Adding 2 currency values together

**denhamd2** · 09-17-2008 10:04 AM

Hello,

I'm looking to add 2 currency values together, is this possible using Javascript? So basically I have values stored in 2 variables:

var price1 = "19,99 EUR"
var price2 = "9,99 EUR"

Is there any way to add these together to produce a third variable equalling 29,98 EUR?

Thanks in advance

**konithomimo** · 09-17-2008 10:14 AM

Even though this sound like a HW assignment:

1.remove the " EUR" --> ex: price1=price1.replace(' EUR','');
2. replace the comma with a period --> ex: price1=price1.replace(',','.');
3. evaluate both as floats (toFixed(2) if needed) --> price1=parseFloat(price1).toFixed(2);
4. add together --> price3=price1+price2;
5. replace the period with a comma --> ex: price3=price3.replace('.',',');
6. add the " EUR" --> price3=price3+' EUR';

You can condense it down a bit, but that is the basic way to do it.

**denhamd2** · 09-17-2008 10:33 AM

Thanks, thats a big help

As sometimes the currency can be different is there any way of instead of replacing the " EUR" bit, to cut the last 4 characters off instead and then adding the cut off bit back in at the end?

**konithomimo** · 09-17-2008 10:47 AM

You could use the substring() method to do that, or you can use split:

Code:

var price1 = "19,99 EUR";
price1_split = price1.split(' ');
price1 = price1_split[0];//19,99
cur = price1_split[1];//EUR
.
.
.
price3 = price1+price2+' '+cur;

then do the rest of the code.

**denhamd2** · 09-17-2008 10:59 AM

Thanks for this. However I tried it and when I attempt to document.write the result outputted is 19.999,99 EUR. Please could you help me find if I have something wrong in the code? Your help is a lifesaver!

Code:

var price1 = "19,99 EUR";
price1_split = price1.split(' ');
price1 = price1_split[0];//19,99
cur = price1_split[1];//EUR


var price2 = "9,99 EUR";

price2_split = price2.split(' ');
price2 = price2_split[0];//19,99


price1=price1.replace(',','.');
price2=price2.replace(',','.');
price1=parseFloat(price1).toFixed(2);
price2=parseFloat(price2).toFixed(2);
price3=price1+price2;
 price3=price3.replace('.',',');
price3 = price1+price2+' '+cur;



document.write(price3);

**konithomimo** · 09-17-2008 11:22 AM

YOu need to put the last replace after the line below it:

Code:

<html>
<head>
<script type="text/javascript">
function add(){
var price1 = "19,99 EUR";
price1_split = price1.split(' ');
price1 = price1_split[0];
cur = price1_split[1];


var price2 = "9,99 EUR";

price2_split = price2.split(' ');
price2 = price2_split[0];//19,99

price1=price1.replace(',','.');
price2=price2.replace(',','.');

price1=parseFloat(price1);
price2=parseFloat(price2);
price3=(price1+price2).toFixed(2);
price3 = price3+' '+cur;
price3=price3.replace('.',',');

document.write(price3);
return;
}
</script>
</head>
<body onload="add()">
</body>
</html>

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