"Class" like structure for JavaScript - a hybrid of the Module Pattern (a locally scoped object variant) and the Prototype Pattern... similar in result to the 'standard' (if such a thing) "Revealing Prototype Pattern"

classlike-prototype-module.js

// "Class" like module pattern
(function (NS) {

	'use strict';
	
	// constructor for the Person "Class", attached to global namespace
	var Person = NS.Person = function (name) {
		this.name = name;
	};
	
	// may not be necessary, but safe
	Person.prototype.constructor = Person;
	
	// private method
	var _privateMethod = function() {
		// do private stuff
		// use the "_" convention to mark as private
		// this is scoped to the modules' IIFE wrapper, but not bound the returned "Person" object, i.e. it is private
	};
		
	// public method
	Person.prototype.speak = function() {
		console.log("Hello there, I'm " + this.name);
	};
	
	return Person;
	
})(window.NS = window.NS || {});

// use your namespaced Person "Class"
var david = new NS.Person("David");
david.speak();

revealing-prototype-pattern-class.js

// and a variant more along the lines of the 'standard' Revealing Prototype Pattern

(function (NS) {
	
	'use strict';

	// constructor for the Person "Class", attached to global namespace
	var Person = NS.Person = function (name) {

		// reset constructor (the prototype is completely overwritten below)
		this.constructor = Person;

		// set properties unique for each instance
		this.name = name;
	};
 
	// all methods on the prototype
	Person.prototype = (function() {

		// private method
		var _privateMethod = function() {
			// do private stuff
			// use the "_" convention to mark as private
			// this is scoped to the IIFE but not bound to the returned object, i.e. it is private
		};
			
		// public method
		var speak = function() {
			console.log("Hello there, I'm " + this.name);
		};
 
		// returned object with public methods
		return {
			speak: speak
		};
	}());
	
})(window.NS = window.NS || {}); // import global namespace

// use your namespaced Person "Class"
var david = new NS.Person("David");
david.speak();