help to using array checkbox in javascript

[zelot1980]

Hi, All
I have a form which contains an array checkboxes. Examples:

<form method ="post" name="form1" id="form1">
<input type="checkbox" name="object[]" id="object[]" value="1">
<input type="checkbox" name="object[]" id="object[]" value="2">
</form>

I using PHP get value of array checkboxes. However, I want to check data of array checkboxes
by javascript. Example:

<script language="jscript">
function CheckData() {
var Form1 = document.forms['form1'].object
var ok = 0
for (i=0;i<Form1.object.length;i++)
{
if (Form1.object.checked) ok = 1
return true
}

if ( ok==0) {
	alert("Data invalid")
	return false
}	

}
</script>

Javascript desn't understand the [] at the end of the name's checkbox.
Javascript errors "object.length is null or not an object". Unfortunately I need the [] there as they are to be processed by some php when I submit the form.

Thanks for all your help

[snascendi]

try to use name="object[]" id="obj" and use the id (obj) in all javascript processing. it seems that to javascript it is an array.

enjoy.