Firefox 40 pour développeurs - Mozilla

Outils pour Développeurs

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Autres: Tous les bugs devtools corrigés depuis Firefox 39 et Firefox 40.

CSS

Règles de préfixe (-moz-) pour text-decoration-color, text-decoration-line, et text-decoration-style ont été supprimé (bug Firefox 1097922).
La propriété text-align supporte dorénavant la valeur match-parent (bug Firefox 645642).
Dans le mode Quirks, empty-cells a pour valeur par défaut show, comme dans le mode standard (bug Firefox 1020400).
La propriété non standard -moz-orient, utilisée pour faire un rendu sur les éléments <meter> et <progress> a été adaptée pour les modes d'écriture verticales: la valeur auto a été supprimée et les valeurs inline et block ajoutées, avec inline comme nouvelle valeur par défaut (bug Firefox 1028716).

HTML

pas de changement.

JavaScript

Unreachable code after return statement (including unreachable expression after semicolon-less return statements) will now show a warning in the console (bug Firefox 1005110, bug Firefox 1151931).
Symbol.match a été ajouté (bug Firefox 1054755).
Passing an object which has a property named Symbol.match with a truthy value to String.prototype.startsWith, String.prototype.endsWith, and String.prototype.contains now throws a TypeError (bug Firefox 1054755).
RegExp function returns pattern itself if called without new and pattern object has a property named Symbol.match with a truthy value, and the pattern object's constructor property equals to RegExp function. (bug Firefox 1147817).
Support for the non-standard JS1.7 destructuring for-in has been dropped (bug Firefox 1083498).
Les initialiseurs d'expression non-standard dans les boucles for...in sont dorénavant ignorés et seront indiqués par un avertissement dans la console. (bug Firefox 748550 et bug Firefox 1164741).
\u{xxxxxx} Unicode code point escapes have been added (bug Firefox 320500).
String.prototype.contains has been replaced with String.prototype.includes, String.prototype.contains is kept as an alias (bug Firefox 1102219).
If the DataView constructor is called as a function without the new operator, a TypeError is now thrown as per the ES6 specification.
An issue regressed in Firefox 21, where proxyfied arrays without the get trap were not working properly, has been fixed. If the get trap in a Proxy was not defined, Array.length returned 0 and the set trap didn't get called. A workaround was to add the get trap even if was not necessary in your code. This issue has been fixed now (bug Firefox 895223).
WeakMap.prototype and WeakSet.prototype have been updated to be just ordinary objects, per ES6 specification (bug Firefox 1055473).
The RegExp.prototype.source property is now prototype accessor property rather than own data property of RegExp instances (bug Firefox 1120169, bug Firefox 1150297).

Interfaces/APIs/DOM

Nouvelles APIs

Implementation de l'API Push (bug Firefox 1038811).

Web Animations API

Amélioration de notre implémentation des animations Web expérimentales, principalement mostley to match latest spec changes:

AnimationPlayer.currentTime now can also be set (bug Firefox 1072037).
Animatable.getAnimationPlayers(), available on Element has been renamed to Element.getAnimations() (bug Firefox 1145246).
Animation and AnimationEffect have been merged into the newly created KeyframeEffectReadOnly (bug Firefox 1153734).
AnimationPlayer has been renamed to Animation (bug Firefox 1154615).
AnimationTimeline is now an abstract class, with DocumentTimeline its only implementation (bug Firefox 1152171).

CSSOM

The CSS Font Loading API is now enabled by default in Nightly and Developer Edition releases (bug Firefox 1088437). It is still deactivated by default in Beta and Release browsers.
The CSSCharsetRule interface has been removed and such objects are no longer available in CSSOM (bug Firefox 1148694). This matches the spec (recently adapted) and Chrome behavior.

WebRTC

WebRTC: the negotiationneeded event is now also sent for initial negotiations, not only for re-negotiations (bug Firefox 1149838).

DOM & HTML DOM

When unable to parse the srcset, the HTMLImageElement.currentSrc method doesn't return null anymore but "", as requested by the latest specification (bug Firefox 1139560).
Like for images, Firefox now throttle Window.requestAnimationFrame() for non-visible <iframe> (bug Firefox 1145439).
Navigator.taintEnabled is no longer available for Web workers (bug Firefox 1154878).
The read-only properties MouseEvent.offsetX and MouseEvent.offsetY have been implemented bug Firefox 69787.

Web Audio API

Nouvelles extensions pour l'API Web Audio:

The AudioContext.state and AudioContext.onstatechange properties as well as the methods AudioContext.suspend(), AudioContext.resume(), and AudioContext.close() have been added (bug Firefox 1094764).
AudioBufferSourceNode now implements the AudioBufferSourceNode.detune k-rate attribute (bug Firefox 1153783).

Web Workers

Légère amélioration dans notre API Service Worker : la méthode update() a été changée de ServiceWorkerGlobalScope vers ServiceWorkerRegistration (bug Firefox 1131350).
ServiceWorkerRegistration est maintenant disponible dans les Web workers (bug Firefox 1131327).
DataStore est maintenant disponible dans les Web workers (bug Firefox 916196).

IndexedDB

IDBTransaction sont maintenant temporaire par default. (bug Firefox 1112702). Cela privilegie les performances par rapport a la fiabilité et est en phase les autres navigateurs. Pour plus d'information, lire notre durability definition.

Dev Tools

La propriété Console.timeStamp a été ajoutée (bug Firefox 922221).

MathML

pas de changement.

SVG

pas de changement.

Audio/Video

pas de changement.

Networking

pas de changement.

Security

L'utilisation d'un asterisk (*) dans CSP n'inclus plus le schema data:, blob: or :filesystem lors de la comparaison des expressions sources. Ces schemas doivent dorénavant etre définis explicitement dans l'entete concernée afin de correspondre au CSP (bug Firefox 1086999).