Firefox Web Console Disabled?

Question

How come I get this message from Firefox Web Console

The Web Console logging API (console.log, console.info, console.warn, console.error) has been di

Answer 1

This happens when the page itself defines a global variable called console, for example. If the page is browser-sniffing to decide whether to define it, the behavior could differ in different browsers.

In the case of Firefox it also happens when Firebug is installed and its console is enabled, since that overrides the default window.console.