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Q300

Question 300 of 445

Part 9: React Hooks Deep Dive (262 - 316)

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React & Modern Frontend (445 Qs)•Part 9: React Hooks Deep Dive (262 - 316)

When should you use useImperativeHandle?

The useImperativeHandler hook will be used in below cases:

  • You want to expose imperative methods from a child component
    • Custom input controls exposing focus, clear, or validate methods
    • Modal components exposing open() and close() methods
    • Scroll containers exposing scrollToTop() or scrollToBottom() methods
  • You want to hide internal implementation but provide controlled external access.
  • You're building reusable component libraries (e.g., inputs, modals, form controls).

Practical Code Example

jsx
// When to use useImperativeHandle:
// Exposing specialized imperative controls to parent components (focus, reset, scroll):
useImperativeHandle(ref, () => ({
  focus: () => inputRef.current.focus(),
  clear: () => { inputRef.current.value = ''; }
}));