delete/make invisible button?

[Geoff Cox]

Hello,

I have a button which I wish to be invisible at the end of an
application. How do delete it or simply make it invisible?

Cheers

Geoff

[Martin Honnen]

Re: delete/make invisible button?



Geoff Cox wrote:
[color=blue]
> I have a button which I wish to be invisible at the end of an
> application. How do delete it or simply make it invisible?[/color]

In the DOM as implemented in IE 5 and later, Mozilla, Netscape 6 and
later, Opera 7 and later and other modern browsers you can remove any
node by calling removeChild on its parent node e.g.
node.parentNode .removeChild(no de);
thus if you have a variable button with a reference to the button
element you can do
if (button.parentN ode && button.parentNo de.removeChild) {
button.parentNo de.removeChild( button);
}

--

Martin Honnen

http://JavaScript.FAQTs.com/

[Geoff Cox]

Re: delete/make invisible button?

On Sun, 04 Sep 2005 19:40:07 +0200, Martin Honnen <mahotrash@yaho o.de>
wrote:
[color=blue]
>
>
>Geoff Cox wrote:
>[color=green]
>> I have a button which I wish to be invisible at the end of an
>> application. How do delete it or simply make it invisible?[/color]
>
>In the DOM as implemented in IE 5 and later, Mozilla, Netscape 6 and
>later, Opera 7 and later and other modern browsers you can remove any
>node by calling removeChild on its parent node e.g.
> node.parentNode .removeChild(no de);
>thus if you have a variable button with a reference to the button
>element you can do
> if (button.parentN ode && button.parentNo de.removeChild) {
> button.parentNo de.removeChild( button);
> }[/color]

Martin,

Can you just explain how that would apply to my button which is
created as part of the creation of a table ..

document.write( "<input type='button' value='Next'
onclick='next_q uestion()' />");

After the "Next" button is clicked at the end of the exercise and the
results are emailed to me I would like the button to become invisible
so that the user is unable to press it again.

Cheers

Geoff

[Martin Honnen]

Re: delete/make invisible button?



Geoff Cox wrote:

[color=blue]
> Can you just explain how that would apply to my button which is
> created as part of the creation of a table ..
>
> document.write( "<input type='button' value='Next'
> onclick='next_q uestion()' />");[/color]

Well pass the button to your function e.g.

<input type="button" onclick="next_q uestion(this);"

and then in the function declaration you use a formal parameter

function next_question (button) {

and then wherever in the function you want to remove the button you use
the suggested code e.g.

if (button.parentN ode && button.parentNo de.removeChild) {
button.parentNo de.removeChild( button);
}

--

Martin Honnen

http://JavaScript.FAQTs.com/

[Geoff Cox]

Re: delete/make invisible button?

On Sun, 04 Sep 2005 20:36:59 +0200, Martin Honnen <mahotrash@yaho o.de>
wrote:
[color=blue]
>Well pass the button to your function e.g.
>
> <input type="button" onclick="next_q uestion(this);"
>
>and then in the function declaration you use a formal parameter
>
> function next_question (button) {
>
>and then wherever in the function you want to remove the button you use
>the suggested code e.g.
>
> if (button.parentN ode && button.parentNo de.removeChild) {
> button.parentNo de.removeChild( button);
> }[/color]

Martin,

Brilliant! Thanks that works fine - could you just say a word ot two
about the use of "this"?

Cheers

Geoff

[RobG]

Re: delete/make invisible button?

Geoff Cox wrote:
[...][color=blue]
>
> Martin,
>
> Brilliant! Thanks that works fine - could you just say a word ot two
> about the use of "this"?[/color]

I think Mike Winter gets it mostly spot on here:

<URL:http://groups.google.c om/group/comp.lang.javas cript/browse_frm/thread/9b041b9103b6de0 f/2065870c97d74b5 0?tvc=1&q=How+t o+understand+th e+javascript+cl ass+model%3F&hl =en#2065870c97d 74b50>



--
Rob

[Geoff Cox]

Re: delete/make invisible button?

On Mon, 05 Sep 2005 06:48:20 +1000, RobG <rgqld@iinet.ne t.au> wrote:
[color=blue]
>Geoff Cox wrote:
>[...][color=green]
>>
>> Martin,
>>
>> Brilliant! Thanks that works fine - could you just say a word ot two
>> about the use of "this"?[/color]
>
>I think Mike Winter gets it mostly spot on here:
>
><URL:http://groups.google.c om/group/comp.lang.javas cript/browse_frm/thread/9b041b9103b6de0 f/2065870c97d74b5 0?tvc=1&q=How+t o+understand+th e+javascript+cl ass+model%3F&hl =en#2065870c97d 74b50>[/color]


Thanks Rob - will follow up on this - by the way one of the longest
URL's I've seen!

How do you get the link to the posting?

Cheers

Geoff

[RobG]

Re: delete/make invisible button?

Geoff Cox wrote:[color=blue]
> On Mon, 05 Sep 2005 06:48:20 +1000, RobG <rgqld@iinet.ne t.au> wrote:
>
>[color=green]
>>Geoff Cox wrote:
>>[...]
>>[color=darkred]
>>>Martin,
>>>
>>>Brilliant! Thanks that works fine - could you just say a word ot two
>>>about the use of "this"?[/color]
>>
>>I think Mike Winter gets it mostly spot on here:
>>
>><URL:http://groups.google.c om/group/comp.lang.javas cript/browse_frm/thread/9b041b9103b6de0 f/2065870c97d74b5 0?tvc=1&q=How+t o+understand+th e+javascript+cl ass+model%3F&hl =en#2065870c97d 74b50>[/color]
>
>
>
> Thanks Rob - will follow up on this - by the way one of the longest
> URL's I've seen![/color]


Google groups links are long, but I think some references to MS
developer documentation are longer ;-)
[color=blue]
>
> How do you get the link to the posting?[/color]

Enclose the link in <URL: > and your news reader does the rest.

Incidentally, if you use '-- ' (that's dash dash space) on a line by
itself before your signature, those who reply to your posts with a
newsreader will have your signature automatically trimmed (which is
thought to be a good thing in general).


--
Rob