---
title: "Discussion on \"What Are Nested Arrays?\nAnd How Do You Flatten Them?\" | Hashnode"
description: "Discussion on \"What Are Nested Arrays?\nAnd How Do You Flatten Them?\". A complete guide to flattening JavaScript arrays. Understand the tree mental model, compare methods, and solve the classic interview problem."
url: "https://hashnode.com/posts/what-are-nested-arrays-and-how-do-you-flatten-them/69eefa6d3d6a492cdd934bd9"
---

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# [What Are Nested Arrays? And How Do You Flatten Them?](https://iamharshitsharma-gitotes.hashnode.dev/what-are-nested-arrays-and-how-do-you-flatten-them?utm_source=hashnode&utm_medium=feed)

A complete guide to flattening JavaScript arrays. Understand the tree mental model, compare methods, and solve the classic interview problem.

Apr 27 · 9 min read · iamharshitsharma-gitotes.hashnode.dev  
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[HARSHIT SHARMA](https://hashnode.com/@iamharshitsharma)

@iamharshitsharma · New Delhi

  
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