Worker class

The interface of the Web Workers API represents a background task that can be created via script, which can send messages back to its creator. Creating a worker is done by calling the Worker("path/to/worker/script") constructor. Workers may themselves spawn new workers, as long as those workers are hosted at the same origin as the parent page. (Note: nested workers are not yet implemented in WebKit). Not all interfaces and functions are available to scripts inside a . Workers may use XMLHttpRequest for network communication, but its responseXML and channel attributes are always null. (fetch is also available, with no such restrictions.)

EventTarget

Worker

Implemented types

• EventTarget
• AbstractWorker

Available extensions

• PropsAbstractWorker
• PropsEventTarget
• PropsWorker

Annotations

• @JS()
• @staticInterop

Constructors

Worker(String scriptURL, [WorkerOptions? options])

factory

Properties

hashCode → int

The hash code for this object.

no setter, inherited

onerror ↔ EventHandlerNonNull<Event>?

Available on AbstractWorker, provided by the PropsAbstractWorker extension

getter/setter pair

onmessage ↔ EventHandlerNonNull<Event>?

Available on Worker, provided by the PropsWorker extension

getter/setter pair

onmessageerror ↔ EventHandlerNonNull<Event>?

Available on Worker, provided by the PropsWorker extension

getter/setter pair

runtimeType → Type

A representation of the runtime type of the object.

no setter, inherited

Methods

addEventListener(String type, EventListener? callback, [dynamic options]) → void

Available on EventTarget, provided by the PropsEventTarget extension

dispatchEvent(Event event) → bool

Available on EventTarget, provided by the PropsEventTarget extension

noSuchMethod(Invocation invocation) → dynamic

Invoked when a nonexistent method or property is accessed.

inherited

postMessage(dynamic message, Iterable transfer) → void

Available on Worker, provided by the PropsWorker extension

removeEventListener(String type, EventListener? callback, [dynamic options]) → void

Available on EventTarget, provided by the PropsEventTarget extension

terminate() → void

Available on Worker, provided by the PropsWorker extension

toString() → String

A string representation of this object.

inherited

Operators

operator ==(Object other) → bool

The equality operator.

inherited