JavaScript: The Definitive Guide, 6th Edition

Name

ErrorEvent — an uncaught exception from a worker thread

Inherits from

Event

Synopsis

When an uncaught exception occurs in a Worker thread, and the exception is not handled by the onerror function in the WorkerGlobalScope, that exception causes a nonbubbling error event to be triggered on the Worker object. The event has an ErrorEvent object associated with it to provide details about the exception that occurred. Calling preventDefault() on the ErrorEvent object (or returning false from the event handler) will prevent the error from propagating further to containing threads and may also prevent it from being displayed in an error console.

Properties

readonly string filename

The URL of the JavaScript file in which the exception was originally thrown.

readonly unsigned long lineno

The line number within that file at which the exception was thrown.

readonly string message

A message describing the exception.