TheTaskPriorityChangeEvent is the interface for theprioritychange event.

Constructor

TaskPriorityChangeEvent()

Creates a newTaskPriorityChangeEvent object, setting an event name and previous priority.

Instance properties

This interface also inherits the properties of its parent,Event.

TaskPriorityChangeEvent.previousPriorityRead only

Returns thepriority of the correspondingTaskSignalbefore thisprioritychange event.

Instance methods

This interface has no methods of its own, but inherits the methods of its parent,Event.

Examples

An object of this type is returned in the handler for aprioritychange event.The code below shows a handler in which thenewPriority andpreviousPriority are logged.

// Listen for 'prioritychange' events on the controller's signal.controller.signal.addEventListener("prioritychange", (event) => {  const previousPriority = event.previousPriority;  const newPriority = event.target.priority;  console.log(`Priority changed from ${previousPriority} to ${newPriority}.`);});

A more complete live example can be found inprioritychange event > Examples.

Specifications

Browser compatibility

See also

• prioritychange event