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

[zalodias]

Extremely helpful to know what's behind the scenes. Thanks for the series Brad. Definitely looking forward to more videos like this in the future!

[berkaygurcan]

It was a really great series. It greatly increased my knowledge. Thank you.

[itodoshadrach]

This voice keeps me going....thank you brad

[ebcoutinho]

My man thank you so much for this amount of knowledge you shared with us for free. Really, you have no idea how important it was for me. I squeezed the whole series until I get every knowledge drop. I took notes and screenshots of everything. Again, thanks a lot, you have my gratitude. Hugs from a new fan from Brazil!!

[chuanqisun]

Just want to point out a small inaccuracy. The new edge (judging by the logo you used) is chromium based, so it's V8. Chakra is only used in the older edge browser.

[abdullahsoomro]

An amazing series to understand javascript deeply. Thanks Bradley ❤

[Bestill_]

Proud to be a patreon sponsor!!!. Always appreciate you lessons.

[jonathanm.]

Very nice series, it would be great to have one on algorithms/patterns with JS (what would be recommended for a dev web, and other extra but are not mandatory) and really small exercices to compare with you. It would be awesome and fun!

[mobile_genshin]

Thank you so much for this series. It's really well-explained, it's always important for me to understand how things work to really know what I'm doing! And the diagrams are very helpful too!

[justcoder]

Thanks Brad after writing JS for 12 months this really helped answer so many question that has developed over that time makes things just make sense. I purchased 'modern JS' so I will have to revisit it. Thanks again

[elvispalace]

this course should have at least 100 videos 🥺

[jeloi]

really cool analogy between compiled and interpreted 👌

[fahad.hossain]

I am a 3y exp dev and this series is very helpful for general knowledge and interviews. Thanks Brad.

[biggsly]

Fantastic series! I can feel the wrinkles forming on my brain.

[choppinbrixx]

Still hope you'll add closures to under the hood. Its a topic that confuses a lot of people and you can see the closure in the object properties. I think youd be able to do a good job explaining it. Cheers on the series, i thought you did a great job!

[tjdrzewiecki]

That was such an informative series. Thank you for making this.

[Mvrck]

Love the analogy of Compiling - Learning a foreign language vs Interpreting - Having an interpreter with you abroad.

[iambabyro]

I just looove the series! Especially useful for a person with no background in computer science!

[yatheeshgowda]

Brad I can't thank you enough how awesome this series was. It definitely gave me a new perspective on how JS works behind the scenes. Thank You Bradley (Lol 😂)

[snehaprajapati]

Thanks a lot for this whole series, it was really very to the point and helpful. And yes you make good diagrams.