Check if a string is an function call

var $strFunc = 'myFunction'; typeof($strFunc) == 'function';?

[BlackDex]

Hello there,

I Have created an function which callsback to an other function that is variable.

Currently i use eval() to check if it is an function or not.
But i wonder if there is a way to do this without the use of eval.

Example:

myFunction('myCallback', 'Nothing');
function myFunction($callback, $others) {
var $myFunctionHandler;
try {
$myFunctionHandler = eval($callback);
} catch ($expt) {
alert('callback is not a function');
return;
}
//Much other code etc.. etc..
$myFunctionHandler('Arg1', 'Arg2');
}
function myCallback($Arg1, $Arg2) {
alert($Arg1 +' - '+ $Arg2);
}

[Fotiman]

function myFunction($callback, $others) { 
 if( typeof $callback!= "function" ) 
 { 
 alert('callback is not a function'); 
 return; 
 } 
} 
function myCallback($Arg1, $Arg2) { 
 alert($Arg1 +' - '+ $Arg2); 
} 
// Don't wrap the first argument with quotes 
myFunction(myCallback, 'Nothing'); 

That is, don't pass a string... pass the actual function reference.

[edited by: Fotiman at 5:37 pm (utc) on Nov. 29, 2006]

[BlackDex]

The stranges thing is, that i had tryed this.
And for some reason i had some problems with it.

Now i tryed it again, and it seems to be working very nicely :).

Thx for letting me check this out again.