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What are delegated events and why use them?

Mid JQuery
Quick Answer Delegated events attach to an ancestor and filter by a selector at event time: $("table").on("click", "td", fn). The event bubbles from td up to table; jQuery checks if event.target matches "td". Benefit: works for dynamically added td elements, requires only one listener regardless of how many tds exist.

Answer

Delegated events attach listener to parent:
$('#parent').on('click', '.child', handler)

Benefits:
• Better memory usage
• Handles dynamically added elements
S
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

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