Worker: error event

{{APIRef("Web Workers API")}} {{AvailableInWorkers("window_and_worker_except_service")}} 

The error event of the {{domxref("Worker")}}  interface fires when an error occurs in the worker.

Syntax

Use the event name in methods like {{domxref("EventTarget.addEventListener", "addEventListener()")}} , or set an event handler property.

addEventListener("error", (event) => {});

onerror = (event) => {};

Event type

A generic {{domxref("Event")}} .

Example

The following code snippet creates a {{domxref("Worker")}}  object using the {{domxref("Worker.Worker", "Worker()")}}  constructor and sets up an onerror handler on the resulting object:

const myWorker = new Worker("worker.js");

myWorker.onerror = (event) => {
  console.log("There is an error with your worker!");
};

Specifications

{{Specifications}} 

Browser compatibility

{{Compat}}