1. Firefox 4 Beta 9 – a huge pile of awesome

    • by Christopher Blizzard • Featured Article, Firefox 4 • 108 comments

    Hello, and welcome to the post for Firefox 4 beta 9. If you’re reading this then you’re interested in what we’ve got coming down the pipe for the latest beta for the wonderful browser known as Firefox 4. We’re starting to reach the end of Read more…

  2. How to develop a HTML5 Image Uploader

    • by Paul Rouget • Canvas, Drag and Drop, FileAPI, Firefox 4, HTML5, XMLHttpRequest • 35 comments

    HTML5 comes with a set of really awesome APIs. If you combine these APIs with the <canvas> element, you could create a super/modern/awesome Image Uploader. This article shows you how. All these tips work well in Firefox 4. I also describe some alternative ways to Read more…

  3. ECMAScript 5 strict mode in Firefox 4

    • by Chris Heilmann • Firefox 4, JägerMonkey, JavaScript, Security, TraceMonkey • 26 comments

    Editor’s note: This article is posted by Chris Heilmann but authored by Jeff Walden – credit where credit is due. Developers in the Mozilla community have made major improvements to the JavaScript engine in Firefox 4. We have devoted much effort to improving performance, but Read more…

  4. People of HTML5 – Bruce Lawson

    • by Chris Heilmann • Featured Article, HTML5, People of HTML5, Web Developers • 21 comments

    Leggi la traduzione in italiano HTML5 needs spokespeople to work. There are a lot of people out there who took on this role, and here at Mozilla we thought it is a good idea to introduce some of them to you with a series of Read more…

  5. Write some docs, get an MDN t-shirt

    • by Janet Swisher • Docs, MDN, Sprints • 13 comments

    As I mentioned in my post about ways you can help improve MDN in 2011, we are holding a virtual sprint to write documentation on MDN next week, January 28 to 29. “Virtual” means that there will not be an in-person meeting, but rather people Read more…

  6. IndexedDB in Firefox 4

    • by Janet Swisher • Firefox 4, IndexedDB • 11 comments

    This is a guest post from Ben Turner, one of the developers of IndexedDB for Firefox. Mozilla is pleased to announce support for IndexedDB in the upcoming Firefox 4 Beta 9 and recent trunk nightlies. IndexedDB allows web apps to store large amounts of data Read more…

  7. HTML5 Guitar Tab Player with the Firefox 4 Audio Data API

    • by Paul Rouget • Audio, Canvas, Demo, Firefox 4, HTML5 • 9 comments

  8. MDN doc sprint was a huge success

    • by Janet Swisher • Docs, MDN, Sprints • 8 comments

    More than 30 contributors from at least a dozen countries, touching approximately 300 documentation pages. Those are the results from the documentation sprint that started Friday, January 28 at 14:00 UTC. While the sprint was scheduled to end at midnight UTC on Saturday, some participants Read more…

  9. Zooming and rotating for video in HTML5 and CSS3

    • by Chris Heilmann • CSS, HTML5, JavaScript, Video • 6 comments

    The source of the code examples in this post is available on GitHub and you can see the demo in action. There are dozens of video players that allow you to do all the normal things with videos: play, pause, jump to a certain time Read more…

  10. Simple HTML5 video encoding with vid.ly – interview, first impressions and invite code

    • by Chris Heilmann • Video • 5 comments

    Today encoding.com released a new service called vid.ly which is not yet another URL shortener, but actually a very impressive service for converting video. One of the biggest annoyance of using HTML5 video is to convert your movie to various formats supported by different browsers. Read more…