Uploaded September 2025 | Updated September 2026, 1 week ago
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Leading tech companies have been forcing developers to embrace AI, some have gone to the point of replacing juniors with AI. Here's my take on what I think will happen with the junior developer role.
Find all Traversy Media courses at traversymedia.com
Check out AgentSea at agentsea.com/, first month at $1 with code TRAVERSY
Leading tech companies have been forcing developers to embrace AI, some have gone to the point of replacing juniors with AI. Here's my take on what I think will happen with the junior developer role.
Find all Traversy Media courses at traversymedia.com
![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.
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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")
