Subj : Re: Sharing Javascript objects between different XUL windows.
To   : Peter Wilson
From : Brendan Eich
Date : Thu Dec 23 2004 02:37 pm

Peter Wilson wrote:
> Peter Wilson wrote:
> OK. My misunderstanding. JS Wrappers give this effect.
> 
> I need to ask the XPCOM board how to check if two JS objects are the 
> same XPCOM object.
> 


It was worthwhile going through the exercise this far, so I'll answer 
here -- thanks for showing all the details, I bet it will help someone else.

XPCOM object identity says you QueryInterface to nsISupports, then 
compare pointers.  So in JS, that would be o.nsISupports == 
o2.nsISupports, if memory serves.

/be

.