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  1. What’s new in Cordova 3.5.0 for Firefox OS

    The Cordova community recently released version 3.5.0 of the tools. This version includes some exciting improvements to the Firefox OS development workflow. Before we dive into the new features, make sure you have the latest version by running: $ sudo npm install -g cordova $ Read more…

  2. Stack Overflow Dashboard – check engagement, metrics and more

    Recently I put together a little Mozilla tags on Stack Overflow dashboard to check the engagement and numbers for the tags we sponsor. I liked the idea and wanted to create a general purpose dashboard for Stack Overflow, and share the feature, code and thinking Read more…

  3. Easy audio capture with the MediaRecorder API

    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. PlayCanvas Goes Open Source

    This is a guest post by Will Eastcott of the PlayCanvas engine. As outlined in What Mozilla Hacks is, we constantly cover interesting information about open source and the Open Web, both from external as well as Mozilla authors, so feel free to share with Read more…

  5. App Framework and Firefox OS

    Intel’s App Framework is an open source, MIT licensed, cross platform HTML5 framework for building mobile applications. It is hosted on GitHub where you can contribute to the project, especially the Firefox OS theme. App Framework is comprised of three main areas. Query selector library Read more…

  6. Treat Open Source Like a Startup

    What am I getting myself into? I was never an open source contributor. I had never even filed a GitHub issue. I considered myself an entrepreneur who simply happened to be technical. But when the startup I wanted to build needed something that didn’t exist, Read more…

  7. Creating a Multiplayer Game with TogetherJS and CreateJS

    Bubble Hell Duel is a multiplayer HTML5 dogfighting game. The object of the game is to dodge bubbles launched from your opponent while returning fire. This game was written mainly as a prototype for learning and the source code is available on GitHub. You can Read more…

  8. How fast is PDF.js?

    Hi, my name is Thorben and I work at Opera Software in Oslo, not at Mozilla. So, how did I end up writing for Mozilla Hacks? Maybe you know that there is no default PDF viewer in the Opera Browser, something we would like to Read more…

  9. asm.js performance improvements in the latest version of Firefox make games fly!

    The latest version of Firefox which launched last week includes a major update to the user interface as well as to features like Sync. Another area in which this release brings significant improvements is in asm.js performance, which as we will see below is very Read more…

  10. Coordinate Conversion Made Easy – the power of GeometryUtils

    In a previous post we introduced the GeometryUtils interface and the getBoxQuads() API for retrieving the CSS box geometry of a DOM node. GeometryUtils also takes care of another important problem: converting coordinates reliably from one DOM node to another. For example, you might want Read more…