[whatwg] HTML 5 : Misconceptions Documented
t.broyer at gmail.com
Wed Aug 6 07:17:33 PDT 2008
On Wed, Aug 6, 2008 at 11:29 AM, Maciej Stachowiak wrote:
> I think Garret has a valid point (despite his needlessly rude tone) that the
> way we describe magical dynamic properties in a way that makes clear they
> are also visible to the "in" operator and to
> Object.prototype.hasOwnProperty. Are there any DOM bindings that have index
> (or named) properties which are *not* visible in such a way?
You mean "ECMAScript binding implementation", right?
Using reflection on a C# class won't give you a property named "0" or
"myform", even though you can get them using myvariable and
If I were to implement a binding in Python, I would do the same
(though « 0 in myvariable » and « "myform" in myvariable » would work
the same as in ECMAScript today; but dir(myvariable) wouldn't show "0"
> If not, then the current [IndexGetter] definition is useless and we need
> a better formalism.
...or rather the ECMAScript binding should define this particularity.
> I think Web IDL should provide a formalism to cater to this, because nearly
> all bindings with special dynamic properties work like this afaik. But I
> think it would have to involve a pseudo-method for the "hasOwnProperty"
> check (which "in" is based on).
hasOwnProperty is ECMAScript-specific.
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