---
title: webkitInitMessageEvent
framework: webkitjs
role: symbol
role_heading: Instance Method
path: webkitjs/messageevent/1633931-webkitinitmessageevent
---

# webkitInitMessageEvent

## Declaration

```data
void webkitInitMessageEvent(
    optional DOMString typeArg, 
    optional boolean canBubbleArg, 
    optional boolean cancelableArg, 
    optional any dataArg, 
    optional USVString originArg, 
    optional DOMString lastEventIdArg, 
    optional, 
    optional sequence <MessagePort> messagePorts
);
```