You can understand the JavaScript engine V8! You can get hints on how to write more efficient code.
135 learners
Level Basic
Course period Unlimited
Reviews from Early Learners
5.0
nameunskadms
A lecture that compactly explains rich and deep content! This is a lecture I've really been waiting for! I want to buy all the lectures you give in the future. take my money!!! Please give me more lectures!
5.0
망고
Thank you for explaining the V8 engine so clearly—something I’ve always been curious about but could never understand whenever I tried to look it up. Haha. I think this is great for getting a handle on the overall flow.
5.0
무지55
I once decided to study it someday but kept postponing it - this lecture provides a simple understanding of the v8 engine and is satisfying enough to make future learning feel less burdensome
How the V8 Engine Works and Its History
JavaScript code execution flow
Optimization techniques such as inlining, hidden classes, and inline caching
Optimization tips when writing code
Understand how a V8 engine works,
Become a front-end developer who grows together!
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If you are a web developer, you will often encounter Chrome browser and Node.js.
It is a JavaScript engine developed by Google.
🤔 : I want to become a better JavaScript developer...
🤗 : You may know JavaScript syntax, but to become a better developer, you need to have some understanding of how the JavaScript engine works.
There can be a big difference between writing your code without understanding how it will be executed and optimized, and writing it with understanding.
🤔 : So why is the engine important?
🤗 : Without an engine, the JavaScript language would be meaningless. Because the computer wouldn't be able to understand the code developers write. Of course, you don't need to know the ins and outs of the engine, but I'm confident that understanding how it works will lay the foundation for writing better code.
What will you gain from this lecture? Why should you know it? Let's find out together!
Let's learn how the V8 engine works by looking at the JIT compiler, interpreter, and static compiler!
Also, learn about the background and history of the V8 engine and compare the compiler pipelines of other JavaScript engines, SpiderMonkey and JavaScriptCore (JSC)!
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Let's find out what inlining optimization is!
Also, think about what benefits inlining optimization can bring!
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Let's learn about the form of JavaScript Objects defined in the ECMAScript Spec and how to access properties within an object!
Let's take a look at why the concept of hidden classes came into being, what form they take, and the order in which Transition Chains are constructed, one by one!
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In Section 3, we learned about hidden classes! Let's explore how inline caching works and how to optimize it!
Let's take a look at what states (transition marks) inline caching manages and what you need to be careful about to get the benefits of inline caching!
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Let's take a true or false quiz by looking at example code and guessing whether two objects share the same hidden class!
We've prepared a total of six quizzes. Pause the screen for a moment and think about the answer as you proceed!
And we'll also take the time to compare the same hidden classes using the built-in functions of the V8 engine in Node.js!
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We'll conclude the lecture by learning three optimization tips for writing code, based on the concepts we've learned!
You've completed the course! Thank you for your hard work. 🎉
Who is this course right for?
For those of you who were curious about how the V8 engine works
For those who want to know the JavaScript code execution flow
For those of you who have ever wondered how your code is optimized
For those who want to have a perspective from the engine perspective
Need to know before starting?
Basic knowledge of JavaScript
Career Verified
135
Learners
13
Reviews
5
Answers
4.8
Rating
1
Course
Hello.
I am a frontend developer with a strong interest in various technologies and performance optimization.
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20 lectures ∙ (1hr 34min)
Course Materials:
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13 reviews
4.8
13 reviews
Reviews 8
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Average Rating 5.0
5
I was lost on how to approach or conceptualize, It greatly helped in visualizing the overall big picture.
That initial overwhelming feeling, I truly empathize. Still, I'm so glad you finished the course and it helped you grasp the big picture! If any other concepts or topics were similarly tough, please share anytime! I'd like to work through them together and share in a clear format :) Let's keep growing together! 💪
Reviews 54
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Average Rating 4.7
5
Thank you for explaining the V8 engine so clearly—something I’ve always been curious about but could never understand whenever I tried to look it up. Haha. I think this is great for getting a handle on the overall flow.
I'm glad it was helpful for your understanding haha. I will always be rooting for you on your journey, Mango. Thank you for the kind words.
Reviews 45
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Average Rating 4.8
Edited
5
I was excited to start watching the V8 engine lecture from the very first chapter. At first, there were some difficult parts, but I was able to catch on to what the functions were by looking at the keywords. Even if I didn't fully understand the content, I was able to get some good ideas about the V8 engine. It was a great lecture that was inspiring because there were novel aspects compared to other languages.
Thank you! The V8 engine, while involving somewhat complex concepts, is also an area that greatly helps in deeply understanding JavaScript, which is why I really wanted to introduce it. I'm truly happy that you gained much inspiration just from the ideas and structure, even if you didn't fully understand it. I will continue to prepare more so that I can assist you with interesting and practical topics in the future. Thank you for the kind course review 🙏
Reviews 3
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Average Rating 5.0
5
I remember being asked to explain the structure of the JavaScript engine during an interview for a company I really wanted to join. If I had known the content of this lecture back then, my life might be a little different now. Although it's quite late, thanks to this great lecture, I feel like I could answer that same question well if I were asked again.
I am glad that I could be of even a little help to you, radiantbeing. We live in an era where tools like Claude are overflowing, but I believe that as hard as you are studying, there will be many times when it pays off in the future. I will always be rooting for you. Thank you.
Reviews 6
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Average Rating 4.3
5
I once decided to study it someday but kept postponing it - this lecture provides a simple understanding of the v8 engine and is satisfying enough to make future learning feel less burdensome
Muji55, I'm glad to hear you were satisfied. Thank you for your kind words, and I'll continue to root for you!
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