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  • How fast are web workers?

    The next version of Firefox OS, the mobile operating system, will unleash the power of devices by taking full advantage of their multi-core processors. Classically, JavaScript has been executed on a single thread, but web workers offer a way to execute code in parallel. Doing so frees the browser of ...

  • Streaming media on demand with Media Source Extensions

    Introducing MSE Media Source Extensions (MSE) is a new addition to the Web APIs available in all major browsers. This API allows for things like adaptive bitrate streaming of video directly in our browser, free of plugins. Where previously we may have used proprietary solutions like RTSP (Real Time Streaming ...

  • Trainspotting: Firefox 39

    Trainspotting is a series of articles highlighting features in the lastest version of Firefox. A new version of Firefox is shipped every six weeks – we at Mozilla call this pattern “release trains.” A new version of Firefox is here, and with it come some great improvements and additions to ...

  • Performance Testing Firefox OS With Raptor

    When we talk about performance for the Web, a number of familiar questions may come to mind: Why does this page take so long to load? How can I optimize my JavaScript to be faster? If I make some changes to this code, will that make this app slower? I’ve ...

  • ES6 In Depth: Collections

    ES6 In Depth is a series on new features being added to the JavaScript programming language in the 6th Edition of the ECMAScript standard, ES6 for short. Earlier this week, the ES6 specification, officially titled ECMA-262, 6th Edition, ECMAScript 2015 Language Specification, cleared the final hurdle and was approved as ...

MDN の改善に貢献する

MDN のすべての内容 (ドキュメント、デモ、サイト自体) は開発者のオープンコミュニティによって作成されています。あなたも参加してください!手助けする方法を選択してください: