How know what object property the function was called from?

@rnd_meMay 27.2009 — #If I create an object and create a property "alerter" and set that equal to a function, is there any way to get that my function was called from a property named alerter?
[/QUOTE]
you can now.

[CODE]
 
 function whoAmI(fn, that){
 for(var i in that){ 
 if(that[i]===fn){ 
 return i; 
 }
 }
 } // end whoAmI()
 
 
 this.fred = function john(){
 var myName = whoAmI(arguments.callee, this);
 return myName;
 }
 
 fred()//==="fred"
 
 [/CODE]

you inspired me.

i was going to say no, you can't; that's what i already knew, when i had this idea.

it dawned on me that while it's not a property, it can be found. i wrote the simple logic into a re-usable function.

as long as it's used on objects, and you don't conflict the property names, it should work perfectly.

use "whoAmI(arguments.callee, this)" without modification to return the current function's property name.

if you give your function statement a name (like john in this example) you can use it instead of the long-winded arguments.callee for more compact code.

in this case, it would be whoAmI(john, this), and it would still return "fred".

"john" is not available to anything outside of the function itself, so you could give all your bound functions the "name" x.

you could then use whoAmI(x, this) anytime you need to find the property name.

adventurous coders can pass something besides [I]this [/I]as a second argument.

no refunds.

How know what object property the function was called from?

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