checkboxes php & javascript

[john]

hi
I am generating a set of dynamic checkboxes via php.
I have to check that the uer should atleast check one checkbox. When
there are more then 1 checkbox my javascript works but if there is
only one check box then my javascript doesnt works. My code is
<script>
function deletecheck()
{

for (i=0;i<document .form.elements['projectChecked[]'].length;i++)
{ if(document.for m.elements['projectChecked[]'][i].checked==true)
{
return true;
}
}
alert ("Please select a project to delete");
return false;
}
</script>
<form ......onsubmit= 'return deletecheck();' >
<?php
foreach(.....)
{
echo "<input type='checkbox' name='projectCh ecked[]'
value='".$proje ctName."' >";
}
?>

[Janwillem Borleffs]

Re: checkboxes php &amp; javascript

john wrote:[color=blue]
> I am generating a set of dynamic checkboxes via php.
> I have to check that the uer should atleast check one checkbox. When
> there are more then 1 checkbox my javascript works but if there is
> only one check box then my javascript doesnt works. My code is[/color]

The question is unrelated to php, but since the answer is simple:

function deletecheck() {
var pjc = document.form.e lements['projectChecked[]'];
var returnVal = false;

if (!pjc.length) {
returnVal = pjc.checked;
} else {
for (i=0; i<pjc.length && !returnVal; i++) {
returnVal = pjc[i].checked;
}
}
if (!returnVal) alert ("Please select a project to delete");
return returnVal;
}

BTW, never rely on JavaScript. Always back it up with server-side
validation.


JW

[john]

Re: checkboxes php &amp; javascript

Thanks a lot

"Janwillem Borleffs" <jw@jwscripts.c om> wrote in message news:<40fed50c$ 0$1746$abc4f4c3 @news.wanadoo.n l>...[color=blue]
> john wrote:[color=green]
> > I am generating a set of dynamic checkboxes via php.
> > I have to check that the uer should atleast check one checkbox. When
> > there are more then 1 checkbox my javascript works but if there is
> > only one check box then my javascript doesnt works. My code is[/color]
>
> The question is unrelated to php, but since the answer is simple:
>
> function deletecheck() {
> var pjc = document.form.e lements['projectChecked[]'];
> var returnVal = false;
>
> if (!pjc.length) {
> returnVal = pjc.checked;
> } else {
> for (i=0; i<pjc.length && !returnVal; i++) {
> returnVal = pjc[i].checked;
> }
> }
> if (!returnVal) alert ("Please select a project to delete");
> return returnVal;
> }
>
> BTW, never rely on JavaScript. Always back it up with server-side
> validation.
>
>
> JW[/color]