Direct optellen bij aanpassen tekst veld
<script type="text/javascript">
function tel()
{
var getal1 = (document.javascript.kids);
var getal2 = (document.javascript.auto);
var tot= getal1+getal2;
document.getElementById('resultaat').innerHTML =(tot);
}
</script>
<form action="" method="post">
kinderen: <input name="kids" type="text" onchange="tel()" />
auto: <input name="auto" type="text" onchange="tel()" />
<br />
<span id="resultaat"></span>
</form>
Code (php)
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<!doctype HTML>
<html>
<head>
<script type="text/javascript">
function tel()
{
var getal1 = Number( document.getElementById('kids').value );
var getal2 = Number( document.getElementById('auto').value );
var tot = getal1 + getal2;
document.getElementById('resultaat').innerHTML = tot;
}
</script>
</head>
<body>
<form action="" method="post">
kinderen: <input id="kids" name="kids" type="text" onchange="tel()" />
auto: <input id="auto" name="auto" type="text" onchange="tel()" />
<br />
<span id="resultaat"></span>
</form>
</body>
</html>
<html>
<head>
<script type="text/javascript">
function tel()
{
var getal1 = Number( document.getElementById('kids').value );
var getal2 = Number( document.getElementById('auto').value );
var tot = getal1 + getal2;
document.getElementById('resultaat').innerHTML = tot;
}
</script>
</head>
<body>
<form action="" method="post">
kinderen: <input id="kids" name="kids" type="text" onchange="tel()" />
auto: <input id="auto" name="auto" type="text" onchange="tel()" />
<br />
<span id="resultaat"></span>
</form>
</body>
</html>