> For the complete documentation index, see [llms.txt](https://racoon-js.gitbook.io/en/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://racoon-js.gitbook.io/en/api/object/allowunknown.md).

# allowUnknown

allowUnknown()

## Effect

By default, `object` doesn't allow unknown keys exist. If you want unknown keys to be allowed, you can call `allowKnown`.

## Arguments

None

## Example

```javascript
const schema1 = racoon.object({
  name: racoon.string()
});
schema1.validate({ name: 'Jack' }); // pass
schema1.validate({ name: 'Jack', age: 22 }); // fail

const schema1 = racoon.object({
  name: racoon.string()
}).allowUnknown();
schema1.validate({ name: 'Jack' }); // pass
schema1.validate({ name: 'Jack', age: 22 }); // pass
```