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# Is there an easy way to format currency in Javascript?

Posted on 2012-04-06
Medium Priority
269 Views
Hi,

Is there an easy way to format currency in Javascript?

Ex.  10000.00  to \$10,000.00.

Thanks
0
Question by:taborrg
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LVL 17

Assisted Solution

Anuroopsundd earned 1000 total points
ID: 37818467
function CurrencyFormatted(amount)
{
var i = parseFloat(amount);
if(isNaN(i)) { i = 0.00; }
var minus = '';
if(i < 0) { minus = '-'; }
i = Math.abs(i);
i = parseInt((i + .005) * 100);
i = i / 100;
s = new String(i);
if(s.indexOf('.') < 0) { s += '.00'; }
if(s.indexOf('.') == (s.length - 2)) { s += '0'; }
s = minus + s;
return s;
}

http://www.web-source.net/web_development/currency_formatting.htm

http://stackoverflow.com/questions/149055/how-can-i-format-numbers-as-money-in-javascript
0

LVL 20

Accepted Solution

Proculopsis earned 1000 total points
ID: 37818473
// Slightly less complex

function currency(amount) {
var pennies = parseInt(amount * 100);
var reverse = pennies.toString().split("").reverse().join("");
reverse = reverse.replace(/(\d{2})/, "\$1.");
reverse = reverse.replace(/(\d{3})/g, "\$1,");
return reverse.split("").reverse().join("").replace(/^,*/, "\$\$");
}

0

LVL 20

Expert Comment

ID: 37818480
//Negative amounts

function currency(amount) {
var prefix = ( amount < 0 )? "-" : "";
var pennies = parseInt(Math.abs(amount) * 100);
var reverse = pennies.toString().split("").reverse().join("");
reverse = reverse.replace(/(\d{2})/, "\$1.");
reverse = reverse.replace(/(\d{3})/g, "\$1,");
var result = reverse.split("").reverse().join("").replace(/^,*/, "\$\$");
return prefix + result;
}

0

LVL 1

Author Comment

ID: 37818489
Thanks!

I'm going to have to work on this a bit later as it turns out.
0

LVL 9

Expert Comment

ID: 37819080
Do you have to display it in a text box as soon as the user blurs it and/or while he types in it, or what else...?
0

LVL 1

Author Closing Comment

ID: 37849621
Thanks for the help.
0

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