using javascript in the onchange event

[mantrid]

Im trying to get a tick box to tick automatically when the user changes the
textfield called comm. my code is below but it doesnt work.
Can anyone see why?
function changed(x)
{
document.getElementById(x).checked;
}

<input name="changed" id="ischanged" type="checkbox" value="">

<textarea name="comm[]" rows="2" class="BodyText" style="WIDTH: 99%"
onChange="changed(ischanged)"><?php echo stripslashes($comment);
?></textarea>

thanks
Ian

[Evertjan.]

mantrid wrote on 07 aug 2006 in comp.lang.javascript:

Im trying to get a tick box to tick automatically when the user
changes the textfield called comm. my code is below but it doesnt
work. Can anyone see why?
function changed(x)
{
document.getElementById(x).checked;
}

<input name="changed" id="ischanged" type="checkbox" value="">

<textarea name="comm[]" rows="2" class="BodyText" style="WIDTH: 99%"
onChange="changed(ischanged)"><?php echo stripslashes($comment);
?></textarea>

onChange="changed('ischanged')"
--
Evertjan.
The Netherlands.
(Please change the x'es to dots in my emailaddress)

[RobG]

Evertjan. wrote:

mantrid wrote on 07 aug 2006 in comp.lang.javascript:

Im trying to get a tick box to tick automatically when the user
changes the textfield called comm. my code is below but it doesnt
work. Can anyone see why?
function changed(x)
{
document.getElementById(x).checked;

That just returns the value of the checked property, it doesn't set it
to anything:

document.getElementById(x).checked = true;

}

<input name="changed" id="ischanged" type="checkbox" value="">

<textarea name="comm[]" rows="2" class="BodyText" style="WIDTH: 99%"
onChange="changed(ischanged)"><?php echo stripslashes($comment);
?></textarea>

onChange="changed('ischanged')"

--
Rob

[mantrid]

Thanks to both of you
It now works with the two changes you suggested

"RobG" <rg***@iinet.net.auwrote in message
news:11**********************@h48g2000cwc.googlegr oups.com...

>
Evertjan. wrote:

mantrid wrote on 07 aug 2006 in comp.lang.javascript:

Im trying to get a tick box to tick automatically when the user
changes the textfield called comm. my code is below but it doesnt
work. Can anyone see why?
>
>
function changed(x)
{
document.getElementById(x).checked;

That just returns the value of the checked property, it doesn't set it
to anything:

document.getElementById(x).checked = true;

>}
>
<input name="changed" id="ischanged" type="checkbox" value="">
>
<textarea name="comm[]" rows="2" class="BodyText" style="WIDTH: 99%"
onChange="changed(ischanged)"><?php echo stripslashes($comment);
?></textarea>

onChange="changed('ischanged')"

--
Rob

[Dr John Stockton]

JRS: In article <tF*******************@newsfe4-gui.ntli.net>, dated
Mon, 7 Aug 2006 20:47:21 remote, seen in news:comp.lang.javascript,
mantrid <ia********@virgin.netposted :

>Im trying to get a tick box to tick automatically when the user changes the
textfield called comm. my code is below but it doesnt work.
Can anyone see why?
function changed(x)
{

You should put alert(999) here. Then you will discover whether your
function gets called. For me at least, it does. Therefore your error
must concern the following line :-

>document.getElementById(x).checked;

So change that, /pro tem/, to
var T = document.getElementById(x)
alert(typeof T)
T.checked;

and you should see that the value of T depends reasonably on whether you
give the name of the checkbox or a non-existent name. Then look up
<CHECKBOX>.checked and see that you are not using it appropriately.

>}

<input name="changed" id="ischanged" type="checkbox" value="">

<textarea name="comm[]" rows="2" class="BodyText" style="WIDTH: 99%"
onChange="changed(ischanged)"><?php echo stripslashes($comment);
?></textarea>

It's not a good ides to have a function with the same name as a control.
Even if the browser is not confused, some reader may be.
Read the newsgroup FAQ.
--
© John Stockton, Surrey, UK. ?@merlyn.demon.co.uk Turnpike v4.00 IE 4 ©
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