---
title: "Discussion on \"Understanding Variables and Data Types in JavaScript\" | Hashnode"
description: "Discussion on \"Understanding Variables and Data Types in JavaScript\". Beginner guide to JavaScript variables: var vs let vs const, primitive types (string, number, boolean, null, undefined) & simple scope explanation."
url: "https://hashnode.com/posts/variables/69b45447210c74252f83637a"
---

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# [Understanding Variables and Data Types in JavaScript](https://devjpateldotcom.hashnode.dev/variables?utm_source=hashnode&utm_medium=feed)

Beginner guide to JavaScript variables: var vs let vs const, primitive types (string, number, boolean, null, undefined) & simple scope explanation.

Mar 13 · 5 min read · devjpateldotcom.hashnode.dev  
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Hi, I’m DEVeloper passionate about building software that helps businesses grow, optimize their operations, and increase profitability. I focus on creating practical solutions that solve real-world problems and deliver measurable results.

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