Optional
initializer: CloseEventInitReadonly
bubblesReadonly
cancelableReturns true or false depending on how event was initialized. Its return value does not always carry meaning, but true can indicate that part of the operation during which event was dispatched, can be canceled by invoking the preventDefault() method.
Readonly
codeReturns the WebSocket connection close code provided by the server.
Readonly
composedReturns true or false depending on how event was initialized. True if event invokes listeners past a ShadowRoot node that is the root of its target, and false otherwise.
Optional
Readonly
currentReturns the object whose event listener's callback is currently being invoked.
Readonly
defaultReturns true if preventDefault() was invoked successfully to indicate cancelation, and false otherwise.
Readonly
eventReturns the event's phase, which is one of NONE, CAPTURING_PHASE, AT_TARGET, and BUBBLING_PHASE.
Readonly
isReturns true if event was dispatched by the user agent, and false otherwise.
Readonly
reasonReturns the WebSocket connection close reason provided by the server.
Readonly
returnOptional
Readonly
srcReadonly
timeReturns the event's timestamp as the number of milliseconds measured relative to the time origin.
Readonly
typeReturns the type of event, e.g. "click", "hashchange", or "submit".
Readonly
wasReturns true if the connection closed cleanly; false otherwise.
Static
Readonly
AT_Static
Readonly
BUBBLING_Static
Readonly
CAPTURING_Static
Readonly
NONEReturns the invocation target objects of event's path (objects on which listeners will be invoked), except for any nodes in shadow trees of which the shadow root's mode is "closed" that are not reachable from event's currentTarget.
Returns true or false depending on how event was initialized. True if event goes through its target's ancestors in reverse tree order, and false otherwise.
MDN Reference