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  • Adding captions and subtitles to HTML5 video

    This article is also available on MDN. With the introduction of the <video> and <audio> elements to HTML5, we finally have a native way to add video and audio to our websites. We also have a JavaScript API that allows us to interact with this media content in different ways, ...

  • Mozilla at conferences – June edition

    Welcome to a quick round-up of what Mozillians have been talking about at events in and around June. Frédéric Harper spoke at Devoxx UK about “Getting the best out of your design with responsive web design“ Robert Nyman spoke at JSCamp Romania about “Five stages of development (slides – video)” ...

  • ServiceWorkers and Firefox

    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 engines. What are Service Workers? ...

  • WebIDE Lands in Nightly

    If you’ve been following our Developer Tools series on the Mozilla Hacks blog, you’ve seen the developer tools evolve from pure inspection to a debugging environment both for web sites and apps on desktop and mobile. Today we want to introduce you to the next step of evolution: adding in-browser ...

  • 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 $ sudo npm install -g plugman ...

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