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CloseEvent
Baseline
Widely available
This feature is well established and works across many devices and browser versions. It’s been available across browsers since July 2015.
A CloseEvent is sent to clients using WebSockets when the connection is closed. This is delivered to the listener indicated by the WebSocket object's onclose attribute.
This interface also inherits properties from its parent, Event.
CloseEvent.code Read only
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Returns an unsigned short containing the close code.
CloseEvent.reason Read only
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Returns a string indicating the reason the server closed the connection. This is specific to the particular server and sub-protocol.
CloseEvent.wasClean Read only
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Returns a boolean value that Indicates whether or not the connection was cleanly closed.
This interface also inherits methods from its parent, Event.