I went with this, there is probably a better way but this gets the job done.
$$('.check').each(function(elem) {
elem.observe('click', function(){
total=0;
$$('.check').each(function(element) {
if(element.checked==true) {
total++;
}
});
if (total > 4) elem.checked = false;
updateObject();
});
});
-----Original Message-----
From: prototype-scriptaculous@googlegroups.com
[mailto:prototype-scriptacul...@googlegroups.com] On Behalf Of Alex McAuley
Sent: Monday, September 14, 2009 11:11 AM
To: prototype-scriptaculous@googlegroups.com
Subject: [Proto-Scripty] Re: checkboxes
I use...
$$('.class').each(function(element) {
if(element.checked==true) {
// do somehting with the element or its value
}
});
there might be a better way
Alex Mcauley
http://www.thevacancymarket.com
----- Original Message -----
From: "Richard Quadling" <rquadl...@googlemail.com>
To: <prototype-scriptaculous@googlegroups.com>
Sent: Monday, September 14, 2009 4:52 PM
Subject: [Proto-Scripty] Re: checkboxes
2009/9/14 Russell Keith <russell.ke...@aacreditunion.org>:
> I have the following code that works just fine. I can’t figure out how to
> tell how many check boxes are checked. I want to limit it to four check
> boxes. Any help would be appreciated, or even a point in the right
> direction.
>
>
>
> $$('input.check').each(function(elem){
>
> elem.observe('click', function(){
>
> alert(elem.id);
>
> });
>
> });
>
> >
>
I have a similar process.
My solution was to put the <input type="checkbox"> into a <div id="cb_div">
I then use ...
$('cb_div').observe('click', function(ev){
if (4 == $$('cb_div input[type="checkbox"][checked="checked"]').length) {
ev.stop();
return false;
}
});
sort of thing.
Basically use a selector to find the number of checked checkboxes
inside the div holding the checkboxes. If this number is equal to or
greater than 4, then don't bubble the event / ignore the event.
If it is less than 4, then do nothing as the event will bubble and the
checkbox will get its click.
--
-----
Richard Quadling
"Standing on the shoulders of some very clever giants!"
EE : http://www.experts-exchange.com/M_248814.html
Zend Certified Engineer : http://zend.com/zce.php?c=ZEND002498&r=213474731
ZOPA : http://uk.zopa.com/member/RQuadling
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