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Cleanup JavaScript: Base Build-up!

We deal with ideas. You can logically organize the core and fundamentals of JavaScript. You can structure your own JavaScript experiences and thoughts. You can establish the technical logic of JavaScript. You can broaden your perspective to see the entirety of JavaScript. You can prepare for JavaScript technical interview questions.

(4.8) 4 reviews

175 learners

Level Basic

Course period Unlimited

  • tonextday
JavaScript
JavaScript
Interview
Interview
Tech Interview
Tech Interview
JavaScript
JavaScript
Interview
Interview
Tech Interview
Tech Interview

What you will gain after the course

  • You can logically organize the core and fundamentals of JavaScript.

  • You can organize your own JavaScript experiences and thoughts.

  • You can establish the technical logic of JavaScript.

  • You can broaden your perspective on the entire JavaScript ecosystem.

  • You can prepare for JavaScript technical interview questions.

We have prepared an Omakase course of 40-year JavaScript Chef👨🏼‍🍳 featuring
55 recipes (expected technical interview questions).
We have even completed the cooking (problem-solving) using these recipes.

thoughtful 1 Please enjoy the meal, savor the flavors, and strengthen your skills.
1. You can prepare for technical interviews with expected technical interview questions and solutions.
2. You can create technical interview questions as an interviewer.
3. You can check your own skill level.

Cleanup JavaScript is about how you think! 🧠

  • The course topics are not difficult, but they are broad and deep, requiring a lot of detailed thinking.

  • I hope this will be a time for you to savor and reflect on the beauty of JavaScript.

  • I hope this will be a time for you to savor the elegance of the JavaScript language.

  • I hope this will be a time for you to clearly organize (clean up) the depth, breadth, and details of JavaScript contained within every single term and context.

  • This course is packed with topics designed for reflection and appreciation, allowing you to clean up the depth, breadth, and details of your knowledge.


Course Features

📌 Focuses on the thought process.
📌 This is not a coding-centric course. While it covers JavaScript syntax, that is not the core focus.
📌 It explores the core and fundamentals of JavaScript deeply, broadly, and in detail through logical progression.
📌 It approaches topics with proven logic by providing technical rationales.
📌 The entire course unfolds as a single scenario, allowing you to organize the big picture through interconnected content.

Recommended for these people

"I want to become a JavaScript legend!"
First, you must have a solid foundation and grasp of the basics.
Only then will everything you build truly become your own skill. You need to develop your own logic through extensive experience on top of a strong foundation. In this course, you will experience the essentials required to become a legend.Có như vậy, những gì bạn tích lũy mới thực sự trở thành năng lực của bản thân. Bạn cần xây dựng tư duy logic của riêng mình thông qua nhiều trải nghiệm trên một nền tảng vững vàng. Qua khóa học này, bạn có thể cảm nhận được những yếu tố thiết yếu để trở thành một huyền thoại.

"I value the basics and fundamentals... but I don't know what the standard is."
Don't overthink it.
With me, you can find the path of what to do and how to do it.
I hope you find the answers you need in this course.Hy vọng bạn chắc chắn sẽ tìm thấy câu trả lời trong khóa học này.

"I'm a first-year junior developer... and I feel like I'm floating in mid-air."
This is because you lack the certainty of knowing "this is it."
To gain certainty, you must logically verify technologies yourself. However, that is even more difficult. This course covers verified content. The standard for that verified content is the ECMAScript specification.

Here is what you will learn.

Should we avoid using var variables
and use let and const instead?


The validity of JavaScript syntax and engine processing logic is weak.
You must use var, let, and const variables according to the function execution environment. This course develops the logic behind this.
To develop this logic,
you must understand the related JavaScript syntax, execution context structure, and engine processing forms and methods.
It covers the execution context structure, processing forms, and methods based on ES2025.Khóa học sẽ đề cập đến cấu trúc, hình thái và phương pháp xử lý của ngữ cảnh thực thi dựa trên tiêu chuẩn ES2025.

ES2025 Execution Contexts

This covers the structure and processing methods of execution contexts based on ES2025. A deep understanding of execution contexts is essential for JavaScript developers.

Expected benefits after taking the course

Lecture Perspective

  • You can logically organize the core and fundamentals of JavaScript.

  • Students will be able to organize their own JavaScript experiences and thoughts.

  • You can establish a logical foundation for JavaScript technologies.

  • You can broaden your perspective on the entirety of JavaScript.

  • You will gain confidence in JavaScript.

  • You can prepare for JavaScript technical interview questions.


Aspects of utilizing expected technical interview questions and solutions

JavaScript interview candidates

You can organize potential technical interview questions by utilizing expected questions and their solutions.

JavaScript Interviewer

You can derive technical interview questions by utilizing expected interview questions and their solutions
You can ask follow-up questions incrementally based on the depth of the candidate's answers.

All students

You can organize what you have learned in the course and what you already know by using the expected technical interview questions and their solutions.

Notes before taking the course

Practice Environment

  • Latest Chrome browser


Learning Materials

  • You can download the source code used for explanations in the course.

  • Section 1 -> Download source files for No. 3

Prerequisites and Important Notes

  • JavaScript Syntax


Recommended for
these people

Who is this course right for?

  • Developers who want to strengthen their JavaScript fundamentals.

  • A developer who aspires to be a JavaScript legend

  • A developer preparing for a technical interview

  • An interviewer asking technical interview questions

Need to know before starting?

  • JavaScript Syntax

Hello
This is

9,737

Learners

407

Reviews

337

Answers

4.8

Rating

13

Courses

I am a developer who loves software development.

Email: tonextday@gmail.com

Videos: 11
Rust Build-up: Building a Solid Foundation

Cleanup JavaScript: Jump-up
Cleanup JavaScript: Base Build-up
JavaScript Beginner
JavaScript Intermediate/Advanced
Modern JavaScript (ES6+) Basics
Modern JavaScript (ES6+) Advanced
DOM Basics
DOM Interaction
React Beginner, Complete React
Requirements Analysis Implementation Methods
JavaScript Machine Learning TensorFlow.js

Books: 9 Volumes
Immersion! JavaScript
ECMAScript 6
HTML5
DOM Scripting
JavaScript Regular Expressions
Event Process Modeling for Requirements Analysis
Machine Learning TensorFlow.js,
Ajax Utilization, Complete Analysis of prototype.js
I am the first domestic author for 8 out of these 9 books.
In particular, there were no books related to "Machine Learning TensorFlow.js" on amazon.com at the time of its publication.

Among the 9 books I've authored, including "x Utilization" and "Complete Analysis of prototype.js," 8 are the first of their kind by a domestic author. In particular, when "Machine Learning TensorFlow.js" was published, there were no related books available on amazon.com.

Among the 9 books I have authored, including "x Utilization" and "Complete Analysis of prototype.js," 8 were the first of their kind by a domestic author. In particular, when "Machine Learning TensorFlow.js" was published, there were no related books available on amazon.com.

Curriculum

All

93 lectures ∙ (7hr 9min)

Course Materials:

Lecture resources
Published: 
Last updated: 

Reviews

All

4 reviews

4.8

4 reviews

  • gy56012950님의 프로필 이미지
    gy56012950

    Reviews 12

    Average Rating 5.0

    5

    45% enrolled

    Every time I interview JS, I need fundamental skills, so I took the course and realized my shortcomings and am studying. Thank you.

    • tonextday
      Instructor

      It is the right choice. You will definitely be rewarded for your time and skills in building the foundation. I wish you a strong development.

  • chwldlfzh님의 프로필 이미지
    chwldlfzh

    Reviews 4

    Average Rating 5.0

    5

    26% enrolled

    Wow~~ This is really the epitome of JavaScript!! I was so moved by the lecture that I had to write a review right away. If you are preparing for a technical interview, I highly recommend this lecture! It is really helpful because it provides expected problems and solutions. Especially when explaining the ECMA spec, there were many moments when I hit my knee and thought, "Oh, that's what it means..." It wasn't that I didn't know because the spec was in English, but that I only saw what I knew. It was a really thankful lecture because I was able to learn the instructor's deep insight. I listened to it over and over again, and I made a promise to myself to make it perfect! Thank you for the great lecture!

  • fined0006806님의 프로필 이미지
    fined0006806

    Reviews 36

    Average Rating 4.8

    4

    71% enrolled

    The explanation was a bit difficult and somewhat stiff... but it was still useful.

    • kth33499379님의 프로필 이미지
      kth33499379

      Reviews 3

      Average Rating 5.0

      5

      11% enrolled

      $13.20

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