> For the complete documentation index, see [llms.txt](https://atomico.gitbook.io/doc/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://atomico.gitbook.io/doc/api/hooks/usehost.md).

# useHost

Hook that creates a reference that curren is the instance of the webcomponent.

## Syntax

```javascript
const refHost = useHost();
```

Returns the instance of the webcomponent in reference format, this reference allows to extend behaviors when creating customHooks.

## Example

```typescript
import { useHost, useEffect } from "atomico";

function useListener(type: string, callback: (ev: Event) => void) {
  const ref = useHost();
  useEffect(() => {
    const { current } = ref;
    current.addEventListener(type, callback);
    return () => current.removeEventListener(type, callback);
  }, []);
}
```

From the example we can highlight that **useListener is a customHook** that allows listening to an event from the webcomponent without the need to link said event to the VirtualDOM.


---

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