---
title: initMutationEvent
framework: webkitjs
role: symbol
role_heading: Instance Method
path: webkitjs/mutationevent/1634443-initmutationevent
---

# initMutationEvent

## Declaration

```data
void initMutationEvent(
    optional DOMString type, 
    optional boolean canBubble, 
    optional boolean cancelable, 
    optional Node? relatedNode, 
    optional DOMString prevValue, 
    optional DOMString newValue, 
    optional DOMString attrName, 
    optional unsigned short attrChange
);
```