javaだけど動画
https://www.linkedin.com/learning/programming-foundations-design-patterns-2/using-the-observer-pattern
分かりやすい
https://loredanacirstea.github.io/es6-design-patterns/#observer
github
https://github.com/fbeline/design-patterns-JS
javaだけど動画
https://www.linkedin.com/learning/programming-foundations-design-patterns-2/using-the-observer-pattern
分かりやすい
https://loredanacirstea.github.io/es6-design-patterns/#observer
github
https://github.com/fbeline/design-patterns-JS