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Home > Forums > Programmers > Web Development > Javascript Forum

adding money valuesHelpful Member! 

thread216-1687437
Read More Threads Like This One
craigward (Programmer)
4 Jul 12 11:57
Hi there,

I am having trouble getting a math function to add to currency values together.

The issue is the rounding, here is a basic example. var c is returning 3761 and it should be 3762.38

I have played with a lot of examples but can't get it working. Is there a simple method out there to achieve the correct calculation?

Thanks for looking.

CODE

<html>
<head>

</head>

<body onLoad="calcvals()">

<script language="JavaScript">

function calcvals(){

var a = '3145,8'
var b = '616,58'
var c = parseFloat(a) + parseFloat(b)
alert(c)

}

</script>

</body>
</html>
Helpful Member!  vacunita (Programmer)
4 Jul 12 12:21
Javascript has no locale settings, so it can't recognize a comma as a decimal separator. Having values that use a comma as a decimal separator will cause issues like the one you are having. That is the actual numbers are being parsed as rounded integers since the comma there is not valid.

Change your values to use periods instead.

CODE

var a = '3145.8'

var b = '616.58'

----------------------------------
Phil AKA Vacunita
----------------------------------
Ignorance is not necessarily Bliss, case in point:
Unknown has caused an Unknown Error on Unknown and must be shutdown to prevent damage to Unknown.

Web &amp; Tech

craigward (Programmer)
4 Jul 12 12:26
Thank you smile
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