---
title: "Discussion on \"Function Declaration vs Function Expression: What Is the Difference?\" | Hashnode"
description: "Discussion on \"Function Declaration vs Function Expression: What Is the Difference?\". What Functions Are and Why We Need Them\nA function is a reusable block of code that performs a specific task. Instead of repeating the same logic multiple times, we define it once and call it whenever"
url: "https://hashnode.com/posts/function-declaration-vs-function-expression-what-is-the-difference/69fc37133d9a9c101972eb19"
---

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# [Function Declaration vs Function Expression: What Is the Difference?](https://blog.shyamhz.dev/function-declaration-vs-function-expression-what-is-the-difference?utm_source=hashnode&utm_medium=feed)

What Functions Are and Why We Need Them A function is a reusable block of code that performs a specific task. Instead of repeating the same logic multiple times, we define it once and call it whenever

May 7 · 4 min read · blog.shyamhz.dev  
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Just a stubborn coder

I write code , that run in the browser and someone else's machine. And sometimes I also write articles

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