The AbstractWorker
.onerror
property of the AbstractWorker
interface represents an EventHandler
, that is a function to be called when the error
event occurs and bubbles through the Worker
.
Syntax
myWorker.onerror = function() { ... };
Example
The following code snippet shows creation of a Worker
object using the Worker()
constructor and setting up of an onerror
handler on the resulting object:
var myWorker = new Worker('worker.js'); myWorker.onerror = function() { console.log('There is an error with your worker!'); }
Specifications
Specification | Status | Comment |
---|---|---|
HTML Living Standard The definition of 'AbstractWorker.onerror' in that specification. |
Living Standard |
Browser compatibility
The compatibility table on this page is generated from structured data. If you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request.
Desktop | Mobile | |||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|
onerror | Chrome Full support 4 | Edge Full support 12 | Firefox Full support 3.5 | IE Full support 10 | Opera Full support 10.6 | Safari Full support 4 | WebView Android Full support 4.4 | Chrome Android Full support 18 | Firefox Android Full support 4 | Opera Android Full support 11 | Safari iOS Full support 5.1 | Samsung Internet Android Full support 1.0 |
Legend
- Full support
- Full support
Cross-origin worker error behaviour
In earlier browser versions, trying to load a cross-origin worker script threw a SecurityError
; in newer browsers an error
event is thrown instead due to a spec change. Find out more information on how to deal with this in Loading cross-origin worker now fires error event instead of throwing; worker in sandboxed iframe no longer allowed.
See also
- The
AbstractWorker
interface it belongs to.