The error handler is executed when a connection with a websocket has been closed with prejudice (some data couldn't be sent for example).
| Property | Type | Description |
|---|---|---|
target Read only
| EventTarget | The event target (the topmost target in the DOM tree). |
type Read only
| DOMString | The type of event. |
bubbles Read only
| boolean | Does the event normally bubble? |
cancelable Read only
| boolean | Is it possible to cancel the event? |
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https://developer.mozilla.org/en-US/docs/Web/Events/error_websocket