On Thu, Jul 16, 2009 at 10:45 AM, Adam Barth<w...@adambarth.com> wrote: > When a browser creates an instance of a DOM object defined by an > WebIDL interface, the browser must choose where to connect it's > prototype chain. For example, consider this case (where frames[0] is > a same-origin child frame): > > var doc = frames[0].document; > > 1) To which global object's prototypes ought |doc| connect to, the > parent frame running the script or the child frame from which we > obtained the document? > > My best guess is that the prototype chain ought to connect to the > child's prototype
Absolutely. |doc| will simply be pointing to the same object that frames[0].document does. So the prototype chain must be the same for both. And it's clear that when code inside frames[0] accesses that frames document it should have a protochain based on the globals in that frame. I don't have any strong opinions on where this is specced. / Jonas
