---
title: mainFrameNavigation
framework: webkit
role: symbol
role_heading: Instance Property
path: webkit/wknavigationaction/mainframenavigation
---

# mainFrameNavigation

## Declaration

```swift
var mainFrameNavigation: WKNavigation? { get }
```

## Discussion

Discussion The most recent main frame navigation that took place that encompasses this navigation action. If this WKNavigationAction represents a request to open a new WKWebView or it represents a frame load that is not in the main frame of an existing WKWebView, then mainFrameNavigation will be nil.