This textbook is for beginners in front-end coding and covers HTML, CSS, and JavaScript. Everything is done through pure coding, and it explains from the basics so that you can learn coding while understanding the principles and concepts of each. 'Coding-Level-Up' provides various examples and supplementary videos so that you can self-learn from the basics of web page production. [ Video Introduction ] For Chapters 1 and 2, videos are prepared so that you can follow along with the installation and execution while watching YouTube. From Chapter 3 onwards, it would be most efficient to use the book while watching YouTube videos to preview or review your learning. The introductory series will consist of 'Spring-Summer-Autumn-Winter' seasons, and this book is the first in the series, the 'Spring' season book.

To create a webpage, you need to be able to build individual components piece by piece. Let's create UI components using pure coding. Recommended for those who know how to use HTML, CSS, and JavaScript.