Javascript - Format number

js.numberFormat.js

exports.digits = function(number){
    if (!isNaN(number)) {
        number += '';
    }
 
    if (number == '') {
        return 0;
    }
 
    number = exports.replaceAll(number, ',', '');
    number = parseFloat(number).toFixed(2);
    return number.replace(/(\d)(?=(\d\d\d)+(?!\d))/g, "$1,");
};

//replace all match char in string
exports.replaceAll = function(source, pattern, replacement){
    return source.split(pattern).join(replacement);
};