---
title: buttonNumber
framework: webkit
role: symbol
role_heading: Instance Property
path: webkit/wknavigationaction/buttonnumber
---

# buttonNumber

The number of the mouse button that caused the navigation request.

## Declaration

```swift
var buttonNumber: UIEvent.ButtonMask { get }
```

```swift
var buttonNumber: Int { get }
```

## See Also

### Inspecting user actions

- [modifierFlags](webkit/wknavigationaction/modifierflags.md)