1. privacy-related changes coming to CSS :visited

    • by Christopher Blizzard • CSS, Firefox, Security • 169 comments

    For more information about this, have a look at David Baron’s post, the bug and the post on the security blog. For many years the CSS :visited selector has been a vector for querying a user’s history. It’s not particularly dangerous by itself, but when Read more…

  2. quarterly developer survey update

    • by Alix Franquet • MDN, Survey • 2 comments

    We are inviting developers to give us feedback through quarterly surveys so we can better understand your needs. Your feedback is crucial to help us build the best platform, tools, and content. Last November, we asked web developers to take a 20 question survey to Read more…

  3. a quick note on JavaScript engine components

    • by Christopher Blizzard • Feature, Firefox, JägerMonkey, JavaScript • 33 comments

    There have been a bunch of posts about the JägerMonkey (JM) post that we made the other day, some of which get things subtly wrong about the pieces of technology that are being used as part of Mozilla’s JM work. So here’s the super-quick overview Read more…

  4. Mozilla developer preview (Gecko 1.9.3a2) now available

    • by Christopher Blizzard • Feature, Firefox, HTML5, Performance • 14 comments

    We’ve posted a new release of our Mozilla developer preview series as a way to test new features that we’re putting into the Mozilla platform. These features may or may not make it into a future Firefox release, either for desktops or for mobile phones. Read more…

  5. improving JavaScript performance with JägerMonkey

    • by Christopher Blizzard • Firefox, JägerMonkey, JavaScript, TraceMonkey • 24 comments

    In August 2008, Mozilla introduced TraceMonkey. The new engine, which we shipped in Firefox 3.5, heralded a new era of performance to build the next generation of web browsers and web applications. Just after the introduction of our new engine Google introduced V8 with Chrome. Read more…