Newbie Question

camcim · Nov 29, 2001

Hi Guys,
Why can't i do a simple addition. Basically I'm trying to get values from two input boxes and add them together and place that result into another input box. Multiplication and subtraction seem to work well enough, why not addition?

The code is:

<html>
<head>
<SCRIPT language=JavaScript>
function Sub()
{
var ace1 = document.form1.t1.value;
var ace2 = document.form1.t2.value;
var ace3 = document.form1.t3.value;

var tot = ace1 - ace2;

document.form1.t3.value=tot;
}
</script>
</head>

<body bgcolor="#FFFFFF" text="#000000">
<form name="form1">
<input type="text" name="t1"><br>
<input type="text" name="t2"><br>
<input type="text" name="t3"><br>
<input type="button" name="Button" value="Button" onClick="Sub()">
</form>
</body>
</html>

Damian13 · Nov 29, 2001

Yes ... a question that I can answer

Just swop this line
var tot = ace1 - ace2;

With this line
var tot = parseInt(ace1) + parseInt(ace2);

You were trying to do maths stuff with a string and in JavaScript the thing you use to combine string is + thats why it did what it did.

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Newbie Question

camcim

Programmer

Damian13

Programmer

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