---
title: "Discussion on \"Front-end Machine Coding Series #3: Build an Expandable Accordion UI with Vanilla JS\" | Hashnode"
description: "Discussion on \"Front-end Machine Coding Series #3: Build an Expandable Accordion UI with Vanilla JS\". Learn how to build a clean, scalable accordion using plain HTML, CSS, and JavaScript. Support default open section, dynamic content, and active section..."
url: "https://hashnode.com/posts/front-end-machine-coding-series-3-build-an-expandable-accordion-ui-with-vanilla-js/688b7c341e68cbe17446599e"
---

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Discussion

# [Front-end Machine Coding Series #3: Build an Expandable Accordion UI with Vanilla JS](https://nitin-saini.hashnode.dev/front-end-machine-coding-series-3-build-an-expandable-accordion-ui-with-vanilla-js?utm_source=hashnode&utm_medium=feed)

Learn how to build a clean, scalable accordion using plain HTML, CSS, and JavaScript. Support default open section, dynamic content, and active section...

Jul 31, 2025 · 4 min read · nitin-saini.hashnode.dev  
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-   [#accordion](https://hashnode.com/tag/accordion)
-   [#javascript](https://hashnode.com/tag/javascript)
-   [#frontend-development](https://hashnode.com/tag/frontend-development)
-   [#frontend](https://hashnode.com/tag/frontend)
-   [#html5](https://hashnode.com/tag/html5)
-   [#css3](https://hashnode.com/tag/css3)
-   [#web-development](https://hashnode.com/tag/web-development)

## Written by

[Nitin Saini](https://hashnode.com/@saininitin)

@saininitin · India

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

Full Stack Developer | JavaScript | AWS | React | Node

A Full Stack Web Developer, possessing a strong command of React.js, Node.js, Express.js, MongoDB, and AWS, alongside Next.js, Redux, and modern JavaScript (ES6+)

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