TaskPriorityChangeEvent()

Experimental: This is an experimental technology
Check the Browser compatibility table carefully before using this in production.

The TaskPriorityChangeEvent() constructor creates a new TaskPriorityChangeEvent object.

This object is created with a value indicating the previous priority of the task: the priority before it changed and this event was fired.

Syntax

new TaskPriorityChangeEvent(type, options)

Parameters

type

A string with the case-sensitive name of the associated event. User agents set it to "prioritychange".

options

An object that, in addition of the properties defined in Event(), can have the following properties:

previousPriority

A string indicating the previous priority of the task. One of: "user-blocking", "user-visible", "background".

Specifications

Specification
Prioritized Task Scheduling
# dom-taskprioritychangeevent-taskprioritychangeevent

Browser compatibility

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