<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="utf-8" />
<title>New</title>
<script type="text/javascript" src="https://ajax.googleapis.com/ajax/libs/jquery/1.4.4/jquery.min.js"></script>
<script type="text/javascript">
$(document).ready(function () {
$('#demo').submit(function () {
var values = {};
$.each($(this).serializeArray(), function(i, field) {
values[field.name] = field.value;
});
alert(parseInt(values['zahl1']) + parseInt(values['zahl2']));
return false;
});
});
</script>
</head>
<body>
<form id="demo" method="post" action="">
<p>Zahl 1: <input type="text" name="zahl1" value="1" /></p>
<p>Zahl 2: <input type="text" name="zahl2" value="2" /></p>
<p><input type="submit" value="Summe berechnen" /></p>
</form>
</body>
</html>
lol 
