---
title: "What is a Javascript Engine?"  
description: "What is a Javascript Engine?"  
author: "Ethan Karla"  
published: 2021-02-04  
canonical: https://www.mindstick.com/interview/33775/what-is-a-javascript-engine  
category: "javascript"  
tags: ["javascript", "scripting language"]  
reading_time: 2 minutes  

---

# What is a Javascript Engine?

#### The Javascript Engine -

Where the [javascript engine](https://en.wikipedia.org/wiki/List_of_ECMAScript_engines) is mostly used to run the java code in the browser so you can define a javascript engine as a computer program which is used to perform the java code. Firstly, it was just used for interpretation and progressively it improved and got evolved. Normally, all browsers have one dealer and he is the one who develops the javascript engine.

[A JavaScript engine is a computer program that executes JavaScript (JS) code. ]

- The first modern JavaScript engine was[**V8**, created by Google](https://en.wikipedia.org/wiki/JavaScript_engine) for its Chrome browser.
- **SpiderMonkey** is developed by Mozilla for use in Firefox and its forks.
- **JavaScriptCore** is Apple's engine for its Safari browser.
- Chakra is the JavaScript engine of the Internet Explorer browser.

## Answers

### Answer by Ethan Karla

#### The Javascript Engine -

Where the [javascript engine](https://en.wikipedia.org/wiki/List_of_ECMAScript_engines) is mostly used to run the java code in the browser so you can define a javascript engine as a computer program which is used to perform the java code. Firstly, it was just used for interpretation and progressively it improved and got evolved. Normally, all browsers have one dealer and he is the one who develops the javascript engine.

[A JavaScript engine is a computer program that executes JavaScript (JS) code. ]

- The first modern JavaScript engine was[**V8**, created by Google](https://en.wikipedia.org/wiki/JavaScript_engine) for its Chrome browser.
- **SpiderMonkey** is developed by Mozilla for use in Firefox and its forks.
- **JavaScriptCore** is Apple's engine for its Safari browser.
- Chakra is the JavaScript engine of the Internet Explorer browser.


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Original Source: https://www.mindstick.com/interview/33775/what-is-a-javascript-engine

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