Classes/Objects in JavaScript: Different ways to define them

Objects with JavaScript.js

/***********************************
Author: Rodrigo Augosto C.
Twitter: http://twitter.com/coto
Date: Dec 17, 2010
************************************/

// ######   Example 1: Object Using new Object()   ######
person = new Object();
person.name = "Brendan Eich";
person.height = "6Ft";
person.records = [12, 23, 34];

person.run = function() {
	this.state = "running";
	this.speed = "4ms^-1";
	document.write(this.name + " is "+this.state+" and his last record was " + this.records[2] + " seconds");
}
person.run();



// ######   Example 2: Object Using JSON   ######
person = {
	name : "John Resig",
	height : "6Ft",
	records : [12, 23, 34],
	run : function(){
		this.state = "running";
		this.speed = "4ms^-1";
		document.write(this.name + " is "+this.state+" and his last record is " + this.records[2] + " seconds");
	}
};

person.run();


// ######   Example 3: Class using function and prototype   ######
function Corredor(name, height) {
	this.name = name;
	this.height = height;
	this.records = [2, 3, 3];
	this.run = function() {
		this.state = "running";
		this.speed = "4ms^-1";
		document.write("<p>" +this.name + " is "+this.state+" and his last record is " + this.records[2] + " seconds</p>");
	}
} 

person1 = new Corredor("Fulano");
person1.run();

person2 = new Corredor("Mengano");
person2.run();


// Prototype to add a method
Corredor.prototype.changeName = function(name) {
	this.name = name;
}
cat1.changeName("Sultano");
cat1.run() 



// ### It can help you to get information from these objects ###
// alert(typeof person);
// for(x in person) alert( x + " = " + person[ x ] )