react-use/docs/useKeyboardJs.md
2019-08-02 12:19:20 +08:00

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# `useKeyboardJs`
React UI sensor hook that detects complex key combos like detecting when
multiple keys are held down at the same time or requiring them to be held down in a specified order.
Via [KeyboardJS key combos](https://github.com/RobertWHurst/KeyboardJS).
Check its documentation for further details on how to make combo strings.
## Usage
```jsx
import useKeyboardJs from 'react-use/lib/useKeyboardJs';
const Demo = () => {
const [isPressed] = useKeyboardJs('a + b');
return (
<div>
[a + b] pressed: {isPressed ? 'Yes' : 'No'}
</div>
);
};
```
Note: Because of dependency on `keyboardjs` you have to import this hook directly like shown above.
## Requirements
Install [`keyboardjs`](https://github.com/RobertWHurst/KeyboardJS) peer dependency:
```bash
npm add keyboardjs
# or
yarn add keyboardjs
```
## Reference
```js
useKeyboardJs(combination: string | string[]): [isPressed: boolean, event?: KeyboardEvent]
```