---
title: "Discussion on \"JavaScript simple behind-the-scenes concepts\" | Hashnode"
description: "Discussion on \"JavaScript simple behind-the-scenes concepts\". JS Runtime is the heart of JS Runtime Environment. Browser can only execute the JS code because it has a JS runtime environment. JS engine is not a machine it’s a low-level program\nFunctions bind together within lexical scope/environment is closures...."
url: "https://hashnode.com/posts/javascript-simple-behind-the-scenes-concepts/66640c07b60e0aa822089614"
---

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# [JavaScript simple behind-the-scenes concepts](https://nishitiwari.hashnode.dev/javascript-simple-behind-the-scenes-concepts?utm_source=hashnode&utm_medium=feed)

JS Runtime is the heart of JS Runtime Environment. Browser can only execute the JS code because it has a JS runtime environment. JS engine is not a machine it’s a low-level program Functions bind together within lexical scope/environment is closures....

Jun 8, 2024 · 1 min read · nishitiwari.hashnode.dev  
Updated Jun 26, 2024  
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-   [#javascript](https://hashnode.com/tag/javascript)
-   [#methods](https://hashnode.com/tag/methods)
-   [#functions](https://hashnode.com/tag/functions)
-   [#arrowfunction](https://hashnode.com/tag/arrowfunction)

## Written by

[Nishi Tiwari](https://hashnode.com/@NishiTiwari)

@NishiTiwari · Mumbai, India

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

Aspiring Data Analyst, Data never lies

Final-year MCA student from Mumbai and an aspiring Data Analyst with a growing interest in Machine Learning and Deep Learning. Skilled in SQL, Python, data analysis, and core CS subjects (DBMS, OS, CN, basic DSA). Currently exploring Cloud and DevOps—especially GCP—as part of my learning journey, while working as a part-time freelancer.

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