---
title: "Discussion on \"Map and Set in JavaScript: The Data Structures You Are Underusing\" | Hashnode"
description: "Discussion on \"Map and Set in JavaScript: The Data Structures You Are Underusing\". Learn how Map and Set work in JavaScript — when to use them over objects and arrays, with visuals, methods, and real-world examples."
url: "https://hashnode.com/posts/map-and-set-in-javascript-the-data-structures-you-are-underusing/69e3064bfd22b8ad62a7c360"
---

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# [Map and Set in JavaScript: The Data Structures You Are Underusing](https://nawazish.hashnode.dev/map-and-set-in-javascript-the-data-structures-you-are-underusing?utm_source=hashnode&utm_medium=feed)

Learn how Map and Set work in JavaScript — when to use them over objects and arrays, with visuals, methods, and real-world examples.

Apr 18 · 8 min read · nawazish.hashnode.dev  
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-   [#map-set](https://hashnode.com/tag/map-set)

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[NAWAZISH KHAN](https://hashnode.com/@nawazish2)

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