Frontend Masterclass

Welcome to the Frontend Master Class

Many developers find themselves reaching a point where they feel they are no longer growing. They wonder what more they should study, what they are lacking, and what kind of considerations developers working at large corporations or companies providing entirely different services keep in mind while developing.

The Frontend Master Course combines everything from the basics to the modules and programming methodologies that form the core framework of modern frontend development. Through this course, starting from GoF methodologies, we cover modern code patterns and usage of React and Next.js, state management strategies, design patterns, code structure, animation libraries, and testing tools—providing content that helps you advance from a beginner to an intermediate and advanced developer. It covers JavaScript, React, functional programming, object-oriented programming, and Next.js in depth, while Vue.js and Svelte are hardly covered.

Who is this course for?

1. Those with at least one year of experience in frontend study or professional work.

This is an advanced course for those who have a basic understanding of HTML, CSS, and JavaScript and have experience developing simple web applications. It is suitable for those who wish to build deeper frontend development capabilities based on the foundational knowledge they have already acquired.

2. Professionals who feel a lack of progress due to repetitive code patterns

Do you feel like your growth has stalled while writing similar code every day? This course presents various patterns and approaches to efficiently solve complex problems frequently encountered in the field. You can learn advanced techniques that improve code quality and enhance development productivity.

3. Those who need to learn about the deep specifications and development patterns of JavaScript

Do you want to go beyond simply using JavaScript and write more efficient code based on a deep understanding of the language? In this course, we cover advanced concepts such as JavaScript's internal workings, asynchronous programming, functional programming, and design patterns in detail with practical examples.

Detailed Curriculum

Notes before taking the course

To all students

Hello, I'm Sanghoon Han.

I created my first product when I was in the second year of middle school. I didn't know then that the website I built would become a turning point in my life. More than a thousand people visited that first website on its very first day, and I received encouragement and praise from dozens of anonymous online users. Unable to forget that experience, I have continued to make numerous attempts in the web field.

Ever since tasting that sweet moment of success, I have faced endless cycles of challenge and failure. I spent years developing in a small room to create the products I envisioned, and through that process, I came to understand the pain and difficulty of developing alone better than anyone else. Because I know those emotions and that loneliness so well, I have consistently recorded and shared my journey with the world for over 10 years. I wanted to deliver a message to those working in lonely environments like mine, where there is no one to teach them. I wanted to tell them, "You are not alone."

In my professional career running a development agency, I have met with dozens of companies, conducted numerous transactions, and built many products. Through that process, I was able to observe the development directions, philosophies, and priorities of each company. I also saw people suffering from poor code patterns and toxic development cultures under a few authoritative developers in small environments. The Korean development market may appear to be doing the same kind of work, but it is growing in completely different ways.

If you are leading a project in a small company, or if you are starting to have doubts and feel anxious about the way you have been developing so far, this lecture will be helpful. I do not insist only on the methods I have taught. I want to tell you the story of a developer who has experienced it first—sharing the records of how I have learned, thought about code, and contemplated better code throughout my life.

There is no such thing as "truth" when it comes to code. Developers must make countless trade-offs and find the better choice depending on the situation. In that process, while a junior developer might make a decision based on only a few options, a senior developer can interpret problems with deeper insight. Writing code in a different form even if it appears to function the same way, and writing it in a more readable form, is achieved through contemplation and experience.

Through this course, you will be able to look at the code you've written in the past with a different perspective. When you look at code with new eyes, you start to consider things you've never thought of before, and in the process of resolving those concerns, you can create better code. This course contains the challenges and solutions that countless senior developers have experienced. I hope you gain your own insights by observing the solutions of those who have grappled with these issues before you.