How to select elements using querySelector in JavaScript
Posted inJavaScript

How to select elements using querySelector in JavaScript

Performance and maintainability in DOM manipulation depend on efficient selector structure, caching DOM selections, minimizing layout thrashing, using event delegation, and simplifying selectors. Best practices include batching DOM reads/writes and handling dynamic content with stateful classes for optimized responsiveness and scalability.
How to select elements by tag name in JavaScript
Posted inJavaScript

How to select elements by tag name in JavaScript

querySelectorAll enables complex CSS selector queries for precise DOM element targeting, returning a static NodeList that requires re-querying after DOM changes. Supports pseudo-classes, attribute selectors, and complements event delegation for efficient, clear JavaScript DOM manipulation.