TheTaskController() constructor creates a newTaskController object, optionally setting the initialpriority of its associatedsignal.

If no priority is set, the signal priority defaults touser-visible

Syntax

new TaskController()new TaskController(options)

Parameters

optionsOptional

An object with the following properties:

priorityOptional

Thepriority of the signal associated with thisTaskController.One of:"user-blocking","user-visible" (default),"background".

Examples

This code shows how to construct a task controller that has a signal with default priority (user-visible).

const controller = new TaskController();

To construct a task controller that has a specific signal priority, pass thepriority as a property of the optional argument.

controller2 = new TaskController({ priority: "user-blocking" });

Specifications

Browser compatibility