WorkerGlobalScope: error event
Baseline
Widely available
This feature is well established and works across many devices and browser versions. It’s been available across browsers since July 2015.
Note: This feature is only available in Web Workers.
The error event of the WorkerGlobalScope interface fires when an error occurs in the worker.
Syntax
Use the event name in methods like addEventListener(), or set an event handler property.
js
addEventListener("error", (event) => { })
onerror = (message, filename, lineno, colno, error) => { }
Event type
A generic Event.
Example
The following code snippet shows an onerror handler set inside a worker:
js
self.onerror = () => {
console.log("There is an error inside your worker!");
};
The same snippet, but using addEventListener():
js
self.addEventListener("error", () => {
console.log("There is an error inside your worker!");
});
Specifications
| Specification |
|---|
| HTML # handler-workerglobalscope-onerror |
Browser compatibility
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See also
The WorkerGlobalScope interface it belongs to.