Firefox's new Scratchpad is different from Firefox's other JavaScript dev tools in that it is just, as the Mozilla Blog puts it, "a text editor that knows how to run JavaScript." Scratchpad gets ...

Mozilla's open-source browser will receive new developer-friendly capabilities on the desktop and user-facing features on Android.

Mozilla developer Paul Rouget's "JSTerm" add-on makes Firefox's new built-in developer tools even more powerful for JavaScript coders.

Mozilla is leveraging an impressive new optimization technique to bring a big performance boost to the Firefox JavaScript engine. The code was merged today (but is not yet ready to be enabled by ...

Firefox's graphics and JavaScript performance should improve with new Mozilla projects. Don't expect results by Firefox 5's June release, though.