---
title: "initMutationEvent(_:canBubble:cancelable:relatedNode:prevValue:newValue:attrName:attrChange:)"
framework: webkit
role: symbol
role_heading: Instance Method
path: "webkit/dommutationevent/initmutationevent(_:canbubble:cancelable:relatednode:prevvalue:newvalue:attrname:attrchange:)"
---

# initMutationEvent(_:canBubble:cancelable:relatedNode:prevValue:newValue:attrName:attrChange:)

## Declaration

```swift
func initMutationEvent(_ type: String!, canBubble: Bool, cancelable: Bool, relatedNode: DOMNode!, prevValue: String!, newValue: String!, attrName: String!, attrChange: UInt16)
```