Subj : Re: Constructor function cleanly failing
To   : netscape.public.mozilla.jseng
From : Matthew Mondor
Date : Mon Jan 10 2005 03:28 pm

On Mon, 10 Jan 2005 09:49:28 -0800
Shanti Rao <shantirao@yahoo.com> wrote:

> You can trap exceptions in the calling code, like
> 
> var a;
> try {
>   a = new Foo()
> } catch(x) {}
> 
> The exception (x) can have extra information passed from your constructor.
> 
> JS_SetPendingException(cx,STRING_TO_JSVAL(JS_NewStringCopyZ(cx,"Error 
> description")));
> *rval = OBJECT_TO_JSVAL(NULL);
> return JS_FALSE;

Ah thanks, this fixes the problem I had :)

Matt

.