According to Softpedia , with the version running on the computer, there are not many major changes from Firefox 23 with the browser panel feature (Browser Console) and a new feature for web developers.
In Firefox 24 beta , this software is equipped with a tab closing feature in the right-click menu. This feature makes it easy for users to close a bunch of unnecessary tabs at the same time except for the current tab being accessed.
This is not the first time this idea has been applied to web browsers, Chrome can also do this if users install some add-ons.