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Firefox 17 shipped on November 20, 2012. This article lists key changes that are useful for not only web developers, but also Firefox and Gecko developers as well as add-on developers.

Changes for Web developers

HTML

CSS

DOM/APIs

JavaScript

WebGL

  • The EXT_texture_filter_anisotropic WebGL extension has been unprefixed. Using "MOZ_EXT_texture_filter_anisotropic" will present a warning from now on. The prefixed name is going to be removed in a future release (bug 776001).

SVG

No change.

MathML

  • The parsing of the align attribute on <mtable> elements has been updated to treat optional spaces more correctly.

XUL

  • XUL key element supports "os" modifier which is Win key (Super or Hyper key) (bug 778732).

Network

  • Removed the the non-standard feature XMLHttpRequest.onuploadprogress which was deprecaed in Firefox 14.

No change.

Developer tools

  • Change JSTerm's $ helper function from getElementById to querySelector() (bug 751749).

User Agent

The Gecko part of the user agent string changed. The build date (which hadn't been updated since 2010) was removed, and the Gecko version number was put in its place instead. So Gecko/20100101 -> Gecko/17.0. This may affect you if you are doing user agent sniffing.

Changes for add-on and Mozilla developers

Interface changes

nsIInputStream
The available() method returns 64-bit length instead of 32-bit (bug 215450).
nsIDOMWindowUtils
The sendMouseScrollEvent() method has been replaced with sendWheelEvent() (bug 719320).
nsIFilePicker
The open() method, to open the file dialog asynchronously, has been added and the show() method has been deprecated (bug 731307).
nsIScriptSecurityManager
The checkLoadURIStr() and checkLoadURI() methods have been removed (bug 327244).
nsIRefreshURI
The setupRefreshURIFromHeader() method has a added principal parameter (bug 327244).

New interfaces

None.

Removed interfaces

None removed.

See also

Older versions

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 Última atualização por: fscholz,