# Format Currency

This function will round numbers to two decimal places, and ensure that the returned value has two decimal places. For example 12.006 will return 12.01, .3 will return 0.30, and 5 will return 5.00

``````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;
}``````

1. Chase Moskal

If you want a smaller function:

``````
function currency(N){N=parseFloat(N);if(!isNaN(N))N=N.toFixed(2);else N='0.00';return N;}

// >> currency("-14"): "-14.00"
``````

If you want a smaller, more inline alternative, you can do this:

``````
// Right after you declare your number (N), the rest of the line does the formatting.
var N=24.686; N=parseFloat(N);if(!isNaN(N))N=N.toFixed(2);else N='0.00';
// >> N: "24.69"
``````

-Chase

• Chase Moskal

Hey, here’s myself from the future. I re-gazed upon this, and further improved things:

`function currency(n){n=parseFloat(n);return isNaN(n)?false:n.toFixed(2);}`

``````currency(2); //--> '2.00'
currency(3.253); //--> '3.25'
currency(3.257); //--> '3.26'

currency("3.2"); //--> '3.20'
currency("butts"); //--> false
``````
2. Andras

Is it a css trick?

3. Thang

Hi all!!

Is there any way to add comma while typing number? and we can edit all of number.

Ex: 123,456,555, we can edit number 1 –> 6

Thanks

• Paul C Allsopp

On keyup check the length of the field. If it is greater than 4 and contains no period, add a comma after every 3rd number from the right. When a period is encountered, set a flag to stop the formatting.

• Michael Max

// with comma for thousands
function format_currency(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 = Number(i).toLocaleString(‘en’);
if(s.indexOf(‘.’) < 0) { s += ‘.00’; }
if(s.indexOf(‘.’) == (s.length – 2)) { s += ‘0’; }
s = minus + s;
return s
}

4. Manie

The website’s name is css-tricks but you give a Java solution?

5. mahesh

thanks
i want to put auto price changer to my website

``````OSREC.CurrencyFormatter.format(2534234, { currency: 'INR' }); // Returns ₹ 25,34,234.00