decimal-to-hex and hex-to-decimal conversion in javascript

hexify.js

(function($) {

    $.hexify = {

        decimalToHex: function(decimal) {
            var hex = decimal.toString(16);
            hex = $.hexify.padPrefix(hex, 2, "0");
            return hex;
        },

        hexToDecimal: function(hex) {
            var decimal = parseInt(hex, 16);
            return decimal;
        },

        padPrefix: function(s, width, padChar) {
            var paddedS = s;

            if(s.length < width) {
                var padding = new Array(width - paddedS.length + 1).join(padChar);
                var paddedS = padding + s;
            }

            return paddedS;
        },

    };

}(jQuery));