Richard, thanks it works
On Feb 1, 6:12 pm, Richard Quadling <rquadl...@googlemail.com> wrote:
> On 1 February 2010 15:44, buda <www...@pochta.ru> wrote:
>
>
>
>
>
> > it was simple sheme and it wasnt the stright code
> > it must be like this
>
> > var Obj = {};
> > ...
> > Obj.meth = Prototype.emptyFunction;
> > ...
> > if (Obj.meth !== Prototype.emptyFunction) {
> > alert('Not equal');
> > }
>
> > does this irritates you?
>
> > On Feb 1, 5:37 pm, Alex Wallace <alexmlwall...@gmail.com> wrote:
> >> This is getting into dirty territory (or at least I'd feel so) but:
>
> >> >>> var x = function(){};
> >> >>> var y = function(){ alert("foo"); }
> >> >>> x + "";
> >> "function () { }"
> >> >>> y + "";
>
> >> "function () { alert("foo"); }"
>
> >> Best,
> >> Alex
>
> >> On Mon, Feb 1, 2010 at 10:29 AM, buda <www...@pochta.ru> wrote:
> >> > the question is: how to check if a function is empty or have any code
>
> >> > On Feb 1, 5:18 pm, Richard Quadling <rquadl...@googlemail.com> wrote:
> >> > > On 1 February 2010 13:02, buda <www...@pochta.ru> wrote:
>
> >> > > > var Obj = {};
> >> > > > Obj.meth = Prototype.emptyFunction;
>
> >> > > > if (Obj.meth !== Prototype.emptyFunction) {
> >> > > > alert('Not equal');
> >> > > > }
>
> >> > > > why alert show everytime?
>
> >> > > > --
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>
> >> > > Why?
>
> >> > > The main advantage of the emptyFunction is that you can always call it
> >> > > without having to do a null/undefined test first.
>
> >> > > If you want to know if it has been assigned something, then don't
> >> > > assign the emptyFunction, leave it as null and then test if it is
> >> > > null.
>
> >> > > --
> >> > > -----
> >> > > Richard Quadling
> >> > > "Standing on the shoulders of some very clever giants!"
> >> > > EE :http://www.experts-exchange.com/M_248814.html
> >> > > EE4Free :http://www.experts-exchange.com/becomeAnExpert.jsp
> >> > > Zend Certified Engineer :
> >> >http://zend.com/zce.php?c=ZEND002498&r=213474731
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> >> > > - Show quoted text -
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>
> Can you try ...
>
> alert((Obj.meth + '') == (Prototype.emptyFunction + ''));
>
> I'm getting True for when Obj.meth is the emptyFunction.
>
> --
> -----
> Richard Quadling
> "Standing on the shoulders of some very clever giants!"
> EE :http://www.experts-exchange.com/M_248814.html
> EE4Free :http://www.experts-exchange.com/becomeAnExpert.jsp
> Zend Certified Engineer :http://zend.com/zce.php?c=ZEND002498&r=213474731
> ZOPA :http://uk.zopa.com/member/RQuadling- Hide quoted text -
>
> - Show quoted text -
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