How do you handle focus and blur with event delegation?
focus and blur do not bubble, so traditional delegation does not work. Use focusin and focusout, which are the bubbling versions of focus and blur. They work with event delegation.
Verify This Answer
Cross-check this information using these trusted sources:
More FAQs in Event Delegation Common Pitfalls
Not checking e.target (handling irrelevant clicks), using the wrong parent (too high or too low), using non-bubbling events (focus/blur do not bubble), and stopPropagation breaking delegation.
Because the parent listener receives all clicks within the parent, including clicks on non-relevant areas. Check e.target.matches() or e.target.closest() to ensure the click was on a relevant child before handling.
If a child calls stopPropagation, the event does not bubble to the parent, so the parent's delegation listener never fires. Avoid stopPropagation when using delegation, or use it very carefully.
Still have questions?
Browse all our FAQs or reach out to our support team