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  1. Mozilla and Web Components: Update

    • by • DOM, Standards, Web Components • 49 comments

    Editor’s note: Mozilla has a long history of participating in standards development. The post below shows a real-time slice of how standards are debated and adopted. The goal is to update developers who are most affected by implementation decisions we make in Firefox. We are Read more…

  2. ServiceWorkers and Firefox

    • by , and • DOM, Featured Article, Offline, ServiceWorkers, WebAPI • 4 comments

    Since early 2013, Mozillians have been involved with the design of the Service Worker. Thanks to work by Google, Samsung, Mozilla, and others, this exciting new feature of the web platform has evolved to the point that it is being implemented in various web browser Read more…

  3. Easy audio capture with the MediaRecorder API

    • by and • Audio, DOM, Featured Article, JavaScript, WebAPI • 9 comments

    The MediaRecorder API is a simple construct, used inside Navigator.getUserMedia(), which provides an easy way of recording media streams from the user’s input devices and instantly using them in web apps. This article provides a basic guide on how to use MediaRecorder, which is supported Read more…

  4. getUserMedia is ready to roll!

    • by • Audio, Canvas, Device APIs, DOM, Firefox, Firefox Nightly, HTML5, Labs, Video, Web Developers, WebRTC, WebSocket • 40 comments

    We blogged about some of our WebRTC efforts back in April. Today we have an exciting update for you on that front: getUserMedia has landed on mozilla-central! This means you will be able to use the API on the latest Nightly versions of Firefox, and Read more…

  5. DOM MutationObserver – reacting to DOM changes without killing browser performance.

    • by • Add-ons, DOM, Event, Firefox, Firefox Nightly • 19 comments

    DOM Mutation Events seemed like a great idea at the time – as web developers create a more dynamic web it seems natural that we would welcome the ability to listen for changes in the DOM and react to them. In practice however DOM Mutation Read more…

  6. Introducing Aurora 11 with tons of new features and improvements

    • by • Audio, DOM, Featured Article, Firefox, Firefox Aurora, HTML5, Performance • 47 comments

    We have now released Aurora 11, soon to become Firefox 11, and wanted to cover all the the things we have improved in this Read more…

  7. Announcing Firefox Aurora 10

    • by • Developer Tools, DOM, Feature, Featured Article, Firefox, Firefox Aurora, HTML5, IndexedDB, WebGL • 19 comments

    We’re happy to announce the availability of Aurora 10. (Download and Test Aurora 10) In additional to the normal improvements that you’ve come to expect like performance, security and bug fixes, Aurora 10 focuses in HTML5 enhancements. New additions HTML5 Visibility API createProcessingInstruction WebGL antialiasing Read more…

  8. Introducing Aurora 9

    • by • CSS, DOM, Feature, Featured Article, Firefox, Firefox Aurora, HTML5, XMLHttpRequest • 30 comments

    We have just released Aurora 9 (download and test Aurora 9), which is planned to be the upcoming Firefox 9. In it, we have a number of new things that we hope will get you Read more…

  9. Tagging docs for sprint at JSConf.eu October 1-2

    • by • Conferences, Docs, DOM, JavaScript, MDN, Sprints • Comments off

    We’re very excited to announce that Mozilla is sponsoring the Hacker Lounge at JSConf.eu and we will be holding a doc sprint at and during the conference. The focus of this doc sprint will naturally be docs for JavaScript and DOM. We hope to encourage Read more…

  10. Animating with javascript: from setInterval to requestAnimationFrame

    • by • Animations, DOM, JavaScript • 12 comments

    Animating DOM elements[1] or the content of a canvas is a classical use case for setInterval. But the interval is not as reliable as it seems, and a more suitable API is now available… Animating with setInterval To animate an element moving 400 pixels on Read more…