Extendable MessageEvent() 构造函数创建新 ExtendableMessageEvent 对象实例。

句法

var extendableMessageEvent = new ExtendableMessageEvent(type, init);
					

参数

type
DOMString that defines the type of the message event being created.
init 可选
An initialisation object, which should contain the following parameters:
  • data : The event's data — this can be any data type.
  • origin : A DOMString that defines the origin of the corresponding service worker's environment settings object.
  • lastEventId : A DOMString that defines the last event ID of the event source.
  • source Client , ServiceWorker or MessagePort that sent the message.
  • ports : An array containing the MessagePort objects connected to the channel sending the message.

范例

var init = {
             data : 'hello message',
             source : MessagePortReference,
             ports : MessagePortListReference
           }
var myEME = new ExtendableMessageEvent('message', init);
					

规范

规范 状态 注释
服务工作者
The definition of 'ExtendableMessageEvent()' in that specification.
工作草案 初始定义。

浏览器兼容性

The compatibility table on this page is generated from structured data. If you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request. 更新 GitHub 上的兼容性数据
桌面 移动
Chrome Edge Firefox Internet Explorer Opera Safari Android webview Chrome for Android Firefox for Android Opera for Android Safari on iOS Samsung Internet
ExtendableMessageEvent() 构造函数 Chrome ? Edge ? Firefox 45 注意事项
45 注意事项
Extended Support Releases (ESR) before Firefox 78 ESR do not support service workers and the Push API.
IE 不支持 No Opera ? Safari 不支持 No WebView Android 不支持 No Chrome Android ? Firefox Android 45 Opera Android ? Safari iOS 不支持 No Samsung Internet Android ?

图例

完整支持

完整支持

不支持

不支持

兼容性未知 ?

兼容性未知

实验。期望将来行为有所改变。

实验。期望将来行为有所改变。

见实现注意事项。

另请参阅

元数据

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