---
title: "Discussion on \"Tricky use case of Array.prototype.map in JS\" | Hashnode"
description: "Discussion on \"Tricky use case of Array.prototype.map in JS\". If you are familiar with functional programming, Array.prototype.map must be a function that you work with every day.\nFor me, map() is a powerful function, but there might be some tricky use case of it that you don't know about!\nLet's walk through so..."
url: "https://hashnode.com/posts/tricky-use-case-of-arrayprototypemap-in-js/69623f128827666df4d63669"
---

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# [Tricky use case of Array.prototype.map in JS](https://kmstech.co/blogs/tricky-use-case-of-arrayprototypemap-in-js?utm_source=hashnode&utm_medium=feed)

If you are familiar with functional programming, Array.prototype.map must be a function that you work with every day. For me, map() is a powerful function, but there might be some tricky use case of it that you don't know about! Let's walk through so...

Jan 10 · 4 min read · kmstech.co  
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-   [#array](https://hashnode.com/tag/array)
-   [#functional-programming](https://hashnode.com/tag/functional-programming)
-   [#javascript](https://hashnode.com/tag/javascript)
-   [#map](https://hashnode.com/tag/map)
-   [#use-cases](https://hashnode.com/tag/use-cases)

## Written by

[KMS Tech](https://hashnode.com/@KMSTech)

@KMSTech · Dhaka, Bangladesh

  
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