<ul><li>React components can maintain active event listeners without re-registering them on every render.</li><li>The empty dependency array ([]) in useEffect means it runs once, yet the component still updates when the mouse moves.</li><li>The browser's event system manages event listeners and triggers callbacks, while React's rendering system handles component updates and UI rendering.</li><li>Always remember to clean up event listeners on component unmount to avoid memory leaks.</li></ul>

Understanding React's useEffect and Event Listeners: A Deep Dive

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