Subj : Re: JS_GetFunctionId for an anyomous function
To   : netscape.public.mozilla.jseng
From : Mike Moening
Date : Tue Mar 29 2005 03:11 pm

There must be a way since venkman appears to do able to do it.
It shows the anonymous functions in bracket under the script file name:

[execute]
[setN]

Any sneaky back handed way other than parsing the source line by hand?

Mike M.

"Brendan Eich" <brendan@meer.net> wrote in message
news:4249C1CC.3060905@meer.net...
> Mike Moening wrote:
> > When the NewScript hook is fired some of the functions are anonymous and
> > return NULL.
>
>
> That's right -- those functions have no declared name, they are indeed
> anonymous.
>
>
> > In the example below, how do I get the names "execute" and "setN" when
their
> > respective NewScript hooks are fired for the functions on lines 14 and
18?
>
>
> You can't generally impute a name to a function just because that
> anonymous functions happens to be referenced by certain properties.  The
> function could be named by many properties.
>
> If you want to give these functions names, declare names for 'em (this
> makes for redundancy, of course, but it's the way JS1 works -- JS2 will
> fix this).  So:
>
> . . .
>    this.execute = function execute() {           /* Line 14 */
>      this.results = factor(this.n);
>    }
> }
> Factorial.prototype.setN = function setN(n) {   /* Line 18*/
>    this.n = n;
> }
>
> This question comes up a lot, and that's the best answer until JS2/ES4
> features start to show up, probably some time this summer.
>
> /be
>
>
> > Thanks!
> >
> >
> > Here's the script:
> > ------------------------------
> > function Factorial(n)
> > {
> >   if(n!=null)
> >     this.n=n;
> >   else
> >     this.n=0;
> >   this.results=0;
> >   var self = this;
> >   function factor(i) {
> >     if (i <= 1)
> >       return 1;
> >     return i * factor(i-1)
> >   }
> >   this.execute = function() {                     /* Line 14 */
> >     this.results = factor(this.n);
> >   }
> > }
> > Factorial.prototype.setN = function(n) {    /* Line 18*/
> >   this.n = n;
> > }
> >
> > var oFact = new Factorial();    //Create our "object"
> > oFact.setN(5);                        //Set the private data.
> > oFact.execute();                     //Call the method.
> > ----------------------------
> >
> >

.