How do you log to Firebug from an extension?

Question

I'm writing an extension for Firefox, and I need to log some data to Firebug's console. Within the scope of my addon, "console" is undefined, and "window.content.console" is also undefined. So how do I log to the console?

Answer 1

As far as I know you can only do that if you are creating a JetPack Add-on. Normal debugging is done with Venkman from Mozilla at http://www.mozilla.org/projects/venkman/

Answer 2

Firebug console is associated with a particular page, so it wouldn't be very convenient even if you managed to log messages there. Did you try Chromebug? I didn't use it, but I would expect to find a similar console for extensions to use there.

You could also use the regular Error Console, although you won't get all the niceties Firebug's console provides. You could install Console^2 https://addons.mozilla.org/en-US/firefox/addon/1815 to make using the Error Console a little less painful.

Answer 3

Since you're not writing Javascript that executes within a window, console is not defined.

So you need to reference the Firebug extension first:

Firebug.console.log(str);