We're looking for a user researcher to understand the needs of developers and designers. Is this you or someone you know? Check out the post: https://mzl.la/2IGzdXS

SharedWorkerGlobalScope.onconnect

The onconnect property of the SharedWorkerGlobalScope interface is an EventHandler representing the code to be called when the connect event is raised — that is, when a MessagePort connection is opened between the associated SharedWorker and the main thread.

Syntax

onconnect = function() { ... };

Example

This example shows a shared worker file — when a connection to the worker occurs from a main thread via a MessagePort, the onconnect event handler fires. The connecting port can be referenced through the event's ports parameter; this reference can have an onmessage handler attached to it to handle messages coming in through the port, and its postMessage() method can be used to send messages back to the main thread using the worker.

onconnect = function(e) {
    var port = e.ports[0];

    port.onmessage = function(e) {
      var workerResult = 'Result: ' + (e.data[0] * e.data[1]);
      port.postMessage(workerResult);
    }

    port.start();
}

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

Specifications

Specification Status Comment
HTML Living Standard
The definition of 'onconnect' in that specification.
Living Standard  

Browser compatibility

FeatureChromeEdgeFirefoxInternet ExplorerOperaSafari
Basic support No ?29 No10.6 No
FeatureAndroid webviewChrome for AndroidEdge mobileFirefox for AndroidOpera AndroidiOS SafariSamsung Internet
Basic support Yes3 ?29 Yes ? Yes

See also

Document Tags and Contributors

Contributors to this page: ExE-Boss, fscholz, chrisdavidmills, kscarfone
Last updated by: ExE-Boss,