Answer
Optimization includes batching DOM updates, using requestAnimationFrame, minimizing reflows/repaints, document fragments, and caching DOM references. Reduces performance bottlenecks in large-scale applications.
Quick Answer
DOM optimization at scale: virtualize long lists (render only visible items — react-window, virtual-scroll). Batch DOM writes with DocumentFragment. Use requestAnimationFrame for visual updates. Avoid inline style changes (prefer class toggling). Minimize reflow triggers — read all layout properties before writing any. Debounce scroll/resize handlers.
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SugharaIQ Editorial Team
Verified Answer
This answer has been peer-reviewed by industry experts holding senior engineering roles to ensure technical accuracy and relevance for modern interview standards.
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Source: SugharaIQ