Getting elements by ID is the most direct way to select specific HTML elements for manipulation, styling, or event handling. As the creator of CoreUI, a widely used open-source UI library, I’ve used element selection extensively for interactive component functionality. From my expertise, document.getElementById() is the fastest and most reliable method for selecting elements with unique IDs. This approach provides direct access to specific elements without the overhead of more complex selectors.

Removing CSS classes from elements dynamically enables state changes, interactive styling, and responsive design through JavaScript manipulation. As the creator of CoreUI, a widely used open-source UI library, I’ve implemented dynamic class removal in thousands of interactive components for modal closures, active states, and UI transitions. From my expertise, the most effective approach is using the classList.remove() method for safe and reliable class management. This method provides clean class removal without affecting other classes and handles non-existent class removal gracefully.

Adding CSS classes to elements dynamically enables interactive styling, state changes, and responsive design through JavaScript manipulation. As the creator of CoreUI, a widely used open-source UI library, I’ve implemented dynamic class manipulation in countless interactive components for state management and visual feedback. From my expertise, the most effective approach is using the classList.add() method for clean and reliable class management. This method provides safe class addition without affecting existing classes and handles duplicate prevention automatically.

Using useRef is essential for accessing DOM elements directly, storing mutable values, and integrating with third-party libraries in React applications. As the creator of CoreUI, a widely used open-source UI library, I’ve implemented useRef in countless React components for focus management, scroll positioning, and integrating with non-React libraries in enterprise applications. From my expertise, the most effective approach is to use useRef for DOM references and persistent value storage. This method provides direct DOM access without causing re-renders, making it perfect for imperative operations and performance-critical scenarios.