in static/plugins/math.js [16:21]
Number.prototype.pretty = function(fix) {
if (fix) {
return String(this.toFixed(fix)).replace(/(\d)(?=(\d{3})+\.)/g, '$1,');
}
return String(this.toFixed(0)).replace(/(\d)(?=(\d{3})+$)/g, '$1,');
};