Firefox 26 for developers

• 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 (bug 812995).
• 非标准的 -moz-text-blink 属性已被删除 (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.

• 实现了 ES6 中的 Math: Math.fround() 方法 (bug 900125).

• 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 (bug 887364).
• The properties URLUtils.origin, URLUtils.password, and URLUtils.username are now available to all interfaces implementing URLUtils: URL, Location, HTMLAnchorElement, and HTMLAreaElement (bug 887364).
• The URL interface is now accessible from Web Workers (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 (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> (en-US), <msub>, <msup> and <msubsup> have been unified and the error handling of these elements has been improved (bug 827713).

No change.

• Firefox 26 网站兼容性