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Javascript

Jayro Salgado Español 6 fichas

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1closureSon funciones que manejan variables independientes. En otras palabras, la función definida en el closure "recuerda" el entorno en el que se ha creado.
2Define JavaScriptLenguage 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.
3HoistingVariable 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.
4PromisesIs a delegate for an asynchronous action that collects references to callbacks, mantains state, and provides a mechanism for chaining.
5when to use a Q.deferreduse it when you are handling a async function with no promise chain
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