This script should work:
javascript:alert('b');
It works in Opera for me, but doesn’t work in Firefox..
Am I doing something wrong?
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javascript:alert('b');would be enough.Update: new versions of Firefox don’t give you access to
windowand thus – towindow.alert()from javascript:urls typed in address bar. Usethrow 'sometext', and see the result in console (yes, as an error). That’s the only output you can have now.