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[CS Technical Interview 7] JavaScript That Clicks

A course that helps you understand core JavaScript concepts and practice explaining them verbally in interviews

(5.0) 13 reviews

310 learners

Level Basic

Course period Unlimited

  • yiyj10305235
javascript
javascript
자바스크립트
자바스크립트
3시간 만에 완강할 수 있는 강의 ⏰
3시간 만에 완강할 수 있는 강의 ⏰
비전공자
비전공자
JavaScript
JavaScript
Tech Interview
Tech Interview
javascript
javascript
자바스크립트
자바스크립트
3시간 만에 완강할 수 있는 강의 ⏰
3시간 만에 완강할 수 있는 강의 ⏰
비전공자
비전공자
JavaScript
JavaScript
Tech Interview
Tech Interview

Reviews from Early Learners

Reviews from Early Learners

5.0

5.0

한지웅

63% enrolled

I'm enjoying this so much. I've been using JavaScript without this kind of deep understanding, but it's so interesting how you explain each technology by covering the situation before it was introduced and the reasons why it was adopted. I'm even doing Google searches and asking GPT questions while listening. I'd like to purchase and listen to your other courses too.

5.0

..

37% enrolled

I enjoyed it so much! I'm curious if you have any intention of creating a React course as well. After listening to all the CS courses and then the JS course, I feel like I understand a lot more by connecting them, so I'd love to study React too!

5.0

강냉

100% enrolled

It was great to be able to comprehensively review and quickly check JavaScript overall. The learning materials also included diagrams, which made it easy to organize the content in my head into writing or speech.

What you will gain after the course

  • Understanding Core JavaScript Concepts

  • The ability to explain verbally in technical interviews

  • Practical workbook PDF that prepares you for follow-up questions

말이 트이는 CS 기술면접 소개 포스터

🥲 Have you ever had this experience in an interview?

1. Confusing concepts when answering

❓InterviewerWhat are the characteristics of object-oriented programming?
💬 Candidate The SOLID principles. First, S is..(omitted)...

This is a situation where the characteristics of object-oriented programming (abstraction, encapsulation, inheritance, polymorphism) and
object-oriented design principles (SOLID) are confused.
This can give the impression that the foundational framework of basic concepts is not established.

2. Knowing only What, but unable to explain How / Why

❓Interviewer What are the characteristics of TCP?
💬 Candidate It's a protocol that guarantees reliability.
❓ Interviewer What mechanisms guarantee reliability?
💬 Candidate Uh... well... it makes transmission safe... like...

You only know the superficial definition and are not prepared to explain the underlying principles.
If 3-way handshake, sequence numbers, ACK, retransmission, flow control, and congestion control
are not connected as a single flow, you will inevitably get stuck on follow-up questions.

3. Getting stuck on basic questions

❓Interviewer What is HTTP?
💬 Candidate Um... it's for sending and receiving data on the web... something like that...?

It's a very familiar concept, but when you actually try to explain it in one sentence, the words don't come out.
This isn't a lack of knowledge, but rather a lack of experience organizing and articulating it.


Just knowing is not enough. It only becomes true skill when you can articulate it.

🔥 So we structured it this way.

✦ A cut above the rest, premium content for interview preparation

1⃣ CS Notes organized specifically for interview preparation

  • We compiled essential concepts and principles you must review before interviews into lecture materials.

  • While building your fundamentals, it's structured so you can review it again right before your interview.

  • Not just a simple summary, but with diagrams and easy explanations that even non-majors can fully understand.


Computer Architecture Lecture Material Example

2⃣ Appendix | Interview Practice Materials Provided

  • In interviews, the ability to explain clearly is far more important than simply knowing something.

  • However, organizing and practicing on your own is not easy and can be a tedious task.

  • At the end of the lecture materials, we've included "answering in one or two sentences" training to reduce the effort of organizing.


Database Course Appendix Example

3⃣ Prepare for follow-up questions with our Technical Interview Practice Workbook PDFincluded

  • "Will this course alone really be enough for speaking practice?"
    After much consideration,

    I created a Technical Interview Practice Workbook.

  • I designed it so you can practice speaking as if in a real interview even on your own.

  • You can find detailed information about the workbook structure and how to use it in the workbook introduction video at the beginning of the course.

Operating System Workbook Example

4⃣ A course that keeps growing with a one-time purchase

  • This course is provided with an unlimited enrollment period.

  • The content will continue to expand with new explanations, additional examples, and more.

  • Even if the price increases as content is added, students who have already purchased
    can access all content at no additional cost.

  • It's a CS fundamentals book you can keep coming back to whenever you need it.

💡 Here's how to make the most of this abundant content

1⃣ Download the materials and learn the core concepts while watching the lectures.
2⃣ Take notes on important parts to create your own CS interview notebook.
3⃣ Save it on your phone and review briefly whenever you have time.

If you have an interview coming up,
and don't have much time → Use the appendix [Interview Practice] in the course materials to quickly sharpen your interview skills.
If you have time → Complete your speaking practice like a real interview with the Technical Interview Practice Workbook..

🎯 Recommended for

Non-majors, job seekers, career changers, and anyone preparing for technical interviews who needs to be able to articulate CS fundamentals verbally

CS majors who need to review

I've studied it before, but
I can't bring myself to reorganize all that CS knowledge again

Don't open those thick textbooks
again.
We'll cover only the essentials clearly.

Non-CS majors who find CS overwhelming

I'm preparing for technical interviews
for the first time and don't know
where to start

By following the roadmap, you can
focus on learning only
the core CS concepts..

Job seekers with no time to spare

I don't have time.
I just need to quickly review
only the CS topics that come up in interviews

You can quickly review on your own with
lecture materials and
interview chapters available.

🔥 Reviews from students who experienced it first

A truly helpful course.
Already proven by 3,000+ students.

⭐️⭐️⭐️⭐️⭐️

1. A lecture that shows how much the author has thought and considered from the student's perspective (seems to consider the learner's flow of understanding)
2. Easy to understand with diverse visual materials and examples
3. When learning knowledge, it mentions and reminds you of previously learned content, connecting the knowledge. Knowledge connects and the big picture emerges.
4. The depth of knowledge is not shallow. I'm taking OS right after Computer Architecture, and the synergy is great.
5. Scratches the itch of "why" & "why is it used" curiosities.
ps. Sorry to the author, but.. this is a lecture I want to keep to myself.

-'Operating Systems' Course Review

⭐️⭐️⭐️⭐️⭐️

Despite the short lecture duration, I really appreciate how you clearly explain only the important parts. Since it was somewhat theory-focused, I didn't expect SQL queries to be covered, but it was great that you showed examples one by one while teaching basic syntax and how to write queries. After that, the coverage of joins, normalization, transactions, indexes and data optimization, and security was excellent. I haven't tried other paid courses yet, but the last lecture appendix titled "Interview Practice" showed actual questions and answers, which was great for self-study and practice. The lecture duration isn't too long if you focus, so I think I'll go through it multiple times. Thank you

-'Database' Course Review

⭐️⭐️⭐️⭐️⭐️

The core content was explained clearly with a logical flow, which helped me quickly review data structures. Thank you for the great lecture.

-'Data Structures' Course Review

⭐️⭐️⭐️⭐️⭐️

Wow... this is really so good...;;;; I need to save up money and buy the entire roadmap.. I'm curious if you're planning to do lectures on Spring as well.. I'll buy it right away..

-Review of 'Java and Object-Oriented Programming'

⭐️⭐️⭐️⭐️⭐️

This is a lecture where you can organize the key concepts of JavaScript all at once by setting aside a day! Great for a refresher before interviews👍



-'JavaScript' Course Reviews

⭐️⭐️⭐️⭐️⭐️

As a non-CS major, I was worried about how to study computer architecture and operating systems among CS knowledge, but the appropriate amount of content made it easy to learn without burden, and it was great because it felt like getting tutored by an expert. I'm planning to take the operating systems course as well and I'm looking forward to it. Thank you!

-'Computer Architecture' Course Review

🖐 Hello! Let me introduce myself! 🙇

As a non-CS major, when I first prepared for a developer job, I only focused on algorithms and coding tests.
I gained some confidence and passed most coding tests, but I kept failing at the next hurdle—technical interviews. What was the problem? It was the lack of CS (Computer Science) knowledge.

I understand the thirst for fundamentals (CS knowledge, programming languages, etc.) better than anyone. I dove into countless materials through self-study and built up my own know-how, and now I'm working as a 🧑🏻‍💻 Kakao developer.

Since I was young, I've been more confident than anyone in combining and restructuring various materials to create 'my own consolidated notes'. This course is that secret notebook containing all that know-how and passion.

🚀 The seventh course in the CS Series That Opens Your Mouth is JavaScript.

  • Is it difficult to structurally explain the difference between prototypes and classes?

  • Is it difficult to confidently explain the execution order of event loop, microtasks, Promise, and async/await?


📖 Curriculum packed with only the essentials chỉ chứa những nội dung cốt lõi

This is the curriculum and key topics you will learn in this course.

If there are any unfamiliar keywords, make sure to grasp them firmly this time.

  1. Scope and Execution Context

    • Scope, Lexical Environment, Execution Context, Hoisting, TDZ, this keyword, Explicit Binding, JS Runtime


  2. Closures

    • The concept and operating principles of closures, advantages and disadvantages from data encapsulation and memory management perspectives

  3. JavaScript Operating Principles

    • Single-threaded structure, synchronous vs asynchronous processing flow, how the event loop works (call stack, task queue)

  4. Asynchronous Programming

    • Callback functions and callback hell, Promise state changes and chaining, async/await syntax and error handling

  5. Prototypes and Inheritance

    • Object creation methods and constructor functions,

      The concept of prototypes and their connection structure,

      Various Prototype Inheritance Methods

  6. Working with Arrays and Objects

    • Array methods like map, filter, reduce, object destructuring and spread operator

  7. JavaScript Module System

    • ES module system structure, differences between import/export, dynamic import and code splitting

  8. Browser and JavaScript

    • JavaScript execution preparation process, script loading strategies, DOM and events, event propagation

  9. [Appendix] Interview Practice

    • Review key concepts once more in Q&A format

✏ Here's what we'll learn

1⃣ Understanding JavaScript Core Mechanisms Through Flow

  • Understand how complex mechanisms connect and operate such as scope, execution context, event loop, and call stack through flowcharts and timelines

실행 컨텍스트 생성 과정

Execution Context Creation Process

2⃣ Step-by-step flow explanation using diagrams, handwriting, and code

  • Not just memorization, but a structure combining visuals + code + handwritten notes
    → Even complex concepts are naturally learned through parallel handwriting and execution results
    → A 'review-oriented lecture' structure that you can revisit and organize even while taking the course

스코프의 정의와 종류

Definition and Types of Scope

3⃣ Pattern-focused examples to build practical skills

  • Structured to help you understand patterns encountered in practice, such as prototype inheritance, event delegation, and module loading strategies,
    along with the reasons why

class 기반 프로토타입 상속 예시

class-based prototype inheritance example

👀 Course Preview

If the video is frozen, please refresh :)

How to overcome the limitations of single-threaded execution: Event Loop

Promise operation principles and follow-up processing methods

말이트이는 CS 시리즈

Things to note before taking the course

  • Provided learning material format: PDF

  • This is a course that does not require prerequisite knowledge.


Recommended for
these people

Who is this course right for?

  • A non-CS major who feels lost because this is their first time studying CS

  • A computer science major who needs to organize CS concepts before a technical interview

  • A job seeker preparing for a career change who has limited time before a technical interview

Need to know before starting?

  • Javascript Basic Syntax

Hello
This is

3,673

Learners

164

Reviews

24

Answers

4.9

Rating

7

Courses

학력 및 경력

  • 서울대학교 졸업

  • 현 카카오 서버 개발자

     

 

강의 소개 

CS 개념을 면접에서 말로 풀어낼 수 있도록 돕는
말이 트이는 CS 시리즈를 만들고 있습니다.

 

강의 철학

컴퓨터 비전공자로 개발을 시작해 CS 기초부터 기술 면접까지 직접 정리하며 시행착오를 많이 겪었습니다. 그 과정에서 쌓인 학습법과 개념 정리 노하우를 바탕으로, 실무와 면접에서 꼭 마주치는 핵심 개념을 그림으로 쉽게 이해할 수 있도록 만드는 콘텐츠를 제작하고 있습니다.
"그때의 저에게 필요했던 강의를 만들고 있습니다."

 

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Contact

yiyj1030@gmail.com

Curriculum

All

40 lectures ∙ (3hr 33min)

Course Materials:

Lecture resources
Published: 
Last updated: 

Reviews

All

13 reviews

5.0

13 reviews

  • fined0006806님의 프로필 이미지
    fined0006806

    Reviews 35

    ∙

    Average Rating 4.7

    5

    100% enrolled

    I already knew this content, but I took the course because I was curious about how someone else would explain it. It was good for review.

    • hochoi86214872님의 프로필 이미지
      hochoi86214872

      Reviews 11

      ∙

      Average Rating 5.0

      5

      30% enrolled

      I'm learning things I didn't know while reviewing what I studied

      • wlgus74641980님의 프로필 이미지
        wlgus74641980

        Reviews 1

        ∙

        Average Rating 5.0

        5

        60% enrolled

        It's good that it focuses on the difficult parts and core concepts rather than covering all of JavaScript.

        • smkr967024님의 프로필 이미지
          smkr967024

          Reviews 3

          ∙

          Average Rating 5.0

          Edited

          5

          63% enrolled

          I'm enjoying this so much. I've been using JavaScript without this kind of deep understanding, but it's so interesting how you explain each technology by covering the situation before it was introduced and the reasons why it was adopted. I'm even doing Google searches and asking GPT questions while listening. I'd like to purchase and listen to your other courses too.

          • dlatjdgns2839112님의 프로필 이미지
            dlatjdgns2839112

            Reviews 2

            ∙

            Average Rating 5.0

            5

            32% enrolled

            Great for preparing CS for in-person interviews!!

            $29.70

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            Through this lecture, students will be able to learn the basic and post-processing technology flow of semiconductors, and will be able to learn the content necessary to prepare for interviews at post-processing semiconductor companies.

            입문

            입문

            Tech Interview, Embedded

            Basic semiconductor post-processing testing (evaluation and analysis)강의 썸네일

            Basic semiconductor post-processing testing (evaluation and analysis)

            hjsemi

            From a beginner to launching a web service: 2021 Jeju Coding Base Camp (Django)강의 썸네일

            From a beginner to launching a web service: 2021 Jeju Coding Base Camp (Django)

            jejucoding

            Online bootcamp in Jeju! Create your own service quickly! :)

            입문

            입문

            jQuery, JavaScript, Python

            From a beginner to launching a web service: 2021 Jeju Coding Base Camp (Django)강의 썸네일

            From a beginner to launching a web service: 2021 Jeju Coding Base Camp (Django)

            jejucoding