Do it! Node.js Programming (Revised Edition)

A current database expert from a major global company generously shares 20 years of corporate practice and teaching experience!

Grab your keyboard and practice, and you'll master the three major web development skills!

Running without fail towards the core of the server with Node.js + JavaScript + Express + MongoDB!

Practical JavaScript Grammar for Frontend and Backend Let's finish it in one book with the #1 web book author!

Let’s learn about PWA (Progressive Web App), the next-generation mobile strategy of global companies!

If you want to build a solid web foundation, come here!

Start drawing/calligraphy/designing with the authors of “Do it! Square iPad Drawing with Procreate”!

An Android course taught directly by Dr. Jae-gon Jung, the author of the #1 best-selling Android book!! (2018 Revised Edition)

In this course, you will be able to create a Reddit website from scratch, step by step.

Running without fail towards the core of the server with Node.js + JavaScript + Express + MongoDB!

If Java has Spring and Python has Django, Node has NestJS! Learn Node's professional backend NestJS and Node's object-oriented programming and design patterns! This course is a membership subscription course, and if you purchase it once, you can take the continuously added NestJS techniques, DB, testing, etc.

Learn how to install your own DB, store and update data, and even implement a chat feature using sockets without using Firebase's real-time database.

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.

Asynchronous programming is a core concept in JavaScript. This course will help you fully understand and use asynchronous programming.

A smooth-flowing guide to Express.js, from basics to real-world application! A backend journey to truly master everything from basic server concepts to completing a CRUD project through hands-on implementation.

Understanding Spring Boot + React.js Login (+Social) Service is a course designed to help you deeply understand the authentication flow between frontend and backend, by directly implementing a practical login system that includes JWT-based authentication and social login (Kakao/Google). The frontend is built on React.js, and the backend on Spring Boot, enabling you to learn step by step the practices used in real service environments, such as the Access Token + Refresh Token approach, user state management using HttpOnly Cookie and Redux, Role-based authorization, and social login integration.

Build a solid foundation for your first start with Redis A to Z! Everything about Redis, explained so easily and fun that even a high school student can understand it perfectly.

The days of feeling relieved by black-box code spat out by AI are over. By piercing through the physical limitations of computers and the inner workings of the Node.js core engine, we provide you with the engineering control to remain unshakable in the face of any traffic surge.

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!

This is a free 1-hour introductory lecture to get you started with just the OpenAI API. You will quickly master core concepts including the Responses API, JSON response handling, validation, idempotency, and logs, while learning a practical backend workflow that allows for immediate testing without the need for external service keys.

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.

You can understand the JavaScript engine V8! You can get hints on how to write more efficient code.

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