The onmessageerror event handler of the DedicatedWorkerGlobalScope interface is an EventListener, called whenever an MessageEvent of type messageerror is fired on the worker—that is, when it receives a message that cannot be deserialized.

Note: This feature is available in Web Workers.


onmessageerror = function() { ... };


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

Browser compatibility

ChromeEdgeFirefoxInternet ExplorerOperaSafariAndroid webviewChrome for AndroidFirefox for AndroidOpera for AndroidSafari on iOSSamsung Internet
onmessageerrorChrome Full support 60Edge Full support ≤79Firefox Full support 57IE ? Opera Full support 47Safari ? WebView Android Full support 60Chrome Android Full support 60Firefox Android Full support 57Opera Android Full support 44Safari iOS ? Samsung Internet Android Full support 8.0


Full support
Full support
Compatibility unknown
Compatibility unknown

See also