---
title: "focus(for:completionHandler:)"
framework: webkit
role: symbol
role_heading: Instance Method
path: "webkit/wkwebextensionwindow/focus(for:completionhandler:)"
---

# focus(for:completionHandler:)

Called to focus the window.

## Declaration

```swift
optional func focus(for context: WKWebExtensionContext, completionHandler: @escaping ((any Error)?) -> Void)
```

```swift
optional func focus(for context: WKWebExtensionContext) async throws
```

## Parameters

- `context`: The context in which the web extension is running.
- `completionHandler`: A block that must be called upon completion. It takes a single error argument, which should be provided if any errors occurred.

## Discussion

Discussion No action is performed if not implemented.