# keyUp

Release a hardware button.

```js
keyUp(keyType)
```

## Arguments

| Argument | Type | Meaning |
| --- | --- | --- |
| `keyType` | number | A KEY_TYPE constant. |

## Returns

No return value (`undefined`).

## Example

```js
keyDown(KEY_TYPE.HOME_BUTTON);
keyUp(KEY_TYPE.HOME_BUTTON);
```

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