Firefox 17 for developers

草案
本页尚未完工.

Firefox 17, based on Gecko 17, will ship in November 2012. This article provides information about the changes in this release that will affect developers. Nightly builds of what will become Firefox 17 are currently available on the Aurora channel.

Note: Items listed here are tentatively slated for Firefox 17; however, they may be held for a future release if testing shows they're not ready by the time Firefox 17 is due to ship. Please keep an eye on this page to stay up to date on the plans for Firefox 17.

Want to help document Firefox 17? See the list of bugs that need to be written about and pitch in!

WEB开发者需要注意的变化

HTML

支持了<iframe>元素的sandbox 属性 (bug 341604)
支持了<input>元素的inputmode属性. (注意:目前该属性在Gecko中的实现不符合WHATWG HTML 规范.) (bug 746142)

CSS

支持了定义在 CSS3 Conditional Rules specification中的@supports at-rule. (bug 649740)
支持了CSS4级选择器中的:dir()伪类,该伪类允许基于元素的方向性来选择元素. (bug 562169)
支持了CSS unicode-bidi 属性中新添加的isolate-override 属性值. (bug 774335)
我们的带前缀版本的box-sizing现在考虑到了min-height和max-height的影响.马上就要去掉前缀了. (bug 308801)

DOM

支持了定义在 CSS3 Conditional Rules specification 中的CSSSupportsRule 接口. (bug 649740)
支持了 WheelEvent 对象和 wheel事件 (bug 719320).
在linux上又一次支持了DOM Meta 键 (bug 751749).

JavaScript

支持了Harmony中String对象的startsWith, endsWith, 以及 contains 方法. (bug 772733)
实验性的支持了strawman ParallelArray对象. (bug 778559)
支持了遍历 Map/Set. (bug 725909)
在web页面上默认禁用E4X(bug 778851)

WebGL

SVG

MathML

XUL

XUL key 元素支持了 "os" 修饰符,也就是Win键(Super键或者Hyper键) (bug 751749).

网络

开发者工具

附加组件和Mozilla开发者需要注意的变化

接口变化

nsIInputStream: available() 方法返回一个64位的长度而不是32位的. (bug 215450)
nsIDOMWindowUtils: sendMouseScrollEvent()方法被sendWheelEvent()替换. (bug 719320)

新增接口

移除接口

下面的接口已经被移除.