| Properties |
|---|
| any | - data
- The data attribute must return the value
it was initialized to. When the object is created, this attribute must be initialized to null. It
represents the message being sent.
|
| DOMString | - lastEventId
- The lastEventId attribute must
return the value it was initialized to. When the object is created, this attribute must be
initialized to the empty string. It represents, in server-sent events, the last event ID string of the event source.
|
| DOMString | - origin
- The origin attribute must return the
value it was initialized to. When the object is created, this attribute must be initialized to the
empty string. It represents, in server-sent events and cross-document
messaging, the origin of the document that sent the message (typically the
scheme, hostname, and port of the document, but not its path or fragment identifier).
|
| MessagePort[]? | - ports
- The ports attribute must return the
value it was initialized to. When the object is created, this attribute must be initialized to
null. It represents, in
cross-document messaging and channel messaging, the
MessagePort array being sent, if any.
|
| (WindowProxy or MessagePort) | - source
- The source attribute must return the
value it was initialized to. When the object is created, this attribute must be initialized to
null. It represents, in cross-document messaging, the WindowProxy of the
browsing context of the Window object from which the message came; and
in the connect events used by shared workers, the newly connecting
MessagePort.
|