SharedWorker: port property
Baseline
2026
Newly available
Since May 2026, this feature works across the latest devices and browser versions. This feature might not work in older devices or browsers.
The port property of the SharedWorker
interface returns a MessagePort object used to communicate and control
the shared worker.
Value
A MessagePort object.
Examples
The following code snippet shows creation of a SharedWorker object using
the SharedWorker() constructor. Multiple
scripts can then access the worker through a MessagePort object accessed
using the SharedWorker.port property — the port is started using its
start() method:
js
const myWorker = new SharedWorker("worker.js");
myWorker.port.start();
For a full example, see our Basic shared worker example (run shared worker.)
Specifications
| Specification |
|---|
| HTML # dom-sharedworker-port-dev |