---
title: "createTreeWalker(_:whatToShow:filter:expandEntityReferences:)"
framework: webkit
role: symbol
role_heading: Instance Method
path: "webkit/domdocument/createtreewalker(_:whattoshow:filter:expandentityreferences:)"
---

# createTreeWalker(_:whatToShow:filter:expandEntityReferences:)

## Declaration

```swift
func createTreeWalker(_ root: DOMNode!, whatToShow: UInt32, filter: (any DOMNodeFilter)!, expandEntityReferences: Bool) -> DOMTreeWalker!
```