eval(function) doesn't work on IE

[Andrew]

I need to call a function inside another function, but I don't know the
function name.
I solved in this way:

function x (newFunc)
{
eval(newFunc+ "()");
}

Again this work for Firefox and other browser, but not in IE. Any idea
on how to solve this?

Thanks
Andrew

[web.dev]

Andrew wrote:

I need to call a function inside another function, but I don't know the
function name.
I solved in this way:

function x (newFunc)
{
eval(newFunc+ "()");
}

Again this work for Firefox and other browser, but not in IE. Any idea
on how to solve this?

Your use of eval is completely unnecessary. If you are passing a
reference to your function, you may invoke it directly. For example:

function x(fnc_ref)
{
fnc_ref();
}

function y()
{
//...etc.
}

x(y);

[Dr J R Stockton]

In comp.lang.javascript message
<11*********************@l12g2000cwl.googlegroups. com>, Tue, 12 Dec 2006
14:42:10, web.dev <we********@gmail.comwrote:

If you are passing a
reference to your function, you may invoke it directly. For example:

function x(fnc_ref)
{
fnc_ref();
}

And if you need the name of the current fnc_ref within function x,
Str = fnc_ref.toString().match(/function\s+(\w+)\W/)[1]
will do it for reasonably-named functions in at least some browsers.

For the general case, improve the RegExp.
Query : is there nowadays a respectable means XXXX of getting a
reference to a function given only its name ?

e.g. ISNAN == XXXX("isNaN")

Of course, XXXX being eval should do it; could that be deemed an
acceptable use, or is there a more specific alternative?

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

--
(c) John Stockton, Surrey, UK. ?@merlyn.demon.co.uk Turnpike v6.05 IE 6
<URL:http://www.jibbering.com/faq/ Old RC FAQ of news:comp.lang.javascript
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[Randy Webb]

Dr J R Stockton said the following on 12/13/2006 1:10 PM:

In comp.lang.javascript message
<11*********************@l12g2000cwl.googlegroups. com>, Tue, 12 Dec 2006
14:42:10, web.dev <we********@gmail.comwrote:

> If you are passing a
reference to your function, you may invoke it directly. For example:

function x(fnc_ref)
{
fnc_ref();
}

And if you need the name of the current fnc_ref within function x,
Str = fnc_ref.toString().match(/function\s+(\w+)\W/)[1]
will do it for reasonably-named functions in at least some browsers.

For the general case, improve the RegExp.
Query : is there nowadays a respectable means XXXX of getting a
reference to a function given only its name ?

e.g. ISNAN == XXXX("isNaN")

Of course, XXXX being eval should do it; could that be deemed an
acceptable use, or is there a more specific alternative?

If XXXX is a function name defined like any other, then window['XXXX']()
will call that function.

--
Randy
Chance Favors The Prepared Mind
comp.lang.javascript FAQ - http://jibbering.com/faq
Javascript Best Practices - http://www.JavascriptToolbox.com/bestpractices/