Window: messageerror event
Baseline
Widely available
This feature is well established and works across many devices and browser versions. It’s been available across browsers since March 2023.
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.
Syntax
Use the event name in addEventListener():
js
addEventListener("messageerror", (event) => { })
Alternatively, assign to the event handler property of the interface:
js
onmessageerror = (event) => { }
Event type
A MessageEvent. Inherits from Event.
Examples
Listen for messageerror using addEventListener():
js
window.addEventListener("messageerror", (event) => {
console.error(event);
});
The same, but using the onmessageerror event handler property (but note that this replaces other event listeners added using onmessageerror, if any):
js
window.onmessageerror = (event) => {
console.error(event);
};
Specifications
| Specification |
|---|
| HTML> # event-messageerror> |
| HTML> # handler-window-onmessageerror> |
Browser compatibility
See also
Window.postMessage()- Related events:
message.