Design Patterns : Singleton Pattern

base.js

/**
 * @fileoverview The base initialization method
 * @author hwclass
 */

/** 
 * base.js
 * This file is used to make some creating initialization routines 
 */

'use strict';

//-----------------------------------------------------------
// Public
//-----------------------------------------------------------

  /** @type {Object} */
var Config = require(‘models/Config’);

  /** @type {Object} */
var configInstance = new Config();

  /** @type {Object} */
var config = configInstance.getConfig();

  /** @type {null} */
configInstance = null;

$(‘.error).html(config.messages.errors.default);

Config.js

/**
 * @fileoverview The base object to get configuration
 * @author hwclass
 */

/** 
 * models/Config.js
 * This object is used to fetch needed configuration parameters 
 */

'use strict';

//-----------------------------------------------------------
// Public
//-----------------------------------------------------------

/**
 * Config object
 * @noparam
 */
module.exports = (function () {
  
  return function () {
    
    var config = {
      urls : {
        tabs : {
        address : '/#address',
        payment : '/#payment'
      } 
    },
    messages : {
      errors : {
        no_address_selected : 'Please, select an address to go next',
        no_cards_used : 'You need to choose a credit card to pay',
        default : 'An error occured. Please try again later'
      }
    }
    
    /**
     * getConfig method
     * @noparam
     */
    var getConfig = function () {
      return config;
    }
    
    return {
      getConfig : getConfig
    }
    
  }
  
})();