Checkbox Array

[aparth]

Hi, I'm having a problem simply putting the values of selected checkboxes into an array using javascript.

The list of checkboxes is dynamically created so I need to count number of checkboxes in order to cycle through them. Also the value of these checkboxes is not 1,2,3,4,5. They are non-sequential id numbers.

[PHP] function update(chkbox_name)
{
var ids = new Array();
var count = 0;
for(var i=0; i < chkbox_name.length; i++)
{
if (chkbox_name[i].checked)
{
ids[count] = chkbox_name[i].value;
count = count++;
}
}
}

[/PHP]

The function is called here:
[PHP]onchange='update(this.form.group_chk);'[/PHP]

And this is the checkbox part of the form that is within a while loop (cycles through all selected group_ids which are not in numerical order):
[PHP]<input name="group_chk[]" type="checkbox" value="<?echo $group_id;?>" />[/PHP]

Can anyone give me a hand? thanks

[Banfa]

I suspect this is not correct

[php]
<input name="group_chk[]" type="checkbox" value="<?echo $group_id;?>" />
[/php]

I'd try

[php]
<input name="group_chk" type="checkbox" value="<?echo $group_id;?>" />
[/php]

[aparth]

thanks mate it worked!

i remember reading a tutorial that said without the [] checkboxes won't work....so many mixed messages on the web

cheers

[acoder]

Checkbox arrays are usually required for a server-side language, e.g. PHP. This can also be used with JavaScript by using the form elements array or document.getElementsByName(), e.g.

onchange='update(this.form.elements["group_chk[]"]);'