Re: [JSMentors] Fwd: Mutating a object to a function

[Ionut G. Stan]

On 13/Dec/10 11:57 PM, Rajat wrote:
Hi,
I was trying something today when this occurred to me :

    var a = {};


    function mutate(obj){

         obj = function(){

             alert('hey');

         };

    }


    mutate(a);

    a();


Firebug throws the following error:

    TypeError: a is not a function.



I want to understand why we can change the passed object inside mutate
by lets say adding more properties to it but not this way where I am
redefining it as a function object.

I hope my question is clear.

Thanks,

Hopefully, you're question is just out of curiosity and not because 
you'd want to use such a feature. That code base would be really hard to 
maintain. Explicit is better than implicit. If you want `a` to hold a 
new value, then just reassign it.

--
Ionuț G. Stan  |  http://igstan.ro

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