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# didOpenTab(_:)

Called by the app when a new tab is opened to fire appropriate events with only this extension.

```
func didOpenTab(_ newTab: any WKWebExtensionTab)
```

## Parameters

`newTab`

The newly opened tab.

## Discussion

This method informs only the specific extension of the opening of a new tab. If the intention is to inform all loaded extensions consistently, you should use the respective method on the extension controller instead.

## See Also

[`didCloseTab:windowIsClosing:`](/documentation/WebKit/WKWebExtensionContext/didCloseTab:windowIsClosing:)

Called by the app when a tab is closed to fire appropriate events with only this extension.

[`openTabs`](/documentation/WebKit/WKWebExtensionContext/openTabs)

A set of open tabs in all open windows that are exposed to this extension.


---

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