Shallow GraphQL and Apollo

A kind and easy course that even absolute beginners can follow! The ultimate course that turns working developers into Git experts!

This course offers an easy grasp of data structure and algorithm core concepts via visual analogies and test tools. You'll directly implement from basics to sorting and searching, internalizing them as practical skills.

OODP's 25 patterns teach various methods for object-oriented software design.

Kind Course even coding novices can follow! The ultimate course that makes working developers JavaScript experts!

Learn React most easily and quickly with Explanation Master YALCO's rich and dense lectures!

An era where superficial learning won't let you survive. Java, delve deep and master it all at once!

It contains Node.js's must-know core principles and practical techniques before hands-on front-end/back-end development.

Quickly learn TypeScript's syntax and usage with the easiest explanation.

A friendly and easy course that even coding beginners can follow! The ultimate course helping current developers become HTML & CSS experts!

MySQL for non-majors! This lecture quickly skims through essential concepts with brief explanations, then allows you to learn MySQL hands-on by "playing" with examples on the site.

This is the easiest JavaScript tutorial for those who are starting to code in JavaScript.

Learn TypeScript syntax and usage quickly with the easiest explanations!

This course covers the essential principles and practical techniques of Node.js that you must know before diving into real-world front-end or back-end development.

Learn React the Easiest and Fastest Way!

You will learn various ways to design software in an object-oriented manner through the 25 patterns of OODP.

⚡ Short and sweet full 160-minute course! Copy and paste code from website to website and learn reactive programming with ReactiveX 😎

This course goes beyond simply using Express.js. You will rebuild its internal engine from start to finish, gaining hands-on experience with the real principles of how a server works. By directly creating each component of Express—such as routing, middleware, request–response objects, static file handling, and template rendering—you will grow as a server developer and truly understand how a framework operates at its core.

You will learn about what a node is, the latest JavaScript grammar, the node API, npm, the module system, databases, testing, and more. You will create a project using five practical examples. You will also deploy a service to the cloud and convert a node project to TypeScript.

When you're doing backend development, at some point you face this dilemma. As services grow and traffic increases, there comes a moment when simple REST communication and CRUD structures feel limiting. I experienced the same problem in real-world work and went through many trials and errors between performance and structural complexity. The solution I chose in that process was NATS. Its simple configuration based on a single binary, ultra-low latency performance in microseconds, and the fact that it provides just the right amount of essential features for real work—from Pub/Sub to Queue Groups and JetStream—made it a very practical choice in actual service environments. This course is not about listing NATS features. Based on the problems I faced in real work, I explain with code and flow diagrams which situations led me to choose NATS, why, and how I designed the architecture. This is a course designed to help everyone—from those new to messaging systems, to backend developers preparing for jobs, to senior developers contemplating better architectures—understand distributed systems and grow to the next level.

This course is a practical, hands-on course where you will build your own 'League of Legends Match History Search Site' using React.js and Node.js, utilizing the Riot Games API. Students will naturally learn through hands-on practice, following the project step-by-step, covering everything from basic API usage, integration of frontend (React.js) and backend (Node.js, Express.js), to match history data visualization, and implementing op.gg-style UI. Rather than focusing on complex theories, this course is code-centric, allowing you to quickly experience results by 'building it yourself' through hands-on practice.

This course covers the essential principles and practical techniques of Node.js that you must know before diving into real-world front-end or back-end development.

Learn React most easily and quickly with Explanation Master YALCO's rich and dense lectures!

"JS Build System, still confused?" The JS Build System's concepts and practices that never quite clicked, unified!

You will learn the basics and advanced usage of GraphQL, the next-generation API control technology, and gain real-world project experience through a virtual kiosk service created with GraphQL. The course has been partially updated to the latest version, apollo-server v4, as of February 2024.

We teach you the core principles of clean code through easy example code.

In this course, you will learn how to create a chatbot using the API provided by Google.

Through this course, you will learn not only concepts such as React and Node, but also how to practically create a website.

This article introduces the relationship between Nodejs, a server-side JavaScript language, and a database, and explains how to create web applications using Nodejs and a database.

Ladies A to Z for a solid start to Ladies! Everything about Ladies that is easy and fun to understand, even for high school students.