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Message-ID: <1768275.D2KPVSPYKU@PointedEars.de>
From: Thomas 'PointedEars' Lahn <PointedEars@web.de>
Reply-To: Thomas 'PointedEars' Lahn <cljs@PointedEars.de>
Organization: PointedEars Software (PES)
Date: Mon, 17 Oct 2011 14:32:20 +0200
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Subject: Re: Syntax for resetting radio button to initial value?
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Denis McMahon wrote:

> On Sun, 16 Oct 2011 23:16:48 +0200, Garry Jones wrote:
>> I have a reset function for a user form which clears text fields, resets
>> drop down boxes to initial values and moves focus to first input field.
>> However I need to reset radio buttons to their inital value (of zero).
> 
> Radio buttons shouldn't have an initial value of zero.

What would be the reason for that?
 
> A radio group is a group of buttons of which one and only one is
> selected. This is the default option for the group, and should be marked
> as such, eg:
> 
> <form>
> <input type="radio" value="1" name="music"> Classical<br>
> <input type="radio" value="2" name="music"> Jazz<br>
> <input type="radio" value="3" name="music" checked="checked"> Rock<br>
> <input type="submit"><input type="reset">
> </form>

That's HTML5 at most.  But imagine what would happen if you simply omitted 
the `checked' attribute.  It's optional, you know.
 
BTW, including a reset button in a form is almost always a stupid idea:
<http://www.useit.com/alertbox/20000416.html>

> If I don't want the default option to be visible for a radio button set,
> what I usually do is something like this:
> 
> <form>
> <input type="radio" value="0" name="music" checked="checked"
> style="display:none">
> <input type="radio" value="1" name="music"> Classical<br>
> <input type="radio" value="2" name="music"> Jazz<br>
> <input type="radio" value="3" name="music"> Rock<br>
> <input type="submit"><input type="reset">
> </form>
> 
> Now a value of "0" means "none of the visible options was selected".

Works great with and without CSS.  NOT.  It's complete utter nonsense; don't 
*ever* do this.  If you don't pre-check any radiobutton of a radiobutton 
group, it will not be part of the request.  There is absolutely no need
to transmit a "hidden" default value for a radiobutton group.

Not that this code would have *anything* to do with the OP's question.
 
> It may be that the latter is a solution to your problem too.

It does not even address the problem.  Would you *please* get a minimum clue 
before making suggestions.


PointedEars
-- 
    realism:    HTML 4.01 Strict
    evangelism: XHTML 1.0 Strict
    madness:    XHTML 1.1 as application/xhtml+xml
                                                    -- Bjoern Hoehrmann