Hola
ravalos7
Prueba este ejemplo:
Código PHP:
<html>
<head>
<script type="text/javascript">
function sumar() {
total = 0;
tab = document.getElementById('tabla');
for (i=0; fila = tab.getElementsByTagName('tr')[i]; i++) {
celda = fila.getElementsByTagName('td')[1];
total += parseInt(celda.innerHTML);
}
document.getElementById('txt').value = total;
}
</script>
</head>
<body>
<table id="tabla">
<tr><td>--</td><td>1</td></tr>
<tr><td>--</td><td>2</td></tr>
<tr><td>--</td><td>3</td></tr>
</table>
<input type="button" onclick="sumar()" />
<input type="text" id="txt" />
</body>
</html>
Saludos,
