Why does Firefox sometimes generate "console not defined" error?

Question

Sometimes Firefox generates console not defined error when console.debug() is used. Is this some kind of timing issue with load?

Answer 1

When Firebug is not present, the console object will be undefined.

Here are some workaround suggestions.

I have no idea what led to this design decision.

Answer 2

I cannot tell you why, but window.console.debug() should always work(assuming there is a console-object in global scope). I've also noticed this behaviour the last time, since that I allways use window.console instead of console.