This is silly.
I can use the closure pattern to vend objects that do not satisfy the
internal constraints the DOM imposes on some of its objects. No proxies
in sight.
So why is the method you wrote named "isDOMProxy" and whatever in the
world does it have to do with Proxy?
/be
Andrea Giammarchi wrote:
and in both cases you would have ...
Proxy.isDOMProxy = function (node) {
try {
document.documentElement.appendChild(node);
document.documentElement.removeChild(node);
return false;
} catch(gotcha) {
return true;
}
};
that's why I have talked about inconsistencies all over at the very
beginning of this thread :)
br
On Sat, Jan 12, 2013 at 10:26 AM, Nathan Wall <[email protected]
<mailto:[email protected]>> wrote:
Nathan wrote:
>
> Hey Tom, I think you missed my point. The point was that in
David and Boris' discussion they agreed that the DOM should throw
if it is given a Proxy in `appendChild`. That sounded to me like
it presumed that the DOM had a magical ability to distinguish
between DOM objects and their proxies. That seemed to contradict
the point David made that Proxies should not be distinguishable
from their targets (e.g. the no `Proxy.isProxy` decision). If real
DOM had a way to determine if something was a proxy (with a target
of a *real* DOM node) and throw but there was no way for an
emulated DOM (in a non-DOM environment) to determine if an object
was a proxy with a target to an emulated DOM node or just a plain
emulated DOM node, then the DOM has magical abilities that the
emulated DOM can't have. That was my concern.
>
> David's reply works, though, I think. He stated that since you
have to create DOM nodes using a method of the DOM itself
(`document.createElement`, `document.createTextNode`), then
emulated DOM could track all objects created and compare them
against objects passed into `appendChild`, and since a proxy would
have a different object identity from its target, the emulated DOM
would have a way to distinguish proxies from their targets.
>
> Nathan
In short, if real DOM can throw when given a proxy of a real DOM
node, fake DOM should also be able to throw when given a proxy of
a fake DOM node.
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