The Document Object Model (DOM) is a critical part of web development, enabling dynamic content updates.
Inefficient DOM manipulation can lead to sluggish performance in complex applications.
Common performance pitfalls include multiple reflows from sequential updates, layout thrashing, inefficient event listeners, expensive CSS changes, and unoptimized animations.
Optimization techniques include batch updates with DocumentFragment, separating reads and writes, using event delegation for event listeners, using classes instead of inline styles for CSS changes, using GPU-accelerated properties for animations, utilizing virtual DOM for library/framework approach, debouncing/throttling high-frequency updates, and hiding elements during batch updates.