Mega Code Archive
Number format, round and total
<![CDATA[
<HTML>
<HEAD>
<SCRIPT LANUAGE="JavaScript1.1">
// returns the amount in the .99 format
function twoPlaces(amount) {
return (amount == Math.floor(amount)) ? amount + '.00' : ((amount*10 == Math.floor(amount*10)) ? amount + '0' : amount);
}
// rounds number to X decimal places, defaults to 2
function round(number,X) {
X = (!X ? 2 : X);
return Math.round(number*Math.pow(10,X))/Math.pow(10,X);
}
function totals(num) {
return twoPlaces(Math.floor((num - 0) * 100) / 100);
}
</SCRIPT>
</HEAD>
<BODY >
<B> Two Decimal Places </B>
<BR>
0.00 is
<script LANUAGE="JavaScript1.1">
document.write(twoPlaces(0.00));
</script>
<BR>
.10 is
<script LANUAGE="JavaScript1.1">
document.write(twoPlaces(.10));
</script>
<BR>
1 is
<script LANUAGE="JavaScript1.1">
document.write(twoPlaces(1))
</script>
<BR>
.-530 is
<script LANUAGE="JavaScript1.1">
document.write(twoPlaces(-.530) )
</script>
<BR><BR>
51.02 - 3.8 =
<B>
<script LANUAGE="JavaScript1.1">
document.write(round(totals(51.02) - totals(3.80) ));
</script>
</BODY>
</HTML>
]]>