Subj : Re: Preventing 'new'
To   : netscape.public.mozilla.jseng
From : Jamie Nordmeyer
Date : Fri Mar 25 2005 02:42 pm

Hi again, Brenden.  I'm doing this because I intend to have a Registry class
with an OpenKey method that returns a reference to a RegistryKey class.
However, now that I"m thinking about it, I suppose something like 'var x =
new RegistryKey(HKEY_LOCAL_MACHINE, "\\Software", REG_CREATE | REG_OPEN);'
could work.  I'll have to give it some thought.  Either way, thanks again.

"Brendan Eich" <brendan@meer.net> wrote in message
news:42449278.3010902@meer.net...
> Jamie Nordmeyer wrote:
> > How do you hide an object's constructor so that you can't 'new' that
object?
> > Essentially, I want to be able to create the object in my C++ code, but
the
> > Javascript user should NOT be able to.  They should have to do the
> > following:
> >
> > var objB = objA.CreateObjB();
>
>
> Why do you want to require that?
>
> If you don't want a constructor, don't define one.  You can pass null as
> the |constructor| parameter to JS_InitClass, and you'll get the class's
> prototype object named by the class's name in the global object, instead
> of a constructor function with a property named 'prototype' referencing
> the class prototype.
>
> /be

.