Rails-like number_with_delimiter in javascript

number_with_delimiter.js

Number.prototype.number_with_delimiter = function(delimiter) {
    var number = this + '', delimiter = delimiter || ',';
    var split = number.split('.');
    split[0] = split[0].replace(
        /(\d)(?=(\d\d\d)+(?!\d))/g,
        '$1' + delimiter
    );
    return split.join('.');    
};

Credit goes to http://kevinvaldek.com/number-with-delimiter-in-javascript

I just swiped that extended Number.prototype with it (and he swiped it from Rails, were I originally went to swipe from).

Thanks for posting. It'd be great if rails shipped with javascript versions of most of the view helpers...

Thank you for sharing! This is exactly what I want.