Can anyone help with this, I am stuck!

Hello All,

I have a form which has various options in it, with a total cost field, the
total cost will change when a certain option is chosen, I seem to be having
a problem getting the form to display the value correctly.

For example, I can get the form displaying the data for 139.99, but if I
have a whole amount like 4.00 it only displays 4.

Another problem I have is say I have an item for 9.99 with 3 color options
with costs of either 1.00,2.00 or 3.00

If I select the option one, the total displays correctly, ie 10.99, and if I
select option 2 it displays 11.99, but if I change my mind and want option 1
it displays the data like this 10.990000, any ideas.

This is the script I have.

<SCRIPT LANGUAGE="JavaScript">

function onLoad()
{

if (document.additem.OPTidOption3)
{
document.additem.OPTidOption3.selectedIndex=0;
}

changePrice(document.additem.total.value);
}


function changePrice(newPrice)
{
var newPriceVatN = newPrice ;
var newPriceVat = newPriceVatN.toString();
var priceArray = newPriceVat.split('.');
if (priceArray.length == 2)
{
if (priceArray[1].length == 1)
{
newPriceVat = priceArray[0] + '.' + priceArray[1] + '0';

}
else if(priceArray[1].length > 2)
{
var price2N = priceArray[1];
var price2 = new String(price2N);

var dig1 = new String(price2.substring(0,1));
var dig2 = new String(price2.substring(1,2));
var dig3 = new String(price2.substring(2,3));
var dig1and2 = new String(dig1 + dig2);
var dig1and2num = parsefloat(dig1and2);

var thirddigit = parsefloat(dig3);

if (thirddigit > 4)
{
dig1and2num++;
}
newPriceVat = parseFloat(priceArray[0] + '.' +
dig1and2num);

}
}
else
{
newPriceVat = priceArray[0];


}
}



function OPTidOption3FUNC(theForm)
{
var newVal =
parseFloat(OPTidOption3ARRAY[theForm.OPTidOption3.selectedIndex]);
if (newVal != theForm.OPTidOption3SEL.value)
{
theForm.total.value =
parseFloat(theForm.total.value) - parseFloat(theForm.OPTidOption3SEL.value);
theForm.total.value = newVal +
parseFloat(theForm.total.value);
theForm.OPTidOption3SEL.value = newVal;
changePrice(theForm.total.value);
}
}
OPTidOption3ARRAY = new Array();
OPTidOption3ARRAY[0] = 0.00;


OPTidOption3ARRAY[1] = 99.00

OPTidOption3ARRAY[2] = 499.00

OPTidOption3ARRAY[3] = 249.00

</Script>



Many thanks in advance

Andrew

"Andie" <andie (AT) mansuntv (DOT) co.uk> wrote

Hello All,

I have a form which has various options in it, with a total cost field,
the total cost will change when a certain option is chosen, I seem to be
having a problem getting the form to display the value correctly.

For example, I can get the form displaying the data for 139.99, but if I
have a whole amount like 4.00 it only displays 4.

I made function for this purpouse in my own application, that converts
floats human readable numbers. 0 is "0.00", 4 is "4.00" 1023456.2 is
"1,023,456.20", so it also adds commas to separate thousands, and presents
two decimals at all times. The thing is, you must also be prepared at server
to recieve the number in the thousands-separated format. If you don't like
this, just change the following lines:
var buff = "";
for(j=-1, i=integerpart.length; i>=0; i--, j++){
if((j%3) == 0 && j>1)
buff = "," + buff;
buff = integerpart.charAt(i) + buff;
}
return buff+"."+decimalpart;

to simply

return integerpart+"."+decimalpart;



here's the function:
function floatToStr(aFloat){
if(!aFloat)
return "0.00";
integerpart = (aFloat<0) ? Math.ceil(aFloat) : Math.floor(aFloat);
decimalpart = Math.abs(Math.round((aFloat - integerpart)*100));
integerpart+= '';
if(decimalpart<10)
decimalpart="0"+decimalpart;
if(decimalpart==0)
decimalpart="00";
var buff = "";
for(j=-1, i=integerpart.length; i>=0; i--, j++){
if((j%3) == 0 && j>1)
buff = "," + buff;
buff = integerpart.charAt(i) + buff;
}
return buff+"."+decimalpart;
}

Hope this helps. It has not been optimized, but it has been in use for quite
some time now and I haven't gotten any complaints of, so it should work.
Pretty fucking ugly, but it works and that's good enough for me.


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