The "Chofu Today" section on the top page is a bulletin board that summarizes the date, remaining days in the year, holidays, ...

By completing this practice, I learned how to: Detect keyboard interactions using JavaScript. Handle keyboard events using event listeners. Access information from the JavaScript event object.

I use Claude Code as the core of my development, and I am developing and operating over 20 products simultaneously by myself.

Discover the best programming books in 2026 for software engineering, algorithms, system design, interviews, refactoring, and ...