Firefox 26 for developers

Web 开发者需要注意的变化

text-decoration-line 属性仍然带有前缀，不过现在它把 'blink' 也看看成了它的合法属性值，虽然并不会真正的让内容产生闪烁效果 (Firefox bug 812995).
非标准的 -moz-text-blink 属性已被删除 (Firefox bug 812995).
实现了 CSS Image Values Level 4 中的 image-orientation 属性，比起 Level 3, Level 4 增加了对 from-image 关键字和 EXIF 的支持。
支持了 position:sticky，需要开启 layout.css.sticky.enabled 选项（Firefox bug 886646）。

No change.

DOMImplementation.createDocument 方法的第三个参数 doctype 成为可选参数（Firefox bug 909859）。
实现了新的 element.classList 规范，可以同时添加或删除多个类名，比如 element.classList.add("x", "y", "z")（Firefox bug 814014）。
实现了 URL() 构造函数 (Firefox bug 887364).
The properties URLUtils.origin, URLUtils.password, and URLUtils.username are now available to all interfaces implementing URLUtils: URL, Location, HTMLAnchorElement, and HTMLAreaElement (Firefox bug 887364).
The URL interface is now accessible from Web Workers (Firefox bug 887364).
IndexedDB can now be used as a "optimistic" storage area so it doesn't require any prompts and data is stored in a pool with LRU eviction policy, in short temporary storage (Firefox bug 785884).
Path of the persistent storage has been changed from <profile>/indexedDB to <profile>/storage/persistent (on b2g from /data/local/indexedDB to /data/local/storage/persistent).

Inconsistent renderings of <mmultiscripts>, <msub>, <msup> and <msubsup> have been unified and the error handling of these elements has been improved (Firefox bug 827713).