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How do you prevent memory leaks in jQuery?

Mid JQuery
Quick Answer jQuery memory leaks: event listeners not removed (use .off() or let jQuery remove them when element is .remove()), data stored with .data() on removed elements (jQuery 3 handles this automatically), closures in handlers capturing large objects. Always call .remove() instead of removing DOM directly - jQuery cleans up events and data. Destroy plugins on teardown.

Answer

Remove unused event handlers with .off().
Clear timers/intervals.
Avoid unused references inside closures.
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