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    Firefox OS 1.0.1 for developers

    Firefox OS 1.0.1 was first offered to partners for release on July 2, 2013, and was the first official release of Firefox OS. Its Gecko component is based on Firefox 18 (see Firefox 18 for developers), released on January 18, 2013. For older updates, have a read of the older Firefox desktop release notes, starting with Firefox 17 for developers. This page details the developer features newly implemented in Firefox OS 1.0.1.

    HTML

    Firefox OS-specific:

    • <input type="file"> disabled due to memory usage implications (bug 832923).

    General Gecko:

    CSS

    General Gecko:

    • The min-width and min-height now uses the auto keyword as initial value (This has an effect only on flex items as it resolves to 0, the previous initial value, for other items). (bug 763689)
    • The cascade has been updated: now author !important rules override CSS animations. (bug 783714)
    • The background shorthand property now recognizes CSS3 background-size property specified inside. (bug 570326)
    • Initial support for the CSS Flexbox Module has been landed. It is disabled by default but can be enabled by setting layout.css.flexbox.enabled to true. (bug 666041)

    JavaScript

    Firefox OS-specific:

    • When detecting <video> support for different formats, HTMLMediaElement.prototype.canPlayType incorrectly reports true for h.264 video, whereas in actual fact h.264 is not supported.

    General Gecko:

    • Harmony's (ECMAScript 6) Direct Proxies have been landed (bug 703537). Warning: the implementation contains a couple of known bugs, missing features and misalignements with the current state of the spec. Do not rely on it for production code.
    • The ECMAScript 6 contains() method is now implemented on strings. This is unfortunately not compatible with Mootools 1.2, which expects different behavior from contains() on strings but does not ensure it. Newer versions of Mootools fix this issue; sites should upgrade their Mootools version to something newer than 1.2.

    DOM/API

    Firefox OS specific:

    General Gecko:

    Network

    General Gecko:

    • Quality factors ("q-values") are now clamped to 2 digits in HTTP Accept-Language header (bug 672448).
    • The ALLOW-FROM syntax of the X-FRAME-OPTIONS HTTP Response header is now supported (bug 690168).

    Feature highlights for 1.0.1

    • SMS
    • 3G/Data
    • WiFi
    • Open Web Apps
    • Voicemail
    • MozApp support
    • Persona / ID
    • Carrier billing
    • Bluetooth
    • Network Manager
    • USB device storage
    • Multi-process support
    • Async pan/zoom
    • SIM Toolkit
    • Multi-APN support
    • Full Screen
    • WiFi Hotspot
    • Software Updates
    • Cell Broadcast
    • Notification Settings
    • UI Transition/Animations
    • Localization support
    • First Run Experience
    • Call Waiting
    • Call Forwarding

    See also

    Document Tags and Contributors

    Contributors to this page: trevorh, chrisdavidmills
    Last updated by: chrisdavidmills,
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