on the same thread as JS. web workers have their own thread, but I think adoption is low. Network requests are async (JS doesn't have to wait for the network request for it to do other things), but JS can still only start one network request at a time.