Foros del Web - Ver Mensaje Individual - Sumar valor a medida que se clickean checkbox

quimfv · #2 (**permalink**) 15/01/2010, 02:41

Quito el php,
Trabajo con enteros (100,50 --> 10050) para eliminar los problemas de redondeos...

Recuerda formatear precio antes de guardarlo en la bbdd.... 100,50 ---> 100.50

Quim

Código HTML:

Ver original<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head>
<title>Documento sin t&iacute;tulo</title>
<meta http-equiv="Content-Type" content="text/html; charset=iso-8859-1">
<script language="JavaScript" type="text/JavaScript">
function suma(obj){
  total=parseInt(document.getElementById("precio").value.replace(",",""));
    if(obj.checked){
        total+=parseInt(obj.value);
    }else{
        total-=parseInt(obj.value);
    }
    txttotal=total+"";
    if (txttotal=="0") txttotal="000";
    document.getElementById("precio").value=txttotal.substring(0,txttotal.length-2)+","+txttotal.substring(txttotal.length-2);
}
</script>
</head>
<body>
<table width="50%" border="1" cellspacing="0" cellpadding="0">
  <tr>
    <td>Cabalgata&nbsp;</td>
    <td>&nbsp;10,50€&nbsp;</td>
    <td><input type="checkbox" name="exc1" id="exc1" value="1050" onChange="suma(this)"/></td>
  </tr>
  <tr>
    <td>Paseo en bote&nbsp;</td>
    <td>&nbsp;20,00€&nbsp;</td>
    <td><input type="checkbox" name="exc2" id="exc2" value="2000" onChange="suma(this)"/></td>
  </tr>
  <tr>
    <td>Ski&nbsp;</td>
    <td>&nbsp;30,30€&nbsp;</td>
    <td><input type="checkbox" name="exc3" id="exc3" value="3030" onChange="suma(this)"/></td>
  </tr>
  <tr>
    <td>TOTAL:&nbsp;</td>
    <td>&nbsp;&nbsp;</td>
    <td><input type="text" name="precio" id="precio" value="0,00" /></td>
  </tr>
</table>
</body>
</html>