---
title: "Discussion on \"Undefined Vs Not Defined in Javascript\" | Hashnode"
description: "Discussion on \"Undefined Vs Not Defined in Javascript\". When working with JavaScript, you might run into the terms not defined and undefined. While they may sound identical, they represent different situations in JavaScript programming.\nIn phase one memory allocation, the Js will assign each variable a pl..."
url: "https://hashnode.com/posts/undefined-vs-not-defined-in-javascript/66e96da41c0cb304c48699ec"
---

[Feed](https://hashnode.com/feed) /

Discussion

# [Undefined Vs Not Defined in Javascript](https://ashlynjoshy.hashnode.dev/undefined-vs-not-defined-in-javascript?utm_source=hashnode&utm_medium=feed)

When working with JavaScript, you might run into the terms not defined and undefined. While they may sound identical, they represent different situations in JavaScript programming. In phase one memory allocation, the Js will assign each variable a pl...

Sep 17, 2024 · 1 min read · ashlynjoshy.hashnode.dev  
Read the article

-   [#javascript](https://hashnode.com/tag/javascript)
-   [#beginners](https://hashnode.com/tag/beginners)
-   [#web-development](https://hashnode.com/tag/web-development)

## Written by

[Ashlyn Joshy](https://hashnode.com/@AshlynJoshy)

@AshlynJoshy · Kerala, India

  
[View profile](https://hashnode.com/@AshlynJoshy)

Computer Science Engineer

## Responses

Markdown supported · ⌘↵ to post

No responses yet.