Avoid unnecessary useCallback and useEffect dependencies to improve performance and code clarity. When event handlers are only used within a useEffect, define them locally inside the effect rather than using useCallback. This eliminates the need for the callback hook and reduces re-renders. Additionally, understand that refs don't need to be included in...
Avoid unnecessary useCallback and useEffect dependencies to improve performance and code clarity. When event handlers are only used within a useEffect, define them locally inside the effect rather than using useCallback. This eliminates the need for the callback hook and reduces re-renders. Additionally, understand that refs don’t need to be included in useEffect dependency arrays since they maintain stable references across renders.
Example of optimization:
// Instead of this:
const handleDocumentClick = useCallback(() => {
onClose();
}, [onClose]);
useEffect(() => {
document.addEventListener('click', handleDocumentClick);
return () => document.removeEventListener('click', handleDocumentClick);
}, [handleDocumentClick]);
// Do this:
useEffect(() => {
const handleDocumentClick = () => {
onClose();
};
document.addEventListener('click', handleDocumentClick);
return () => document.removeEventListener('click', handleDocumentClick);
}, [onClose]); // refs like nodeRef don't need to be dependencies
This approach reduces unnecessary re-renders and makes the code more readable by keeping related logic together.
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