Class pattern javascipt

class.js

// Constructor
var Class = function (value1, value2) {
  this.value1 = value1;
};

// properties and methods
Class.prototype = {
  value1: 'default_value',
  method: function (argument) {
    this.value2 = argument + 100;
  },
};

// node.js module export
module.exports = Class;

// constructor call
var object = new Class('Hello', '2');

// http://blog.mixu.net/2011/02/02/essential-node-js-patterns-and-snippets/