When JavaScript was first introduced, I dismissed it as being not worth my attention. 

Much later, I took another look at it and discovered that hidden in the browser was an excellent programming language. 

Douglas Crockford

Autor del estándar de JSON
Miembro del comité de desarrollo de Javascript

• Un método
• Una clase
• Un Constructor
• Un módulo

function hacerAlgo() { }

var hacerAlgo = function hacerAlgo() { }

var hacerAlgo = function() { }

var ViewModel = function(){  var self = this;  this.nombre = ko.observable();  this.apellido = ko.observable();}
//One way to do itvar miObjeto = new ViewModel();
//Another way to do itvar miOtroObjeto = Object.create(ViewModel);
//How NOT to do itvar miOtroObjeto = ViewModel();

//Variable globalvar dinosaurio = 'velociraptor';
var ECOSISTEMA = new (function (){
   var self = this;
   self.dinosaurio = 'Trex';
   return self;
})();

dinosaurio != ECOSISTEMA.dinosaurio;

• Array.sort() no está implementado en el javascript engine
  
• El objeto 'console' no existe
  
• Todos los tabs corren en la misma sesión
• getComputedStyle no funciona

//En estos dos casos la variable 'i' se refiere a la misma
for (var i=0; i< 10; i++){
	console.log(i);
}

for (var i=0; i< 20; i++){
	console.log(i);
}

• When a function is called with the 'new' operator 'this' refers to a new empty object.

• If a function is instanced without the 'new' operator, 'this' refers to the calling object.

• When this is called in any other scenario it refers to the global object (browser)

• Javascript entry on Wikipedia 
• Google Javascript Engine V8
• Libros
• Javascript: the good parts
• Secrets of the Javascript Ninja
• JS Books (gratis)
• Blog Posts
• Brendan Eich: The web is the gaming platform
• Jeff Attwood: The lingua franca of the web
• Jon Resig: Simple Javascript Inheritance
• Javascript.info: Prototypal Inheritance Explained
• Presentaciones
• Gaming with javascript and html 5
  

• Bredan Eich - Javascript at 17
• Gary Berhnart - Codemash 2012
• Douglas Crockford
• Javascript: Your new Overlord 
  
• Javascript: The good parts
• Javascript: Function the Ultimate