How to check if the same function name is already used in javascript

[Wootaek Choi]

Hi, everybody..

I try to make common debug function
that call in every js files used in a HTML..

but if same debug function name is defined in.... more than two javascrpt files,
it would cause trouble.

so, I want to check if the function name is used at first,
and then define debug function.
Is the anyway for this?

[Fox]

Re: How to check if the same function name is already used in javascript



Wootaek Choi wrote:[color=blue]
>
> Hi, everybody..
>
> I try to make common debug function
> that call in every js files used in a HTML..
>
> but if same debug function name is defined in.... more than two javascrpt files,
> it would cause trouble.
>
> so, I want to check if the function name is used at first,
> and then define debug function.
> Is the anyway for this?[/color]

if(!debug)
{
function
debug()
{
// whatever your code is...
}
}

[Andy Fish]

Re: How to check if the same function name is already used in javascript

I don't think it would actually cause any harm if you defined the function
twice. In javascript that's just like assigning a variable the same value it
already has.

as a matter of good practice I would use fox's suggestion though

"Fox" <fox@fxmahoney. com> wrote in message
news:3F408F23.4 B9BB92A@fxmahon ey.com...[color=blue]
>
>
> Wootaek Choi wrote:[color=green]
> >
> > Hi, everybody..
> >
> > I try to make common debug function
> > that call in every js files used in a HTML..
> >
> > but if same debug function name is defined in.... more than two[/color][/color]
javascrpt files,[color=blue][color=green]
> > it would cause trouble.
> >
> > so, I want to check if the function name is used at first,
> > and then define debug function.
> > Is the anyway for this?[/color]
>
> if(!debug)
> {
> function
> debug()
> {
> // whatever your code is...
> }
> }[/color]

[Lasse Reichstein Nielsen]

Re: How to check if the same function name is already used in javascript

Fox <fox@fxmahoney. com> writes:
[color=blue]
> if(!debug)
> {
> function
> debug()
> {
> // whatever your code is...
> }
> }[/color]

if the browser follows the ECMA specification, then that function is
not a function declaration, but a function expression. The name is then
only visible inside the function.

A lot of browsers don't, but that's not an excuse :)

This will be safer:
---
if (!debug) {
var debug = function() {
//code
};
}
---
/L
--
Lasse Reichstein Nielsen - lrn@hotpop.com
Art D'HTML: <URL:http://www.infimum.dk/HTML/randomArtSplit. html>
'Faith without judgement merely degrades the spirit divine.'