TaskPriorityChangeEvent: TaskPriorityChangeEvent() constructor
Limited availability
This feature is not Baseline because it does not work in some of the most widely-used browsers.
Note: This feature is available in Web Workers.
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
js
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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