alert() and console.log() not working in Firefox 26

Question

I feel like I'm going crazy but alert() and console.log() refuses to work anywhere on Firefox 26.

At first I thought it was my own website's problem, but I cannot for the life of me to get it to work via javascript: urls, Firebug, I even tried it in jsfiddle.net by just putting alert('test'); in the script panel.

Tried uninstalling and installing again, no luck.

The only extension I'm running is Firebug.

Heck, Stackoverflow didn't even prompt me about leaving when I accidentally clicked the back button while writing this.

Also yes, I made sure there was some content inside the alert() and console.log()

What I mean by not working is that Firefox treats the code as if it were non-existent, nothing happens.

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Once again, here's my environment:
Browser: Firefox 26.0
OS: Windows 8.1 Pro
Issue: alert(), console.log(), and apparently prompt() doesn't work

If anyone might know why this is happening, I would highly appreciate an answer.

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UPDATE

Following Pointy's comment, it appears that both alert() and console.log() work as expected on the New Tab Page, but nowhere else

Answer 1

You might want to try re-installing Firebug:

• console.log in firefox is not working?

PS: I happen to be running a similar configuration (including FF 26) ... and things work fine for me. IMHO...

PPS: You might also try setting "about:config, prompts.tab_modal.enabled = false":

• https://bugzilla.mozilla.org/show_bug.cgi?id=613752

The default is "true", my FF 26 is set "true" and things are working for me ... but who knows. If reinstalling Firebug doesn't help, maybe it's worth a shot?

Answer 2

Silly but, in firebug can you check if window.alert and window.console are defined.... and if yes then, can you check if window.alert('hi') works ?