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WorkerGlobalScope.dump()

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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 dump() method of the WorkerGlobalScope interface allows you to write a message to stdout — i.e. in your terminal, in Firefox only. This is the same as Firefox's window.dump, but for workers.

Syntax

dump('My message\n');

Parameters

A DOMString containing the message you want to send.

Returns

Void.

Example

To write an output from your worker to your computer's terminal, you first have to run an instance of Firefox started from your command line/terminal. For example, on Mac OS X you'd run it using something like this (assuming you are inside the Applications folder):

./Firefox.app/Contents/MacOS/firefox-bin -profile /tmp -no-remote

Now go into about:config and enable the browser.dom.window.dump.enabled pref.

Next, run a worker containing the following line:

dump('test\n');

This should result in a "test" message being output to the terminal.

Specifications

This method does not appear in any specification.

Browser compatibility

Feature Chrome Firefox (Gecko) Internet Explorer Opera Safari
Basic support Not supported 3.5 (1.9.1) Not supported Not supported Not supported
Feature Android Chrome for Android Firefox Mobile (Gecko) Firefox OS (Gecko) IE Mobile Opera Mobile Safari Mobile
Basic support Not supported Not supported 1.0 (1.9.1) 1.0.1 Not supported Not supported Not supported

See also

WorkerGlobalScope

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