![JavaScript Under The Hood [5] - JavaScript Engine Overview @TraversyMedia](https://i.ytimg.com/vi/oc6faXVc54E/sddefault.jpg)
Uploaded July 2022 | Updated September 2026, 1 week ago
In this final video of the series, we will talk about JS engines and look at how JavaScript code is turned into machine code that runs on the CPU.
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Timestamps:
0:00 - Intro
0:42 - What is a JS Engine?
1:31 - Specific Browser Engines
3:30 - Compiled vs Interpreted Languages
6:11 - JS Engine Process Overview
7:25 - Abstract Syntax Tree (AST)
10:01 - Interpreter & Bytecode
10:58 - JIT Compilation
In this final video of the series, we will talk about JS engines and look at how JavaScript code is turned into machine code that runs on the CPU.
💻 My Courses & More
traversymedia.com
💖 Show Support
Patreon: patreon.com/traversymedia
PayPal: paypal.me/traversymedia
👇 Follow Me On Social Media:
Twitter: twitter.com/traversymedia
Instagram: instagram.com/traversymedia
Linkedin: linkedin.com/in/bradtraversy
Timestamps:
0:00 - Intro
0:42 - What is a JS Engine?
1:31 - Specific Browser Engines
3:30 - Compiled vs Interpreted Languages
6:11 - JS Engine Process Overview
7:25 - Abstract Syntax Tree (AST)
10:01 - Interpreter & Bytecode
10:58 - JIT Compilation
![JavaScript Under The Hood [5] - JavaScript Engine Overview](https://i.ytimg.com/vi/oc6faXVc54E/mqdefault.jpg "JavaScript Under The Hood [5] - JavaScript Engine Overview
In this final video of the series, we will talk about JS engines and look at how JavaScript code is turned into machine code that runs on the CPU.
💻 My Courses & More
https://traversymedia.com
💖 Show Support
Patreon: https://www.patreon.com/traversymedia
PayPal: https://paypal.me/traversymedia
👇 Follow Me On Social Media:
Twitter: https://twitter.com/traversymedia
Instagram: https://www.instagram.com/traversymedia
Linkedin: https://www.linkedin.com/in/bradtraversy
Timestamps:
0:00 - Intro
0:42 - What is a JS Engine?
1:31 - Specific Browser Engines
3:30 - Compiled vs Interpreted Languages
6:11 - JS Engine Process Overview
7:25 - Abstract Syntax Tree (AST)
10:01 - Interpreter & Bytecode
10:58 - JIT Compilation")
