I8N (Internacionalization) Module fast easy and jQuery independent

i8n.js

////////////////////////////////////////////////////////////////////////////////
// @file         : i8n.js                                                     //
// @summary      : Internacionalization module                                //
// @version      : 0.1                                                        //
// @project      : i8n                                                        //
// @description  :                                                            //
// @author       : Benjamin Maggi                                             //
// @email        : [email protected]                                    //
// @date         : 7 Mar 2014                                                 //
// -------------------------------------------------------------------------- //
//                                                                            //
// License:                                                                   //
// (The MIT License)                                                          //
//                                                                            //
// Permission is hereby granted, free of charge, to any person obtaining a    //
// copy of this software and associated documentation files (the 'Software'), //
// to deal in the Software without restriction, including without limitation  //
// the rights to use, copy, modify, merge, publish, distribute, sublicense,   //
// and/or sell copies of the Software, and to permit persons to whom the      //
// Software is furnished to do so, subject to the following conditions:       //
//                                                                            //
// The above copyright notice and this permission notice shall be included    //
// in all copies or substantial portions of the Software.                     //
//                                                                            //
// THE SOFTWARE IS PROVIDED 'AS IS', WITHOUT WARRANTY OF ANY KIND, EXPRESS OR //
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,   //
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL    //
// THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER //
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING    //
// FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER        //
// DEALINGS IN THE SOFTWARE.                                                  //
////////////////////////////////////////////////////////////////////////////////
(function (root, factory) {
    "use strict";
    if (typeof exports === 'object') {
        // Node. Does not work with strict CommonJS, but
        // only CommonJS-like enviroments that support module.exports,
        // like Node.
        module.exports = factory();
    } else if (typeof define === 'function' && define.amd) {
        // AMD. Register as an anonymous module.
        define([], factory);
    } else {
        // Browser globals (root is window)
        root.I8N = factory();
    }
}(this, function () {
    'use strict';
    ////////////////////////////////////////////////////////////////////////////
    // Private helpers                                                        //
    ////////////////////////////////////////////////////////////////////////////     
    String.prototype.format = function() {
        var formatted = this;
        var arg = arguments[0];
        var regexp = null;
        var key = null;
        if(arg === Object(arg) && arg instanceof Array !== true) {
            for(key in arg) {
                if(arg.hasOwnProperty(key)) {
                    regexp = new RegExp('\\{{' + key + '\\}}', 'gi');
                    formatted = formatted.replace(regexp, arg[key]);
                }
            }
        } else {
            for (var i = 0; i < arguments.length; i++) {
                var regexp = new RegExp('\\{{' + i + '\\}}', 'gi');
                formatted = formatted.replace(regexp, arguments[i]);
            }
        }
        return formatted;
    };
    ////////////////////////////////////////////////////////////////////////////
    // Constructor                                                            //
    ////////////////////////////////////////////////////////////////////////////    
    var I8N = (function() {
        function I8N(file, cb) {
            var that = this;
            this.version = '1.0';
            this.language = 'en';
            this.data = null;
            this.isReady = false;

            console.log("init: ", file);
            var self = this;

            var xhr = new XMLHttpRequest();
            xhr.open('GET', file);
            xhr.onreadystatechange = function () {
                if (this.readyState == 4) {
                    self.data = JSON.parse(this.responseText);
                    self.isReady = true;
                    self.updateUi(document);
                    if (typeof cb !== "undefined") {
                        cb(self);
                    }
                }
            };
            xhr.send(null);
            return this;
        }
        I8N.prototype.get = function(key) {
            var localized = null;
            if (this.data) {
                localized = this.data[key];
            }
            if(!!localized) {
                return localized;
            } else {
                return key;
            }
        }
        I8N.prototype.updateUi = function(element) {
            var self = this;
            var nodes = element.querySelectorAll('[data-i8n]');
            // update i8n values
            for(var i = 0; i < nodes.length; i++) {
                var node = nodes[i];
                var key = node.getAttribute('data-i8n');
                var keyTokens = key.split(':');

                if (keyTokens.length == 2) {
                    if (keyTokens[0] == 'html') {
                        // html
                        node.innerHTML = self.get(keyTokens[1]);
                    } else {
                        // other attribute
                        node.setAttribute(keyTokens[0], self.get(keyTokens[1]));
                    }
                } else {
                    // text
                    if(node.textContent.match(',')) {
                        var args = node.textContent.split(',');
                        var text = self.get(key);
                        var result = String.prototype.format.apply(text, args);
                        node.textContent = result;
                    } else {
                        node.textContent = self.get(key);
                    }
                }
                node.removeAttribute('data-i8n');
            }

            // remove i8n initialization attributes
            var elems = element.querySelectorAll('[data-i8n-show=onReady]');
            if(elems.length > 0) {
                elems.setAttribute('data-i8n-show', null);
                elems.setAttribute('data-i8n-ready', true);
            }
            return element;
        }
        I8N.prototype.getVersion = function() {
            console.log(this.version);
            return this.version;
        };
        return I8N;
    }());
    // Just return a value to define the module export.
    // This example returns an object, but the module
    // can return a function as the exported value.
    return I8N;
}));

Now you can do:

KEY: "the {{0}} is under the {{1}}"

cat,table