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If you want to understand TypeScript properly, you should read the official documentation at least once, right? This lecture will convey only the important parts of the documentation in an easy-to-understand manner, and also teach you the content you need in practice!

We will teach you everything from basic concepts to situational test writing methods and advanced testing knowledge so that you can master everything about front-end unit testing.

This course is made with the exclusive curriculum of Coding Bootcamp. It consists of the most basic and practical contents. Start with this course, ‘Anyone can change careers to become a developer.’

Preparing for a coding interview? You've come to the right place! We've put together a session to dive deep into those JavaScript concepts that are usually hard to understand or remain confusing no matter how many times you hear them :) Are you ready to capture the interviewer's heart?

How long will you keep learning only to rotate boxes or spheres? You need to see the forest, not just the trees; if you only see the trees, your thinking won't grow. Escape being a complete beginner and experience the power of Three.js, which can be applied in practice and plays a role in the recently gaining attention field of digital twins. This is at a level applicable to work, not just for simple website spinning. Having the capability to create related models (glb, glTF...) in fields like manufacturing, defense, disaster management, and transportation will upgrade your domain expertise by another level. We also develop Node.js (Express) & Nest.js servers for On-Premises use on personal and company servers. Even with slight modifications to this course, you will be reborn as an IT talent along with creating powerful services. Don't be intimidated, challenge yourselves. It's not that difficult.^^

TypeScript: Core concepts, from basic to practical, all at once! Practical application through a project.

This course is for those who are preparing for a coding test using JavaScript. It is designed to teach step-by-step, from fun basic problems to advanced algorithms.

This is a basic JavaScript course taught in the easiest way possible by a third-year frontend developer.

In this course, we will practice developing programming thinking skills using JavaScript. Starting with a multiplication table web game, we will build various projects together, including Word Chain, Number Baseball, Response Rate Test, Tic-Tac-Toe, Lotto Generator, Rock-Paper-Scissors, Card Matching Game, Text RPG, Minesweeper, 2048, and Whack-a-Mole.

With this one course, you can learn the basics of popular Javascript frameworks and Typescript.

When you find yourself constantly updating Swagger documentation, aligning API specs, and repeatedly communicating with the frontend, you start to wonder, "Why am I doing the same thing twice?" I also felt similar frustrations in my professional experience, which led me to use GraphQL extensively and develop an interest in data-centric design. This course goes beyond simple GraphQL syntax; it explores the real-world problems it was created to solve, along with practical considerations like Resolver structures, the N+1 problem, and Federation. I've structured this course to help you naturally learn how to reduce communication costs between developers and design more flexible API structures.

Algorithms seem so difficult... Even students who are not good at math can finish the basics of algorithms in one go with this class! We will teach you the basic concepts needed to solve algorithms step by step, and even Codecamp's know-how on applying them to problems :)

The ultimate full-stack course that teaches even beginners about web, server, mobile apps, and machine learning!! If you're not sure where to start with development, I highly recommend this course. It's all done with just Javascript!

We will develop an avatar-based community app using React Native. You will learn the process of creating a high-quality community app that includes not only post creation but also comments/replies, likes, polls, and avatar generation.

After studying JavaScript, starting TypeScript often leads to getting stuck on the question, "Why should I use these types?" rather than the new syntax itself. This course covers everything from basic types to unions, type narrowing, generics, keyof, Pick, and Omit in a connected learning path. Additionally, practice problems are provided as separate missions so you can directly apply what you've learned. After completing the course, you will be able to understand the causes of type errors instead of blindly hiding them, safely reduce repetitive types, and express the intent of your code through types.

Firebase's SQL version! You can master the basics of Next.js full-stack development through Supabase!

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.

Completing an integration project between an API server built with Spring Boot (ver 3.4.x) and React 19 (with TypeScript)! Applying front-end to a back-end portfolio! A course written for working professionals (not a beginner-level course).

We have entered an era where it has become incredibly easy for web developers (especially React developers) to launch apps. With Expo, you can release both Android and iOS apps even faster. Let's become developers who can quickly launch apps through Expo.

The goal is to acquire basic knowledge of React Native for mobile app front-end development. This course is designed to enable non-experts to easily develop native mobile apps by utilizing languages/APIs with low entry barriers.

This course breaks down microservice architecture and distributed environments not as a mere list of technologies, but through the "design perspective" required in actual practice and interviews. Starting from the differences between Monolithic and MSA, it covers gradual migration strategies, Modular Monoliths, Clean Architecture, and Hexagonal Architecture step-by-step, clearly explaining why each choice is necessary and the resulting trade-offs. Furthermore, through hands-on practice, you can directly verify the intent of the structures and learn about core issues inevitably encountered in distributed environments—such as data consistency, transactions, inter-service communication, and fault tolerance—through realistic scenarios. Based on the actual questions and perspectives of a Kakao interviewer, this course aims to go beyond simple knowledge acquisition and elevate your very way of thinking about distributed systems to the next level.

This is a lecture about learning WebSocket communication for chat servers used in streaming platforms and actually implementing it.