Follow these instructions to activate and enable JavaScript in Firefox. PC & MAC. Open a new Firefox browser window or tab. Copy the following then paste it into the Firefox address bar: about:config; Hit the Enter key. On the following page, click th

Because of this, disabling JavaScript in Mozilla 24.0 is typically only recommended for advanced users, though it’s easy to turn back on. There are two main ways to enable JavaScript in Firefox: using add-ons, which gives users controls not designed by

How to Turn On Javascript in Mozilla Firefox. Many of your favorite websites rely on special functionality to animate menus and play sounds. JavaScript, a programming language used to enhance Web content, makes that media-powered content...