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titleOptional
options: boolean | AddEventListenerOptionsOptional
options: boolean | AddEventListenerOptionsDispatches a synthetic event event to target and returns true if either event's cancelable attribute value is false or its preventDefault() method was not invoked, and false otherwise.
Optional
options: boolean | EventListenerOptionsOptional
options: boolean | EventListenerOptions
This Notifications API interface is used to configure and display desktop notifications to the user.
MDN Reference