Convert From/To Binary/Decimal/Hexadecimal in JavaScript

baseConverter.js

/**
* Conver From/To Binary/Decimal/Hexadecimal in JavaScript
* Matheus Graciano <graciano.dev@gmail>, Lucas Gonzalez <lucasmgonzalez1992@gmail.com>
*
* Adapted from
* https://gist.github.com/faisalman/4213592
*
* Copyright 2012-2015, Faisalman <fyzlman@gmail.com>
* Licensed under The MIT License
* http://www.opensource.org/licenses/mit-license
*/

(function(){

    var ConvertBase = function (num, length) {
        return {
            from : function (baseFrom) {
                return {
                    to : function (baseTo) {
                        if(length){
                            var result = parseInt(num, baseFrom).toString(baseTo);
                            while(result.length < length)
                                result = "0"+result;
                            return result;
                        }
                        return parseInt(num, baseFrom).toString(baseTo);
                    }
                };
            }
        };
    };
        
    // binary to decimal
    ConvertBase.bin2dec = function (num, length) {
        return ConvertBase(num, length).from(2).to(10);
    };
    
    // binary to hexadecimal
    ConvertBase.bin2hex = function (num, length) {
        return ConvertBase(num, length).from(2).to(16);
    };
    
    // decimal to binary
    ConvertBase.dec2bin = function (num, length) {
        return ConvertBase(num, length).from(10).to(2);
    };
    
    // decimal to hexadecimal
    ConvertBase.dec2hex = function (num, length) {
        return ConvertBase(num, length).from(10).to(16);
    };
    
    // hexadecimal to binary
    ConvertBase.hex2bin = function (num, length) {
        return ConvertBase(num, length).from(16).to(2);
    };
    
    // hexadecimal to decimal
    ConvertBase.hex2dec = function (num, length) {
        return ConvertBase(num, length).from(16).to(10);
    };
    
    this.ConvertBase = ConvertBase;
    
})(this);

/*
* Usage example:
* ConvertBase.bin2dec('111'); // '7'
* ConvertBase.dec2hex('42'); // '2a'
* ConvertBase.hex2bin('f8'); // '11111000'
* ConvertBase.dec2bin('22'); // '10110'
*/

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