Baseline 2023
Newly available
The messageerror event is fired on a Window object when it receives a message that can't be deserialized.
This event is not cancellable and does not bubble.
SyntaxUse the event name in methods like addEventListener(), or set an event handler property.
addEventListener("messageerror", (event) => { })
onmessageerror = (event) => { }
This interface also inherits properties from its parent, Event.
MessageEvent.data Read only
The data sent by the message emitter.
MessageEvent.origin Read only
A string representing the origin of the message emitter.
MessageEvent.lastEventId Read only
A string representing a unique ID for the event.
MessageEvent.source Read only
A MessageEventSource (which can be a WindowProxy, MessagePort, or ServiceWorker object) representing the message emitter.
MessageEvent.ports Read only
An array of MessagePort objects representing the ports associated with the channel the message is being sent through (where appropriate, e.g., in channel messaging or when sending a message to a shared worker).
Listen for messageerror using addEventListener():
window.addEventListener("messageerror", (event) => {
console.error(event);
});
The same, but using the onmessageerror event handler property:
window.onmessageerror = (event) => {
console.error(event);
};
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