Advanced Hook [upd] 🆕 Best Pick

This custom hook elegantly solves the "compare current vs previous" problem without extra state. Sometimes a parent component needs to call a child’s method (e.g., focus an input, reset a form, start an animation). While React discourages imperative code, advanced cases justify it.

Enter . These are not just obscure APIs; they are architectural patterns and built-in tools ( useReducer , useCallback , useMemo , useRef , useLayoutEffect , useImperativeHandle , useDebugValue , and custom hooks) that, when mastered, transform your code from "working" to elegant, predictable, and highly performant . advanced hook

This keeps the child’s internal implementation private while exposing only the necessary imperative API. The pinnacle of advanced hooks is creating your own. A custom hook is a JavaScript function whose name starts with use and may call other hooks. It allows you to extract component logic into reusable, testable units. Example: useDebouncedSearch function useDebouncedSearch(query, delay = 300) const [results, setResults] = useState([]); const [isLoading, setIsLoading] = useState(false); useEffect(() => if (!query) return; const handler = setTimeout(async () => setIsLoading(true); const data = await searchAPI(query); setResults(data); setIsLoading(false); , delay); return () => clearTimeout(handler); , [query, delay]); This custom hook elegantly solves the "compare current

Now any component can add debounced search with two lines of code. Custom hooks compose other advanced hooks, hiding complexity beautifully. Even advanced developers fall into traps: The pinnacle of advanced hooks is creating your own