> For the complete documentation index, see [llms.txt](https://racoon-js.gitbook.io/zh/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/zh/jie-kou-shuo-ming/object/allowunknown.md).

# allowUnknown

allowUnknown()

## 作用

默认情况下，`object`不允许未知属性存在，若要允许未知属性存在，则需要调用`allowKnown`。

## 参数

无

## 示例

```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
```