---
title: "didChangeTabProperties(_:for:)"
framework: webkit
role: symbol
role_heading: Instance Method
path: "webkit/wkwebextensioncontext/didchangetabproperties(_:for:)"
---

# didChangeTabProperties(_:for:)

Called by the app when the properties of a tab are changed to fire appropriate events with only this extension.

## Declaration

```swift
func didChangeTabProperties(_ properties: WKWebExtension.TabChangedProperties, for changedTab: any WKWebExtensionTab)
```

## Parameters

- `properties`: The properties of the tab that were changed.
- `changedTab`: The tab whose properties were changed.

## Discussion

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