web-feature: messageerror

baseline logo Widely available in browsers but not in WebViews

The messageerror event fires on a target, such as a window or worker, when an incoming message cannot be deserialized. This event can fire for many types of messages, such as cross-document messages or broadcast channel messages.

Notes

Unsupported keys in WebViews

  • WKWebView:
    api.ServiceWorkerContainer.messageerror_event

Support data provided by: BCD logo

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This feature was last updated on November 22, 2025.