«

I have a form which contains amongst other code:


<form action="" name="diagform" id="diagform">
<input name="answer" type="hidden" id="q1" value="">
<input name="answer" type="hidden" id="q2" value="">
<input name="answer" type="hidden" id="q3" value="">
........
<input name="answer" type="hidden" id="q9" value="">
<form>

and I have the following javascript function:

function SetAnswer(quest,ans) {
var quest,ans;
document.diagform.answer[quest].value=quest+'.'+ans;
}


This works as I expect it, that is to say that when SetAnswer is called as
SetAnswer(q1,1) the value of answer gets set to 1 for the first hidden
field,etc.

However when the form is submitted I want all the values of answer to be in
an array for processing in PHP.

To do that I have to change the input names to "answer[]".

I can't now work out how to set the value of that element using javascript.

Anyone got any ideas?

David Groom wrote:
> I have a form which contains amongst other code:
>
>
> <form action="" name="diagform" id="diagform">
> <input name="answer" type="hidden" id="q1" value="">
> <input name="answer" type="hidden" id="q2" value="">
> <input name="answer" type="hidden" id="q3" value="">
> .......
> <input name="answer" type="hidden" id="q9" value="">
> <form>
>
> and I have the following javascript function:
>
> function SetAnswer(quest,ans) {
> var quest,ans;
> document.diagform.answer[quest].value=quest+'.'+ans;
> }
>
>
> This works as I expect it, that is to say that when SetAnswer is
> called as SetAnswer(q1,1) the value of answer gets set to 1 for the
> first hidden field,etc.
>
> However when the form is submitted I want all the values of answer to
> be in an array for processing in PHP.
>
> To do that I have to change the input names to "answer[]".
>
> I can't now work out how to set the value of that element using
> javascript.
>
> Anyone got any ideas?

Instead of form.answer[] (which wouldn't work, use form['answer[]'].

Berislav

On Mon, 22 Nov 2004 13:38:45 +0100, Berislav Lopac
<> wrote:

> David Groom wrote:

[snip]

>> function SetAnswer(quest,ans) {
>> var quest,ans;

Delete that statement. The arguments, quest and ans, are already local
variables.

>> document.diagform.answer[quest].value=quest+'.'+ans;

So you append the answer after the identifier of the question?

>> }
>>
>> This works as I expect it, that is to say that when SetAnswer is called
>> as SetAnswer(q1,1)

I assume you mean

SetAnswer('q1', '1') or SetAnswer('q1', 1)

[snip]

>> [...] I have to change the input names to "answer[]".

[snip]

>> Anyone got any ideas?
>
> Instead of form.answer[] (which wouldn't work, use form['answer[]'].

formObj.elements['answer[]']

would be better, however, you can reference the controls directly via
their id:

function setAnswer(q, a) {
document.forms['diagform'].elements[q].value = q + '.' + a;
}

Mike

--
Michael Winter
Replace ".invalid" with ".uk" to reply by e-mail.

Mike
Many thanks, just what I was looking for.

David


"Michael Winter" <> wrote in message
newspshvbhvrnx13kvk@atlantis...
> On Mon, 22 Nov 2004 13:38:45 +0100, Berislav Lopac
> <> wrote:
>
> > David Groom wrote:
>
> [snip]
>
> >> function SetAnswer(quest,ans) {
> >> var quest,ans;
>
> Delete that statement. The arguments, quest and ans, are already local
> variables.
>
> >> document.diagform.answer[quest].value=quest+'.'+ans;
>
> So you append the answer after the identifier of the question?
>
> >> }
> >>
> >> This works as I expect it, that is to say that when SetAnswer is called
> >> as SetAnswer(q1,1)
>
> I assume you mean
>
> SetAnswer('q1', '1') or SetAnswer('q1', 1)
>
> [snip]
>
> >> [...] I have to change the input names to "answer[]".
>
> [snip]
>
> >> Anyone got any ideas?
> >
> > Instead of form.answer[] (which wouldn't work, use form['answer[]'].
>
> formObj.elements['answer[]']
>
> would be better, however, you can reference the controls directly via
> their id:
>
> function setAnswer(q, a) {
> document.forms['diagform'].elements[q].value = q + '.' + a;
> }
>
> Mike
>
> --
> Michael Winter
> Replace ".invalid" with ".uk" to reply by e-mail.