checkboxes for PHP and Javascript

jorgepinho

I have a form with several checkboxes, for PHP to catch them we have to use:
name="name[]"
name="name[]"
name="name[]"
.....

but then, I also want to controle them with javascript, and that causes errors..

how do I workaround ?

Thankx

trexx

what exactly do you wanna do with them? and what error do you get? =) please post the JS-code and the required HTML.

jorgepinho

(sorry my english !!)

ok...

here goes the problem with more detail

In the attached file (which is pure HTML with Javascript) there are
several checkboxes, they are for PHP use in the action page, but also, I want to controle them with javascript (see the buttons bellow on page) to allow fast-selection (sometimes there are 50 checkboxes)

when I click "Clear" there is an error of "not an object" on "invalid syntax"

Any help ?

Thankx

trexx

try this:

<?php
print_r( $_POST['item'] );
?>
<html>
	<head>
		<script>
		function clearBoxes()
		{
			for( i=0; i < document.forms[0].elements.length; i++ )
			{
				obj = document.forms[0].elements[i];
				if( obj.type == 'checkbox' )
				{
					obj.checked = false;	
				}
			}	
		}
		</script>
	</head>
	<body>
	<form action="test.php" method="post">
		<input type="checkbox" name="chkbox[0]" value="0">
		<input type="checkbox" name="chkbox[1]" value="1">
		<input type="button" value="clear" onClick="clearBoxes();">
		<input type="submit">
	</form>
	</body>
</html>

jorgepinho

A +

😃

it works fine !!!