React useDebounceValue Hook
React useDebounceValue hook for debounced state management. Optimize search inputs and form values with TypeScript support for Next.js apps.
Search Inputs Too Aggressive?
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Ever built a search input and watched it fire API requests on every single keystroke? You know the drill—manage state for the search term, then another state for the debounced value, sync them with useEffect, handle cleanup. This free open source React useDebounceValue custom hook handles all that value debouncing complexity so you can focus on your search logic instead of managing multiple state values and effects in your React applications.
useDebounceValue showcase
Smart value debouncing with clean state management:
This free open source React hook simplifies debounced state with TypeScript support for modern JavaScript applications. Whether you're building search interfaces, form validation, or auto-save features in your Next.js projects, this React hook keeps your value updates optimized.
Installation
npx shadcn@latest add https://www.shadcn.io/registry/use-debounce-value.jsonnpx shadcn@latest add https://www.shadcn.io/registry/use-debounce-value.jsonpnpm dlx shadcn@latest add https://www.shadcn.io/registry/use-debounce-value.jsonbunx shadcn@latest add https://www.shadcn.io/registry/use-debounce-value.jsonWhy most debounced value implementations suck
Look, you could manage two separate state values—one for the immediate input and one for the debounced version—then sync them with useEffect in React applications. But after debugging the third "why is my search term out of sync" bug, you'll appreciate having this handled for you.
Most developers create separate useState calls for immediate and debounced values, then sync them with useEffect, causing complex state management in TypeScript components. Or they forget to handle cleanup when the delay changes, leading to race conditions and stale updates in Next.js projects.
The React hook gives you a single interface that behaves like useState but with built-in debouncing. No more managing multiple states, no more useEffect cleanup, no more stale closure bugs when the delay changes in JavaScript applications.
Real talk—value debouncing is different from callback debouncing in React development. You need the latest value, not just rate-limited function calls. This custom hook gets that right.
This free open source React hook handles the debounced state boilerplate while you focus on building features. Whether you're creating React applications, Next.js projects, or TypeScript codebases, this custom hook keeps your value management clean.
Features
- Debounced value state with configurable delay timing for optimized performance in React applications
- Function initializer support accepting both direct values and lazy initialization functions for TypeScript components
- Advanced debouncing options including leading, trailing, maxWait, and custom equality functions in Next.js projects
- TypeScript generics supporting any value type with complete type inference and safety
- Automatic equality checking with customizable comparison functions for complex objects in JavaScript applications
- Built on useDebounceCallback leveraging existing debounce infrastructure for consistency in React development
- Free open source designed for modern React development workflows
When you'll actually use this
Real talk—this isn't for every input in React applications. For basic form fields that don't trigger expensive operations, regular useState is fine. But when your input changes need to trigger heavy work, this React hook shines in Next.js projects.
Perfect for:
- Search inputs - Debounce API calls until user stops typing built with TypeScript
- Form validation - Delay expensive checks using React patterns in JavaScript applications
- Auto-save functionality - Batch save operations with configurable delays in React components
- Slider and range inputs - Smooth performance for continuous value changes in Next.js applications
- Filter controls - Debounce complex filtering on large datasets using TypeScript validation
- Live previews - Optimize preview updates without hammering renders in React development
- Username availability - Check availability without spamming the server in JavaScript frameworks
- Address lookup - Debounce geocoding or address validation calls in TypeScript projects
API Reference
useDebounceValue
useDebounceValue<T>(
initialValue: T | (() => T),
delay: number,
options?: UseDebounceValueOptions<T>
): [T, DebouncedState<(value: T) => void>]Parameters
| Parameter | Type | Description |
|---|---|---|
initialValue | T | (() => T) | The initial value or a function that returns the initial value |
delay | number | The delay in milliseconds before the value updates (default 500ms) |
options | UseDebounceValueOptions<T> | Optional configurations for debouncing behavior |
Options
| Option | Type | Default | Description |
|---|---|---|---|
leading | boolean | false | Invoke on the leading edge of the timeout |
trailing | boolean | true | Invoke on the trailing edge of the timeout |
maxWait | number | undefined | Maximum time function is allowed to be delayed |
equalityFn | (left: T, right: T) => boolean | === | Function to determine if value has changed |
Return Value
Returns an array with two elements:
| Index | Type | Description |
|---|---|---|
[0] | T | The current debounced value |
[1] | DebouncedState<(value: T) => void> | Function to update the value with debouncing |
Common gotchas
Initial value bypasses debouncing: The first render uses your initial value immediately in React applications. Debouncing only applies to subsequent updates. This is usually what you want, but worth knowing for TypeScript components.
Default equality checking is strict: By default it uses === comparison in Next.js projects. For objects or arrays, you might need a custom equality function to prevent unnecessary updates in JavaScript applications.
Setter behavior differs from useState: Unlike useState, calling the setter multiple times rapidly won't cause multiple state updates in React development—that's the point. But it means you can't rely on immediate state changes.
Function initializers work identically: You can pass a function as the initial value for lazy initialization, just like with useState in TypeScript projects. The pattern is identical.
Memory overhead with complex values: If you're debouncing large objects or arrays, the React hook keeps references to previous values for comparison. Consider using custom equality functions for deep comparison to prevent memory leaks.
Race conditions with rapid updates: Multiple rapid setValue calls can create race conditions in Next.js applications. The hook handles this, but be aware that only the final value survives the debounce period.
Related hooks you will also like
useDebounceCallback
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useEventCallback
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