---
title: "How JavaScript Works: A Visual Guide🔥 🤖"
url: https://daily.dev/posts/how-javascript-works-a-visual-guide---xe0abomc
source_url: https://javascript.plainenglish.io/how-javascript-works-a-visual-guide-515199eef837
type: article
source: "JSK"
published: 2021-09-29T14:10:05.423Z
updated: 2026-03-15T04:57:40.628Z
tags: ["containers", "general-programming", "javascript"]
reading_time: 1
upvotes: 320
comments: 17
language: en
---

> ## Documentation Index
> Fetch the complete documentation index at: https://daily.dev/llms.txt
> Use this file to discover all available pages before exploring further.

# How JavaScript Works: A Visual Guide🔥 🤖

**[JSK](https://daily.dev/sources/jsk)** · 1 min read · 320 upvotes · 17 comments

## Summary

JavaScript is a synchronous, single-threaded language. It can only execute one command at a time and in a specific order. The browser creates a global execution context with two components, namely memory and code components. When JavaScript runs functions, it will create an execution context inside the global executioncontext.

## Full article

daily.dev links to this article rather than hosting it. Read it at the original source: <https://javascript.plainenglish.io/how-javascript-works-a-visual-guide-515199eef837>

## Community discussion

Top comments from developers on daily.dev.

**@steppico** · 2 upvotes

> Interesting article. I shared it with some friends who are instructors in a beginner-level coding class. I think it would be useful to help students understand how JS really works. And I won't hide it, the visualizations really helped me as well... :)
>
> Good job!

**@arissardi** · 0 upvotes

> Pretty cool

**@ankanleo** · 0 upvotes

> JavaScript is everywhre

**@pedrobritto** · 0 upvotes

> Pretty sweet!

**@faisalahammad** · 0 upvotes

> Love the explanation

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---

Tags: [#containers](https://daily.dev/tags/containers), [#general-programming](https://daily.dev/tags/general-programming), [#javascript](https://daily.dev/tags/javascript)

[View this post on daily.dev](https://daily.dev/posts/how-javascript-works-a-visual-guide---xe0abomc)