Question

Edit: I was able to go one step further 🙂

PSEUDO CODE (what I want)

if (CurrentTabURL == empty Tab) and (Tab.Count == 1)
{close Firefox}
else
{close Tab}

MY CODE (only the if statements don’t work. Both actions are working)

if  (gBrowser.currentURI == "") 
    and (tabbrowser.browsers.length == 1)
then  
    goQuitApplication();
else
    gBrowser.removeTab(gBrowser.mCurrentTab);
end

This link helped me a lot.

Answer 1

gBrowser.currentURI is an nsIURI instance. If you want to compare the URL to a string you should look at gBrowser.currentURI.spec. The URL of an “empty tab” is about:blank by the way. Also, I guess that you want to use JavaScript? Corrected code:

if (gBrowser.currentURI.spec == "about:blank" && gBrowser.browsers.length == 1)
  goQuitApplication();
else
  gBrowser.removeTab(gBrowser.selectedTab);