use-debounced-state

Debounce value changes with minimal renders

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Source

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Docs

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Package

@mantine/hooks

Usage

use-debounced-state hook debounces value changes. This can be useful in case you want to perform a heavy operation based on react state, for example, send search request. Unlike use-debounced-value it is designed to work with uncontrolled components.

Enter value to see debounce effect

Debounced value: [empty string]

import { useDebouncedState } from '@mantine/hooks';
import { TextInput, Text } from '@mantine/core';

function Demo() {
  const [value, setValue] = useDebouncedState('', 200);

  return (
    <>
      <TextInput
        label="Enter value to see debounce effect"
        defaultValue={value}
        style={{ flex: 1 }}
        onChange={(event) => setValue(event.currentTarget.value)}
      />

      <Text>Debounced value: {value}</Text>
    </>
  );
}

Differences to use-debounce-value

You do not have direct access to the non-debounced value.
It is used for uncontrolled inputs (defaultValue prop instead of value), e.g. does not render with every state change like a character typed in an input.
It does not work with custom state providers or props, and it uses useState internally.

Leading update

You can immediately update value with first call with { leading: true } options:

Enter value to see debounce effect

Debounced value: [empty string]

import { useDebouncedState } from '@mantine/hooks';
import { TextInput, Text } from '@mantine/core';

function Demo() {
  const [value, setValue] = useDebouncedState('', 200, { leading: true });

  return (
    <>
      <TextInput
        label="Enter value to see debounce effect"
        defaultValue={value}
        style={{ flex: 1 }}
        onChange={(event) => setValue(event.currentTarget.value)}
      />

      <Text>Debounced value: {value}</Text>
    </>
  );
}

Definition

function useDebouncedState<T = any>(
  defaultValue: T,
  wait: number,
  options?: {
    leading: boolean;
  }
): readonly [T, (newValue: T) => void];

Go back

use-counter – @mantine/hooks

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use-debounced-value – @mantine/hooks

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