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JavaScript

/*jshint browser:true, devel:true*/
/*jshint -W097*/ //DEVEL
'use strict';
/**
 * Convert From/To Binary/Decimal/Hexadecimal in JavaScript
 * https://gist.github.com/faisalman
 *
 * Copyright 2012-2015, Faisalman <[email protected]>
 * Licensed under The MIT License
 * http://www.opensource.org/licenses/mit-license
 */

var convertBase = function () {

    function convertBase(baseFrom, baseTo) {
        return function (num) {
            return parseInt(num, baseFrom).toString(baseTo);

        };
    }

    // decimal to hexadecimal
    convertBase.dec2hex = convertBase(10, 16);
    return convertBase;
}();


alert(convertBase.dec2hex('42')); // '2a'