Javascript

Question	Answer
closure	Son funciones que manejan variables independientes. En otras palabras, la función definida en el closure "recuerda" el entorno en el que se ha creado.
Define JavaScript	Lenguage interpretado, orientado a objetos con funciones de primera clase. Es un lenguaje script multi-paradigma, basado en prototipos, dinámico, soporta estilos de programación funcional, orientada a objetos e imperativa.
Hoisting	Variable declarations are processed before any code is executed, declaring a variable anywhere in the code is equivalent to declaring it at the top. This also means that a variable can appear to be used before it's declared. As it appears that the variable declaration is moved to the top of the function or global code.
Promises	Is a delegate for an asynchronous action that collects references to callbacks, mantains state, and provides a mechanism for chaining.
when to use a Q.deferred	use it when you are handling a async function with no promise chain

Resource summary

	Created by Jayro Salgado about 8 years ago