TaskSignal: priority property
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 read-only priority
property of the TaskSignal
interface indicates the signal priority.
The initial value is set in the associated TaskController
by specifying it as an argument to the TaskController
constructor (by default it is "user-visible"
).
The priority of the signal can be changed by calling TaskController.setPriority()
on the associated controller.
For tasks with a mutable priority, this value is used to set the initial task priority and later to change it. Tasks with an immutable priority will ignore the value.
Value
A string indicating the signal priority.
This will be one of: "user-blocking"
, "user-visible"
, "background"
.
Examples
The priority
is most commonly used by developers to determine the new priority following prioritychange
events.
See TaskSignal: prioritychange event for a live example.
Specifications
Specification |
---|
Prioritized Task Scheduling # dom-tasksignal-priority |
Browser compatibility
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