using var syntax problem

**MikeB** · Jul 20 '05, 01:07 PM

Re: using var syntax problem

<script language="jscri pt">
function fnSelectOption( fieldname)
{
// mainform is referenced in the forms collection and
// fieldname is referenced by name as a form element.
document.forms( "mainform")(fie ldname).value = "value";
}

</script>
</head>

<body>
<form name="mainform" >
<input type="text" name="text1" width="22">
<input type="button" value="Click Me" onclick="fnSele ctOption('text1 ')";>

</form>

</body>

"DakotaCom" <jcalhoun@river valleyit.com> wrote in message news:3fef6848_3 @corp.newsgroup s.com...[color=blue]
> Hi All,
>
> Newbie here needing some syntax assistance. Here is the code:
>
> function fnSelectOption( fieldname)
> {
> document.mainfo rm. + fieldname + .value = "value";
> }
>
> It obvliously bombs where I am trying to ref the param "fieldname" . I
> realize it is a simple syntax issue but I cannot seem to figure it out. Any
> help is greatly appreicated.
>
> JC
>
>
>
>
> -----= Posted via Newsfeeds.Com, Uncensored Usenet News =-----
> http://www.newsfeeds.com - The #1 Newsgroup Service in the World!
> -----== Over 100,000 Newsgroups - 19 Different Servers! =-----[/color]

**Janwillem Borleffs** · Jul 20 '05, 01:07 PM

Re: using var syntax problem

MikeB wrote:[color=blue]
> <script language="jscri pt">[/color]

No need for jscript here, just use:
<script type="text/javascript">
[color=blue]
> function fnSelectOption( fieldname)
> {
> // mainform is referenced in the forms collection and
> // fieldname is referenced by name as a form element.
> document.forms( "mainform")(fie ldname).value = "value";
> }
>[/color]

This should be:
document.forms["mainform"][fieldname].value = "value";

(document.forms is not a function and you will get errors in other browsers
than IE)

JW

**Richard Cornford** · Jul 20 '05, 01:07 PM

Re: using var syntax problem

"MikeB" <m.byerleyATVer izonDottieNetti e> wrote in message
news:R8WdnVfFC5 TW83KiRVn-vw@comcast.com. ..[color=blue]
> <script language="jscri pt">
> function fnSelectOption( fieldname)
> {
> // mainform is referenced in the forms collection and
> // fieldname is referenced by name as a form element.
> document.forms( "mainform")(fie ldname).value = "value";
> }[/color]
<snip>

An obvious alternative to using IE specific code and shielding it form
non-IE browsers is by specifying the language attribute as jscript would
be to use the standard javascript/ECMA Script square bracket notation
property accessor syntax. Which is also fully supported by JScript:-

document.forms['mainform'][fieldname].value = "value";
-or-
document.forms['mainform'].elements[fieldname].value = "value";
-or-
document.forms. mainform.elemen ts[fieldname].value = "value";

<URL: http://www.jibbering.com/faq/#FAQ4_39 >

Richard.

**DakotaCom** · Jul 20 '05, 01:07 PM

Re: using var syntax problem

Thanks for the reponses! This seems to work for what I need, it also seems
to be the cleanest:

document.mainfo rm[fieldname].value = "value";

JC

"MikeB" <m.byerleyATVer izonDottieNetti e> wrote in message
news:R8WdnVfFC5 TW83KiRVn-vw@comcast.com. ..[color=blue]
> <script language="jscri pt">
> function fnSelectOption( fieldname)
> {
> // mainform is referenced in the forms collection and
> // fieldname is referenced by name as a form element.
> document.forms( "mainform")(fie ldname).value = "value";
> }
>
> </script>
> </head>
>
> <body>
> <form name="mainform" >
> <input type="text" name="text1" width="22">
> <input type="button" value="Click Me" onclick="fnSele ctOption('text1 ')";>
>
>
> </form>
>
> </body>
>
>
>
> "DakotaCom" <jcalhoun@river valleyit.com> wrote in message[/color]
news:3fef6848_3 @corp.newsgroup s.com...[color=blue][color=green]
> > Hi All,
> >
> > Newbie here needing some syntax assistance. Here is the code:
> >
> > function fnSelectOption( fieldname)
> > {
> > document.mainfo rm. + fieldname + .value = "value";
> > }
> >
> > It obvliously bombs where I am trying to ref the param "fieldname" . I
> > realize it is a simple syntax issue but I cannot seem to figure it out.[/color][/color]
Any[color=blue][color=green]
> > help is greatly appreicated.
> >
> > JC
> >
> >
> >
> >
> > -----= Posted via Newsfeeds.Com, Uncensored Usenet News =-----
> > http://www.newsfeeds.com - The #1 Newsgroup Service in the World!
> > -----== Over 100,000 Newsgroups - 19 Different Servers! =-----[/color]
>
>[/color]

-----= Posted via Newsfeeds.Com, Uncensored Usenet News =-----
http://www.newsfeeds.com - The #1 Newsgroup Service in the World!
-----== Over 100,000 Newsgroups - 19 Different Servers! =-----

**DakotaCom** · Jul 20 '05, 01:07 PM

Re: using var syntax problem

Thanks for the reponses! This seems to work for what I need, it also seems
to be the cleanest:

document.mainfo rm[fieldname].value = "value";

JC

"MikeB" <m.byerleyATVer izonDottieNetti e> wrote in message
news:R8WdnVfFC5 TW83KiRVn-vw@comcast.com. ..[color=blue]
> <script language="jscri pt">
> function fnSelectOption( fieldname)
> {
> // mainform is referenced in the forms collection and
> // fieldname is referenced by name as a form element.
> document.forms( "mainform")(fie ldname).value = "value";
> }
>
> </script>
> </head>
>
> <body>
> <form name="mainform" >
> <input type="text" name="text1" width="22">
> <input type="button" value="Click Me" onclick="fnSele ctOption('text1 ')";>
>
>
> </form>
>
> </body>
>
>
>
> "DakotaCom" <jcalhoun@river valleyit.com> wrote in message[/color]
news:3fef6848_3 @corp.newsgroup s.com...[color=blue][color=green]
> > Hi All,
> >
> > Newbie here needing some syntax assistance. Here is the code:
> >
> > function fnSelectOption( fieldname)
> > {
> > document.mainfo rm. + fieldname + .value = "value";
> > }
> >
> > It obvliously bombs where I am trying to ref the param "fieldname" . I
> > realize it is a simple syntax issue but I cannot seem to figure it out.[/color][/color]
Any[color=blue][color=green]
> > help is greatly appreicated.
> >
> > JC
> >
> >
> >
> >
> > -----= Posted via Newsfeeds.Com, Uncensored Usenet News =-----
> > http://www.newsfeeds.com - The #1 Newsgroup Service in the World!
> > -----== Over 100,000 Newsgroups - 19 Different Servers! =-----[/color]
>
>[/color]

-----= Posted via Newsfeeds.Com, Uncensored Usenet News =-----
http://www.newsfeeds.com - The #1 Newsgroup Service in the World!
-----== Over 100,000 Newsgroups - 19 Different Servers! =-----

**Lasse Reichstein Nielsen** · Jul 20 '05, 01:07 PM

Re: using var syntax problem

"DakotaCom" <jcalhoun@river valleyit.com> writes:

Please don't top post, or at least trim your quotes.
[color=blue]
> Thanks for the reponses! This seems to work for what I need, it also seems
> to be the cleanest:
>
> document.mainfo rm[fieldname].value = "value";[/color]

"*Seems* to work" is correct, at least for the browser you used.
It fails in, e.g., Mozilla/Netscape, because they don't make the form
a property of the document element.

Use
document.forms['mainform'] (or the equivalent: document.forms. mainform)
instead of just
document.mainfo rm
That is the minimum you can write that works in all Javascript enabled
browsers.

Personally I prefer to use the "elements" collection, so it is
document.forms['mainform'].elements[fieldname].value = "value"
I think it is most consistent.

/L
--
Lasse Reichstein Nielsen - lrn@hotpop.com
DHTML Death Colors: <URL:http://www.infimum.dk/HTML/rasterTriangleD OM.html>
'Faith without judgement merely degrades the spirit divine.'

**MikeB** · Jul 20 '05, 01:08 PM

Re: using var syntax problem

How come you guys always answer AFTER you've had your coffee.... ;-)

"Richard Cornford" <Richard@litote s.demon.co.uk> wrote in message
news:bsnsb9$84o $1$8300dec7@new s.demon.co.uk.. .[color=blue]
> "MikeB" <m.byerleyATVer izonDottieNetti e> wrote in message
> news:R8WdnVfFC5 TW83KiRVn-vw@comcast.com. ..[color=green]
> > <script language="jscri pt">
> > function fnSelectOption( fieldname)
> > {
> > // mainform is referenced in the forms collection and
> > // fieldname is referenced by name as a form element.
> > document.forms( "mainform")(fie ldname).value = "value";
> > }[/color]
> <snip>
>
> An obvious alternative to using IE specific code and shielding it form
> non-IE browsers is by specifying the language attribute as jscript would
> be to use the standard javascript/ECMA Script square bracket notation
> property accessor syntax. Which is also fully supported by JScript:-
>
> document.forms['mainform'][fieldname].value = "value";
> -or-
> document.forms['mainform'].elements[fieldname].value = "value";
> -or-
> document.forms. mainform.elemen ts[fieldname].value = "value";
>
> <URL: http://www.jibbering.com/faq/#FAQ4_39 >
>
> Richard.
>
>[/color]

**Thomas 'PointedEars' Lahn** · Jul 20 '05, 01:27 PM

Re: using var syntax problem

Lasse Reichstein Nielsen wrote:
[color=blue]
> "DakotaCom" <jcalhoun@river valleyit.com> writes:[color=green]
>> Thanks for the reponses! This seems to work for what I need, it also seems
>> to be the cleanest:
>>
>> document.mainfo rm[fieldname].value = "value";[/color]
>
> "*Seems* to work" is correct, at least for the browser you used.
> It fails in, e.g., Mozilla/Netscape, because they don't make the form
> a property of the document element.[/color]

WFM in Mozilla/5.0 (Windows; U; Windows NT 5.0; en-US; rv:1.7a)
Gecko/2004010908.

But I agree to the rest of your statements because of
[color=blue]
> [example using document.forms]
> That is the minimum you can write that works in all Javascript enabled
> browsers.
> [...][/color]

PointedEars

**Lasse Reichstein Nielsen** · Jul 20 '05, 01:27 PM

Re: using var syntax problem

Thomas 'PointedEars' Lahn <PointedEars@we b.de> writes:
[color=blue]
> WFM in Mozilla/5.0 (Windows; U; Windows NT 5.0; en-US; rv:1.7a)
> Gecko/2004010908.[/color]

Mozilla makes the form a property of the document if it is named using
the name attribute, and not if it is named only using the id attribute.
In the example I used (as most of the code I write) I only used id.

/L
--
Lasse Reichstein Nielsen - lrn@hotpop.com
DHTML Death Colors: <URL:http://www.infimum.dk/HTML/rasterTriangleD OM.html>
'Faith without judgement merely degrades the spirit divine.'

**Thomas 'PointedEars' Lahn** · Jul 20 '05, 01:27 PM

Re: using var syntax problem

Lasse Reichstein Nielsen wrote:
[color=blue]
> Thomas 'PointedEars' Lahn <PointedEars@we b.de> writes:[color=green]
>> WFM in Mozilla/5.0 (Windows; U; Windows NT 5.0; en-US; rv:1.7a)
>> Gecko/2004010908.[/color]
>
> Mozilla makes the form a property of the document if it is named using
> the name attribute, and not if it is named only using the id attribute.[/color]

True. Interestingly, it makes form elements a property of the form
object even if only the ID attribute is used.
[color=blue]
> In the example I used (as most of the code I write) I only used id.[/color]

You know, my magic Crystal Ball[tm] is still on holiday :)

Besides, you know that you become incompatible with older browsers
when using only the ID attribute for naming elememts but also access
them through collections/arrays?

PointedEars

using var syntax problem

using var syntax problem

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