Pass array elements as function arguments

[FrederikVds]

I have a function which can be called with an unlimited number of
arguments.
I want to call another function with exactly the same arguments. I know
I can get the arguments in the arguments object, and as such also in an
array, but how do you pass the elements of an array to another function
as parameters?

I hope you understand what I mean.

Thanks,
Frederik Vanderstraeten

[Martin Honnen]

FrederikVds wrote:

I have a function which can be called with an unlimited number of
arguments.
I want to call another function with exactly the same arguments. I know
I can get the arguments in the arguments object, and as such also in an
array, but how do you pass the elements of an array to another function
as parameters?

Use the apply method of functions e.g.

function f () {
alert(arguments.length);
}
function g () {
f.apply(this, arguments);
}

g(1, 2, 3);

see
<http://developer.mozilla.org/en/docs/Core_JavaScript_1.5_Reference:Global_Objects:Funct ion:apply>

--

Martin Honnen
http://JavaScript.FAQTs.com/

[pcx99]

Martin Honnen wrote:

FrederikVds wrote:

>I have a function which can be called with an unlimited number of
arguments.
I want to call another function with exactly the same arguments. I know
I can get the arguments in the arguments object, and as such also in an
array, but how do you pass the elements of an array to another function
as parameters?

Use the apply method of functions e.g.

function f () {
alert(arguments.length);
}
function g () {
f.apply(this, arguments);
}

g(1, 2, 3);

see
<http://developer.mozilla.org/en/docs/Core_JavaScript_1.5_Reference:Global_Objects:Funct ion:apply>

Truly elegant.

--
http://www.hunlock.com -- Musings in Javascript, CSS.
$FA

[Frederik Vanderstraeten]

Martin Honnen schreef:

FrederikVds wrote:

>I have a function which can be called with an unlimited number of
arguments.
I want to call another function with exactly the same arguments. I know
I can get the arguments in the arguments object, and as such also in an
array, but how do you pass the elements of an array to another function
as parameters?

Use the apply method of functions e.g.

function f () {
alert(arguments.length);
}
function g () {
f.apply(this, arguments);
}

g(1, 2, 3);

see
<http://developer.mozilla.org/en/docs/Core_JavaScript_1.5_Reference:Global_Objects:Funct ion:apply>

Thanks a lot, I had no idea about the existence of this function. I
should have searched at devmo instead of Google.

[Dr J R Stockton]

In comp.lang.javascript message
<11**********************@73g2000cwn.googlegroups. com>, Tue, 19 Dec 2006
07:56:16, FrederikVds <fr*********************@gmail.comwrote:

>I have a function which can be called with an unlimited number of
arguments.
I want to call another function with exactly the same arguments. I know
I can get the arguments in the arguments object, and as such also in an
array, but how do you pass the elements of an array to another function
as parameters?

Rewrite the function to take a single parameter which will be an Object
holding all the previous parameters. You can easily pass that Object in
the next call. Untested.

That should work in older browsers; subtler ways may only work in newer
ones.

--
(c) John Stockton, Surrey, UK. ?@merlyn.demon.co.uk Delphi 3? Turnpike 6.05
<URL:http://www.merlyn.demon.co.uk/TP/BP/Delphi/&c., FAQqy topics & links;
<URL:http://www.bancoems.com/CompLangPascalDelphiMisc-MiniFAQ.htmclpdmFAQ;
<URL:http://www.borland.com/newsgroups/guide.htmlnews:borland.* Guidelines

[Frederik Vanderstraeten]

Dr J R Stockton schreef:

In comp.lang.javascript message
<11**********************@73g2000cwn.googlegroups. com>, Tue, 19 Dec 2006
07:56:16, FrederikVds <fr*********************@gmail.comwrote:

>I have a function which can be called with an unlimited number of
arguments.
I want to call another function with exactly the same arguments. I know
I can get the arguments in the arguments object, and as such also in an
array, but how do you pass the elements of an array to another function
as parameters?

Rewrite the function to take a single parameter which will be an Object
holding all the previous parameters. You can easily pass that Object in
the next call. Untested.

That should work in older browsers; subtler ways may only work in newer
ones.

That's not really possible as some of the functions I call may be
built-in functions.