Firefox 21 for developers

HTML

• 实现了<style>元素上的scoped属性。拥有该属性的<style>元素可以通过在 Firefox 20 中实现的 CSS 伪类:scope选择器选择到.(Firefox bug 508725).
• 实现了新的<main>元素 (Firefox bug 820508).

JavaScript

• E4X,一个古老的 JavaScript 扩展 (ECMA-357),已经被删除。因为一直以来，只有 Gecko 支持它.(Firefox bug 788293).
• parseInt不再将以"0"开头的字符串作为 8 进制数字来解析 (Firefox bug 786135).

CSS

• -moz-user-select属性的属性值在设置为 none 时和设置为 -moz-none 时效果等同于，这样才能让 Gecko 和其他内核 WebKit(Chrome, Safari),Presto (Opera) 以及 Trident(Internet Explorer) 中的表现相同 (Firefox bug 816298).
• On XHTML content, the auto value of -moz-hyphens incorrectly applied hyphenation rules when the language was not explicitly declared. This is fixed by (Firefox bug 702121).
• CSS 属性-moz-orient现在支持新的值 auto. 当应用到一个<meter>元素或者<progress>元素上时，auto 就等同于 horizontal(Firefox bug 835883).

DOM

• 实现了window.location上的 origin 属性 (Firefox bug 828261).
• 实现了 <input type="time"> 对象上的 valueAsDate 和 valueAsNumber 方法 (Firefox bug 781570).
• 实现了 <input type="time"> 对象上的 min 和 max 属性 (Firefox bug 781572).
• Some new keyCodes for volume control are supported (Firefox bug 674739).
• Some new keyCodes for ancient keyboard layout such as AS/400 are now supported on Windows and Linux (Firefox bug 833719).
• Various keyCode values for OEM sepecific keys on Windows are now supported again (Firefox bug 833719).
• 实现了window.crypto.getRandomValues函数 (Firefox bug 440046)。

SVG

• 实现了paint-order属性 (Firefox bug 828805).

网络

• 更新 CSP 实现到最新的 CSP 规范 1.0(CR):
  • Support for the spec-compliant Content-Security-Policy HTTP header (in addition to the experimental X-Content-Security-Policy) has been added (Firefox bug 783049). Note: the patch for this new header landed in Firefox 21, it is disabled on builds (Firefox bug 842657).

附加组件和 Mozilla 开发者需要注意的变化

• FUEL applications cannot use the Livemarks service anymore (Firefox bug 834492). The Livemarks service is deprecated and phased out in favor of the new async interface.
• History API saw numerous deprecated API being removed:

  • Replaced by mozIAsyncFavicons:

    • nsIFaviconService::setFaviconUrlForPage
    • nsIFaviconService::setFaviconData
    • nsIFaviconService::getFaviconData
    • nsIFaviconService::getFaviconForPage
    • nsIFaviconService::setAndLoadFaviconForPage
    • nsIFaviconService::getFaviconImageForPage
    • nsIFaviconService::getFaviconDataAsDataURL

  • Replaced by mozIAsyncLivemarks:

    • nsILivemarkService::*
    • PlacesUtils.itemIsLivemark
    • PlacesUtils.nodeIsLivemarkContainer
    • PlacesUtils.nodeIsLivemarkItem

  • Removed only third argument:

    • PlacesUIUtils.showBookmarkDialog

  • No more implemented by Places, use mozIAsyncHistory instead:

    • nsIGlobalHistory2::addURI
    • nsIGlobalHistory2::isVisited
    • nsIGlobalHistory2::setPageTitle

  • No more needed, use onDeleteURI or onItemRemoved:

    • nsINavHistoryObserver::OnBeforeDeleteURI
    • nsINavBookmarkObserver::OnBeforeItemRemoved

  • Never implemented properly:

    • nsINavHistoryFullVisitResultNode

  • Deprecated, use mozIAsyncHistory::updatePlaces instead:

    • nsINavHistoryService::AddVisit

参见

• Firefox 21 发行说明
• Firefox 21 网站兼容性
• Firefox 21 附加组件兼容性

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