Simon Willison’s Weblog

ReferenceError: console is not defined. Since Firebug 1.2 you need to call window.loadFirebugConsole() in order for console.log and friends to work.

Posted 23rd December 2008 at 10:22 pm

Recent articles

My review of Claude's new Code Interpreter, released under a very confusing name - 9th September 2025
Recreating the Apollo AI adoption rate chart with GPT-5, Python and Pyodide - 9th September 2025
GPT-5 Thinking in ChatGPT (aka Research Goblin) is shockingly good at search - 6th September 2025

debugging 35 firebug 22 firefox 90 javascript 721

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