---
title: "Discussion on \"Fundamentos de JavaScript - Variables: La Base de Cualquier Programa\" | Hashnode"
description: "Discussion on \"Fundamentos de JavaScript - Variables: La Base de Cualquier Programa\". Aprende a declarar variables en JavaScript con var, let y const. Diferencias de ámbito, hoisting, buenas prácticas y ejemplos claros."
url: "https://hashnode.com/posts/fundamentos-de-javascript-variables-la-base-de-cualquier-programa/68dda03388e11676521f1f61"
---

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# [Fundamentos de JavaScript - Variables: La Base de Cualquier Programa](https://martinxcvi.hashnode.dev/fundamentos-de-javascript-variables-la-base-de-cualquier-programa?utm_source=hashnode&utm_medium=feed)

Aprende a declarar variables en JavaScript con var, let y const. Diferencias de ámbito, hoisting, buenas prácticas y ejemplos claros.

Oct 1, 2025 · 13 min read · martinxcvi.hashnode.dev  
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## Written by

[Martin Aguirre](https://hashnode.com/@martinxcvi)

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