eval(arguments) doesn't seem to be valid.

[kovik]

I'd like to pass arguments from one function to another, but I can't seem to get it through my head to make it work. I wrote a function similar to PHP's array_map(), which runs all members of an array through a callback (function). It's layout is:

ArrayMap: function(callba ck, array [, arg1 [,...]]);

If it wasn't for the need of extra arguments, I'd simply use forEach(). My attempt to pass the optional arguments from ArrayMap to the callback was to join them together with commas and eval() them into the callback call. It doesn't work though. Here's a very simplified example of what I mean:

function Test(a, b, c)
{
    alert('Length: ' + arguments.length + ', arguments[1]: ' + arguments[1]);
}
Test(1, eval('2, 3'));

The alert box will say "Length: 2, arguments[1]: 3".

Anyone know how I'd accomplish what I'm after? Oddly, I can't find any resources describing using eval() within a function call.

[gits]

hi ...

try the following ... i hope this is what you need ;)

function Test(a, b, c) { 
    alert('Length: ' + arguments.length + ', arguments[1]: ' + arguments[1]);
}
 
Test.apply(this, [1].concat(eval('[2, 3]')));
 

kind regards

[kovik]

You know, I never even looked at the documentation for the apply method before. That's fantastic!

They don't call you Expert for nothing ;)
Thank you. ^_^

[gits]

thank you the same goes for you ... glad to be able to help you ... the apply and call methods are real cool when developing oo-javascript ... because you may handle the scope really simple ...

kind regards