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Need to watch for DOM changes without running expensive polling logic?

Use a MutationObserver, it tracks changes to elements in real time.
✅ Efficient
✅ Native
✅ Great for components that react to dynamic content

How it works + what to observe 👇
developer.mozilla.org/en-US/do

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MutationObserver - Web APIs | MDN

The MutationObserver interface provides the ability to watch for changes being made to the DOM tree. It is designed as a replacement for the older Mutation Events feature, which was part of the DOM3 Events specification.

developer.mozilla.org · MDN Web Docs

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