SharedWorker: error event
Baseline 2026>
Newly available
Since May 2026, this feature works across the latest devices and browser versions. This feature might not work in older devices or browsers.
The error event of the SharedWorker interface fires when an error occurs in the worker.
Syntax
Use the event name in addEventListener():
js
addEventListener("error", (event) => { })
Alternatively, assign to the event handler property of the interface:
js
onerror = (event) => { }
Event type
A generic Event.
Example
The following code snippet creates a SharedWorker object using the SharedWorker() constructor and sets up an onerror handler on the resulting object:
js
const mySharedWorker = new SharedWorker("shared-worker.js");
mySharedWorker.onerror = (event) => {
console.error("There is an error with your worker!");
};
Specifications
| Specification |
|---|
| HTML> # handler-abstractworker-onerror> |