Question: probably basic one

Simple overview:
I want to call a function in a javascript duntion where the name of the
called function is an argument value passed into the javascript function.

Here is what I want:

On the html pages:
page1: onclick="A('a', 'C')"

In the library:
function A(x, B) { y=...do stuff...; B(y);}

function C(x) {...}


Currently, I have A call a function D which has a switch statement to
call the proper C function. How can I have A call C directly using the
passed in name of C?

re: Question: probably basic one

sheldonlg wrote:Functions are first class objects so don't pass a function name in, pass
the function itself in e.g.
<div onclick="A('a', C);">
then you can simply use
function A(x, F) { y = ...; F(y); }

--

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

re: Question: probably basic one

Martin Honnen wrote:You mean simply leave off the quotes in the initial call is all I have
to do?

re: Question: probably basic one

sheldonlg wrote:
Yes, you can do that to pass the function as an argument to the other
function.


--

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

re: Question: probably basic one

In comp.lang.javascript message <48b572c9$0$12953$9b4e6d93@newsspool2.ar
cor-online.net>, Wed, 27 Aug 2008 17:29:13, Martin Honnen
<mahotrash@yahoo.deposted:For those who really do want to pass in the name of the function as a
string (as originally asked), the notation shown by

window["LZ"](5)

is available; for me, that returns '05'. No doubt someone will comment
if that method is not always available.

If the function is frequently needed, consider :

Fn = window["LZ"]
Fn(5) + Fn(6) // gives '0506'

If, having received a function itself, one wants the name. one can
generally get it by a RegExp match on Fn.toString() ; js-nclds.htm .

It's a good idea to read the newsgroup c.l.j and its FAQ. See below.

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news:comp.lang.javascript FAQ <URL:http://www.jibbering.com/faq/index.html>.
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re: Question: probably basic one

Dr J R Stockton wrote:I only asked about the name because that is what I thought I had to do.
However, what I want is more like;

onclick="getValues(p1, p2, postGetValues)";

function getValues(x, y, z) {
....gets w...
otherFunction(w, z);
}

funtion otherFunction(a, z) {
....gets b....
z(b);
}

postGetValues(x) {
...process x which gets its value from otherFunction...
}

As I understood mahotrash, this is what he meant and this is what I
wanted. The idea being that all I need write is the initially invoked
function (getValues) and the post-processing function (postGetValues),
eliminating the need for altering a third middle function which has a
switch statement to navigate properly.

re: Question: probably basic one

Dr J R Stockton wrote on 27 aug 2008 in comp.lang.javascript:
.... gives interesting be it not very useful possibilities
for batchwize assigning of functions:

<script type='text/javascript'>

var weekDay = 'x/Su/Mo/Tu/We/Th/Fr/Sa'.split('/');

for(var i=1;i<8;i++) {
window[weekDay[i]] = function(){return 'It's raining again'};
};

alert (Th());

</script>

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Evertjan.
The Netherlands.
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