Subj : Re: Enumeration of extended properties of Array and Object prototypes
To   : netscape.public.mozilla.jseng
From : Chris Zumbrunn <chris@deployzone.com>
Date : Sat Mar 20 2004 06:18 am

Brendan Eich wrote:

> See 
> http://www.mozilla.org/js/language/js20/core/definitions.html#visibility-attri
> butes.

OK, so there will still be no way to make a user-defined dynamic or 
class property non-enumerable.

> Why do you want this, exactly?  For what purpose?

Hmm, I'm surpised you're asking. What's the point of being able to add 
custom methods to the Object or Array prototypes if doing so will break 
any application that uses for/in loops?

.