web api event

DedicatedWorkerGlobalScope: messageerror event

Available in workers

The messageerror event is fired on a DedicatedWorkerGlobalScope 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 methods like addEventListener(), or set an event handler property.

addEventListener("messageerror", (event) => { })

onmessageerror = (event) => { }

Listen for messageerror using addEventListener():

// worker.js

self.addEventListener("messageerror", (event) => {
  self.postMessage("Error receiving message");
  console.error(event);
});

The same, but using the onmessageerror event handler property:

// worker.js

self.onmessageerror = (event) => {
  self.postMessage("Error receiving message");
  console.error(event);
};

SpecificationsStandards references are available on the canonical MDN page.

Browser compatibilityCompatibility data is available on the canonical MDN page.