WorkerGlobalScope: error event - Web APIs | MDN (original) (raw)
Baseline
Widely available
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.
addEventListener("error", (event) => { })
onerror = (message, filename, lineno, colno, error) => { }
**Note:**For historical reasons, onerror
on Window and WorkerGlobalScope
objects is the only event handler property that receives more than one argument.
For more details about this, see the page for the error event on Window
objects.
Event type
Example
The following code snippet shows an onerror
handler set inside a worker:
self.onerror = () => {
console.log("There is an error inside your worker!");
};
The same snippet, but using addEventListener()
:
self.addEventListener("error", () => {
console.log("There is an error inside your worker!");
});
Specifications
Specification |
---|
HTML # handler-workerglobalscope-onerror |
Browser compatibility
See also
The WorkerGlobalScope interface it belongs to.