Subj : Re: JavaScript problem
To   : netscape.public.mozilla.jseng
From : Adrian Herscu <bmf1972@icqmail.com>
Date : Sun Oct 12 2003 09:06 pm

Brendan Eich wrote:

> Adrian Herscu wrote:
> 
>> I want o.f() to execute in caller's context and without passing the 
>> "this" reference as a parameter.
>>
>> A simplified version:
>>
>> function f() {
>>     alert( f.caller.p );
>> }
>>
>>
>> function g() {
>>     f();        // executes in the default context - work
>>     f.call(this);    // executes in a forced context - doesn't work
> 
> 
> 
> f.caller in the second case will be Function.prototype.call -- the 
> native call method.  It has no p property, of course.
> 

Is there any reason behind this? After all, both call f().
Why the "caller" refers to different objects, depending on the call style?

 >
> If you want to work in Mozilla and IE, you could either code both ways 
> and test user agent to decide which tine of the code fork to follow, or 
> you could loop over caller until you find p (and not more than twice).
> 
> /be
> 
>> }
>> g.p = "hello";
>>
>> g();
>>
>>
>>
>>
>>
>

.