On 09.04.2010 10:39, Benjamin Jan Alexander Rosseaux wrote:
Dmitry A. Soshnikov schrieb:
var x = 10;
alert(delete x); // true, should be false (for [[Configurable]])
alert(x); // undefined
But identifier resolution for "x" binding (which should be resolved in
the global object since it isn't deleted) from the function, says not
"undefined", but "x" is
not defined. If do not use delete, it resolves to 10.
(function () {
alert(x);
})();
Hm, i've checked my DELETE operator + Object.Delete + EnvRec.Delete
code implementations against the ES5 final spec PDF again once more,
but all instruction steps between my implementation and the PDF are
exactly equal. Can you provide me more information to this, what you
does mean, what may be wrong?
See 10.5 (Declaration Binding Instantiation) step 2. So only in "eval"
code binding can be deleted (for details see CreateMutableBinding, and
exactly for global context -- 10.2.1.2.2 as it has Object Environment
Record with Global object as Binding object).
But, yeah, as it was mentioned by David Herman, unfortunately such
discussion is already off-topic for this ML; so maybe I'll contact to
you later directly.
Good luck with your project.
Anyway, a new version is available, where I've fixed some other small
bugs on other code locations.
Benjamin
Yes, I'll check it later, I found some other bugs already.
Dmitry.
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