How can I find out what is in localStorage, for example in Google Chrome: Resources → Local storage
(I mean FF dev tools, not Firebug)
Firefox has since added this feature . To enable it, go to "Preferences" (by clicking the "Cog" icon in "Developer Tools") and check "Storage" in the default list of Firefox developer tools.
At some point, we plan to add a storage panel that can be used to check all types of local storage. Until then, you could use this .