The port property of the SharedWorker interface returns a MessagePort object used to communicate and control the shared worker.




A MessagePort object.


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:

var myWorker = new SharedWorker('worker.js');

For a full example, see our Basic shared worker example (run shared worker.)


Specification Status Comment
WHATWG HTML Living Standard
The definition of 'AbstractWorker.onerror' in that specification.
Living Standard  

Browser compatibility

Feature Chrome Firefox (Gecko) Internet Explorer Opera Safari
Support 4 29.0 (29.0) No support 10.60 5
No support 6.1
Feature Android Chrome for Android Firefox Mobile (Gecko) Firefox OS (Gecko) IE Mobile Opera Mobile Safari Mobile
Support No support No support 33.0 (33.0) 2.1 No support 11.5 5.1
No support 7.1

See also

Document Tags and Contributors

 Contributors to this page: fscholz, nmve, Sebastianz, julienw, chrisdavidmills, kscarfone
 Last updated by: fscholz,