Quick Answer
Optimize plugin performance: cache DOM lookups inside the plugin (var $children = $el.children()), process each element independently in this.each() without cross-element DOM queries, use event delegation for child elements, store computed values in .data() to avoid recomputing on each call, and lazy-initialize heavy resources only when the plugin is first used.
Answer
Cache DOM references. Limit reflows and repaints. Use event delegation when possible. Important for large DOM or dynamic content.
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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.
