It's a common floating point problem. U can solve it by multiplying both values
with 100 and then ehh / (don't know what the word is) the resulting value by
100.
var x = ((Number("40") * 100) - (39.90 * 100)) / 100;
trace(x);
Greetz Erik
-----Original Message-----
From: flexcoders@yahoogroups.com [mailto:[EMAIL PROTECTED] On Behalf Of Matt
Chotin
Sent: woensdag 4 mei 2005 7:55
To: flexcoders@yahoogroups.com
Subject: RE: [flexcoders] Help i don't know
Should Number(tx_inc.text) be parseFloat(tx_inc.text) instead?
-----Original Message-----
From: flexcoders@yahoogroups.com [mailto:[EMAIL PROTECTED] On Behalf Of [EMAIL
PROTECTED]
Sent: Tuesday, May 03, 2005 9:33 AM
To: Flex Coders
Subject: [flexcoders] Help i don't know
Hi,
if you can see my code, please, "Resto()" function it's very simple.
If in my tx_inc.text put 40EUR, and in my
ShoppingCart(mx.core.Application.application.shopping).total put 39.90EUR
return me 0.10000000000000001???????????
I have trace my var the value for tx_inc.text and for total it's correct, but
my resto var is crazy? what's i wrong?
<?xml version="1.0" encoding="utf-8"?>
<mx:Canvas xmlns:mx="http://www.macromedia.com/2003/mxml"; height="20%"
width="100%" visible="true" xmlns="*">
<mx:Script>
<![CDATA[
import as.*;
var resto=0;
public var vendite;
function Resto():Void
{
if(ShoppingCart(mx.core.Application.application.shopping).total>0 )
{
resto=
Number(tx_inc.text)-ShoppingCart(mx.core.Application.application.shopping).t
otal;
mx.controls.Alert.show(resto);
}
else
{
resto=0;
tx_inc.text='';
}
}
]]>
</mx:Script>
<mx:NumberFormatter id="ft_price"
precision="2"
rounding="none"
decimalSeparatorTo=","
thousandsSeparatorTo="."
useThousandsSeparator="true"/>
<mx:Panel id="tot" title="Totale Scontrino" width="100%" height="100%"
headerColors="[#FF6600,#FFFFFF]">
<mx:Tile>
<mx:Label id="ltot" text="Totale EUR
{ft_price.format(ShoppingCart(mx.core.Application.application.shopping).tota
l)}"
fontSize="20"/>
<mx:Label id="lresto" text="Resto EUR {ft_price.format(resto)}"
fontSize="20"/>
<mx:Label text="Articoli
{ShoppingCart(mx.core.Application.application.shopping).size}"
fontSize="20"/>
<mx:Label id="lvendite" text="Vendite n°{vendite}" fontSize="20"/> <mx:Label
text="Incassato" fontSize="20"/> <mx:TextInput id="tx_inc" change="Resto()"
fontSize="20" /> </mx:Tile> </mx:Panel>
</mx:Canvas>
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