Firefox 34 für Entwickler

Möchtest du helfen Firefox 34 zu dokumentieren? Schaue dir die Liste der Bugs an, über die noch geschrieben werden muss.

Änderungen für Webentwickler

Entwickler Werkzeuge

Höhepunkte:

All devtools bugs fixed between Firefox 33 and Firefox 34.

CSS

Unsere experimentelle Implementierung der CSS Schriftarten Level 3 schreitet voran. Neu implementierte Funktionen sind:
- Der Fallback Algorithmus von font-variant-position (en-US), erstellt synthetische Alternativen für fehlende Glyphen, basierend auf den subscript and superscript metrics supplied by the font (Bug 1024804).
- Das layout.css.font-features.enabled wurde entfernt, was beudeutet, dass die folgenden Eigenschaften standartmäßig aktiviert sind :
  - The CSS Font Level 3 version of font-variant which is now a shorthand property.
  - The longhand properties font-variant-caps (en-US), font-variant-numeric (en-US), font-variant-position (en-US), font-variant-east-asian (en-US), font-variant-ligatures (en-US), and font-variant-alternates (en-US).
  - The properties font-kerning (en-US) and font-synthesis (en-US)
  - The properties font-feature-settings and font-language-override (en-US) are unprefixed. The prefixed version are still available for some time to ease transition.
To reflect the latest specification changes, the value auto has been renamed in main-size on the flex-basis (en-US) property. The shorthand flex (en-US) keep an auto value, but it is a synonym of 1 1 main-size (Bug 1032922). The value used for the longhand flex-basis (en-US) when omitted in the shorthand is now 0%, and the one for flex-growth is now 1, both different than their initial value.
The value auto has been added to min-width and min-height with a different behavior than the last time (Bug 984711 and Bug 1015474).
An experimental implementation, disabled by default, of the filter functional values of the filter property have been implemented. It is controlled by the layout.css.filters.enabled pref. (Bug 948265)

HTML

Keine Veränderungen.

JavaScript

The ES6 syntax for computed property names on object literals has been implemented (Bug 924688).
- This includes getter and setter method names as well (Bug 1048384) and can also be used with destructuring.
The ES6 shorthand syntax for defining methods on objects has been implemented (Bug 924672).
The ES6 Object method Object.assign() has been implemented (Bug 937855).
ES6 template strings and the String.raw() method are now supported (Bug 1038259, Bug 1039774).
A new ES6 object WeakSet has been added (Bug 792439).
ES6 Symbols (only available in the Nightly channel) have been updated to conform with recent specification changes (Bug 1042602):
- When trying to convert a symbol to a number, a TypeError will be thrown now.
- When using loose equality, Object(sym) == sym returns true now.
The experimental TypedArray.prototype.move() method (only available in former Nightly and Aurora channels) has been replaced with the now implemented standard ES6 TypedArray.prototype.copyWithin() (en-US) method (Bug 1021379).
In strict mode, setting a duplicate property name in object literals will no longer throw a SyntaxError as per ES6 specification (Bug 1041128).

Interfaces/APIs/DOM

The Element.matches() (en-US) method has been added; it does what the non-standard mozMatchesSelector() was doing (Bug 886308).
The searchParams property has been added to the Location (en-US) interface, available via the document.location (en-US) and window.location (en-US) properties (Bug 1037715).
The Performance.now() method is now available to Web workers (Bug 908390).
The non-standard interface MozNamedAttrMap has been renamed to the standard NamedNodeMap (en-US) and Element.attributes (en-US) has been adapted to use it (Bug 1055467).
The non-standard methods and properties of Window.crypto (en-US) have been removed (Bug 1030963). Only methods and properties defined in the standard WebCrypto API are left.