WorkerGlobalScope.console

Non-standard
This feature is non-standard and is not on a standards track. Do not use it on production sites facing the Web: it will not work for every user. There may also be large incompatibilities between implementations and the behavior may change in the future.

The console read-only property of the WorkerGlobalScope interface returns a Console object providing access to the browser console for the worker.

Syntax

var consoleObj = self.console;

Value

A Console object.

Example

This property allows you to have access to a browser console for debugging purposes, inside a worker. So for example you could call

console.log('test');

inside a worker (which would basically be the equivalent of self.console.log('test');, as these are being called on the worker scope, which can be referenced with WorkerGlobalScope.self), to return a test message out to the browser console.

If you are calling console.log() from a DedicatedWorkerGlobalScope or other worker scope that acts on a single loaded window, that tab's web console will receive the logs. However, If you are calling console.log() from a SharedWorkerGlobalScope, the global browser console will receive the logs.

Note: Firefox has a bug with using console.log inside shared/service workers (see bug 1058644), which may return strange results, but this should be fixed soon.

Specifications

Not yet part of any specification.

Feature	Chrome	Firefox (Gecko)	Internet Explorer	Opera	Safari
`console`	4	29 (29) as `WorkerConsole` 30 (30) as the regular `Console`	(Yes)	(Yes)	(Yes)

Feature	Android	Chrome for Android	Firefox Mobile (Gecko)	Firefox OS (Gecko)	IE Mobile	Opera Mobile	Safari Mobile
`console`	?	(Yes)	29 (29) as `WorkerConsole` 30 (30) as the regular `Console`	1.4	?	?	?