在此页

• 句法
• 范例
• 规范
• 浏览器兼容性
• 另请参阅
• 相关话题

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

句法

var messageEvent = new MessageEvent(type, init);
					

参数

type

类型对于 MessageEvent that will be created. This can be one of XXX

init 可选

A dictionary object that can contain the following properties:

• data : The data you want contained in the MessageEvent. This can be of any data type, and will default to null if not specified.
• origin : A USVString representing the origin of the message emitter. This defaults to an empty string ("") if not specified.
• lastEventId : A DOMString representing a unique ID for the event. This defaults to an empty string ("") if not specified.
• source : An MessageEventSource (which can be a WindowProxy , MessagePort ，或 ServiceWorker object) representing the message emitter. This defaults to null if not set.
• ports : An array of MessagePort objects representing the ports associated with the channel the message is being sent through (where appropriate, e.g. in channel messaging or when sending a message to a shared worker). This defaults to an empty array ( [] ) if not specified.

范例

var myMessage = new MessageEvent('worker', {
  data : 'hello'
});
					

规范

规范	状态	注释
HTML 实时标准 The definition of 'MessageEvent()' in that specification.	实时标准

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
MessageEvent() 构造函数	Chrome 1	Edge 12	Firefox 4	IE 9	Opera ?	Safari 4	WebView Android 37	Chrome Android 18	Firefox Android ?	Opera Android ?	Safari iOS 3	Samsung Internet Android 1.0

图例

完整支持

完整支持

兼容性未知 ?

兼容性未知

另请参阅

• ExtendableMessageEvent — similar to this interface but used in interfaces that needs to give more flexibility to authors.

元数据

• 最后修改： Jun 13, 2020

相关话题

1. MessageEvent
2. 构造函数

   1. MessageEvent()
3. 特性

   1. data
   2. lastEventId
   3. origin
   4. ports
   5. source
4. 继承：

   1. 事件
5. HTML DOM 相关页面

   1. BeforeUnloadEvent
   2. DOMStringMap
   3. ErrorEvent
   4. GlobalEventHandlers
   5. HTMLAnchorElement
   6. HTMLAreaElement
   7. HTMLAudioElement
   8. HTMLBRElement
   9. HTMLBaseElement
   10. HTMLBaseFontElement
   11. HTMLBodyElement
   12. HTMLButtonElement
   13. HTMLCanvasElement
   14. HTMLContentElement
   15. HTMLDListElement
   16. HTMLDataElement
   17. HTMLDataListElement
   18. HTMLDialogElement
   19. HTMLDivElement
   20. HTMLDocument
   21. HTMLElement
   22. HTMLEmbedElement
   23. HTMLFieldSetElement
   24. HTMLFormControlsCollection
   25. HTMLFormElement
   26. HTMLFrameSetElement
   27. HTMLHRElement
   28. HTMLHeadElement
   29. HTMLHeadingElement
   30. HTMLHtmlElement
   31. HTMLIFrameElement
   32. HTMLImageElement
   33. HTMLInputElement
   34. HTMLIsIndexElement
   35. HTMLKeygenElement
   36. HTMLLIElement
   37. HTMLLabelElement
   38. HTMLLegendElement
   39. HTMLLinkElement
   40. HTMLMapElement
   41. HTMLMediaElement
   42. HTMLMetaElement
   43. HTMLMeterElement
   44. HTMLModElement
   45. HTMLOListElement
   46. HTMLObjectElement
   47. HTMLOptGroupElement
   48. HTMLOptionElement
   49. HTMLOptionsCollection
   50. HTMLOutputElement
   51. HTMLParagraphElement
   52. HTMLParamElement
   53. HTMLPictureElement
   54. HTMLPreElement
   55. HTMLProgressElement
   56. HTMLQuoteElement
   57. HTMLScriptElement
   58. HTMLSelectElement
   59. HTMLShadowElement
   60. HTMLSourceElement
   61. HTMLSpanElement
   62. HTMLStyleElement
   63. HTMLTableCaptionElement
   64. HTMLTableCellElement
   65. HTMLTableColElement
   66. HTMLTableDataCellElement
   67. HTMLTableElement
   68. HTMLTableHeaderCellElement
   69. HTMLTableRowElement
   70. HTMLTableSectionElement
   71. HTMLTemplateElement
   72. HTMLTextAreaElement
   73. HTMLTimeElement
   74. HTMLTitleElement
   75. HTMLTrackElement
   76. HTMLUListElement
   77. HTMLUnknownElement
   78. HTMLVideoElement
   79. HashChangeEvent
   80. 历史
   81. ImageData
   82. 定位
   83. MessageChannel
   84. MessagePort
   85. Navigator
   86. NavigatorGeolocation
   87. NavigatorID
   88. NavigatorLanguage
   89. NavigatorOnLine
   90. NavigatorPlugins
   91. PageTransitionEvent
   92. Plugin
   93. PluginArray
   94. PopStateEvent
   95. PortCollection
   96. PromiseRejectionEvent
   97. RadioNodeList
   98. Transferable
   99. ValidityState
   100. Window
   101. WindowBase64
   102. WindowEventHandlers
   103. WindowTimers