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21 lines
370 B
Markdown
21 lines
370 B
Markdown
# `useUnmount`
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React lifecycle hook that calls a function when the component will unmount. Use `useEffectOnce` if you need both a mount and unmount function.
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## Usage
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```jsx
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import {useUnmount} from 'react-use';
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const Demo = () => {
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useUnmount(() => console.log('UNMOUNTED'));
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return null;
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};
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```
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## Reference
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```ts
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useUnmount(fn: () => void | undefined);
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```
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