leonardomso / 33-js-concepts

- Complete event delegation documentation covering: - What is event delegation and how it works - event.target vs event.currentTarget differences - Element.matches() and Element.closest() usage - Handling dynamic/future elements automatically - Performance benefits of delegation pattern - Common patterns: action buttons, tabs, accordions - Limitations (non-bubbling events, stopPropagation) - Common mistakes and how to avoid them - Add 13 comprehensive tests covering all code examples - Include 4 MDN references, 4 articles, 3 video resources - SEO optimized with 30/30 score