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checkbox calculating - in php form

Discussion in 'PHP' started by Lucy, Apr 15, 2007.

0
  1. #1
    Hi,

    Was hoping someone out there could help with this problem.

    I have creating a form with an array of 7 checkboxes.

    I am trying to write a script that will calculate a cost of $1 for every checkbox chosen.

    Please help! :)
     
    Lucy, Apr 15, 2007 IP
  2. Subikar

    Subikar Active Member

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    #2
    Do you want it in php if yes then while checking each check box just submit the form and update it.

    This code may too some extend help you :

    Any more help needed always welcome :)
     
    Subikar, Apr 15, 2007 IP
  3. krakjoe

    krakjoe Well-Known Member

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    #3 
    
<html>
<head></head>
<!-- I am a free download : http://www.prototypejs.org/download -->
<script language="javascript" src="prototype.js"></script>
<!-- I am some simple prototype usage -->
<script language="javascript">
	function calculate(  )
	{
		var rets = 0;
		var data = $('mainform').getInputs( 'checkbox' ).toArray();
		data.each( function(item) { if( item.checked ) { rets += parseInt( item.value ) } } ); 
		$('result').innerHTML = 'Total : $' + rets + '<br />';
		$('opt_value').value = rets;
	}
</script>
<body>
<div id="result"></div>
<form action="" method="post" name="mainform" id="mainform">
<input type="checkbox"  name="opt[]" value="5" onclick="calculate( );"/><br />
<input type="checkbox"  name="opt[]" value="1" onclick="calculate( );"/><br />
<input type="checkbox"  name="opt[]" value="5" onclick="calculate( );"/><br />
<input type="checkbox"  name="opt[]" value="1" onclick="calculate( );"/><br />
<input type="checkbox"  name="opt[]" value="1" onclick="calculate( );"/><br />
<input type="checkbox"  name="opt[]" value="1" onclick="calculate( );"/><br />
<input type="checkbox"  name="opt[]" value="1" onclick="calculate( );"/><br />
<input type="checkbox"  name="opt[]" value="1" onclick="calculate( );"/><br />
<!-- NO SUBMIT BUTTON NEEDED, SUM CALCULATED ON EACH CHANGE AND STORED IN opt_value -->
<input type="hidden" name="opt_value" id="opt_value" value="" />
</form>
</body>
</html>
    HTML:
    Uses prototype.js link inside, also allows you to have different values assigned to every checkbox in an array......
     
    krakjoe, Apr 16, 2007 IP