How can I format the text entered into an HTML textfield like currency?

Question

I have a series of texfields, which I'd like to format as currency. Preferably, this would be done on the fly but at least onblur. What I mean by currency format is 349507 -> $349,507. Is it possible?

I prefer HTML/CSS/JS solutions, because I need less explanation. I'm not familiar at all with jQuery.

Any help is greatly appreciated.
Mike

Answer 1

First result in a Google search for "javascript format currency"

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

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;
}