草案
本页尚未完工.
Firefox 26 Aurora (pre-Beta) will be released on . While it has been developed to maintain compatibility as much as possible, the new version includes some changes affecting backward compatibility aimed at improving interoperability with the other browsers or following the latest Web standards. Here's the list of such changes — hope this helps whenever you test your sites or applications.
This article only explains the changes that may affect backward compatibility for Websites. For the other new features and changes, please read the following documents:
This list may be updated until the release of the final version on , so please check back later. Follow @MozWebCompat on Twitter for further updates.
CSS
-moz-text-blink
has been removed in favor of -moz-text-decoration-line:blink
The non-standard -moz-text-blink
property has been removed. Instead, the standard, still prefixed text-decoration-line
property now takes blink
as a valid value. Actually it doesn't blink any content on Firefox though, from the perspective of accessibility. Note that the blink effect with text-decoration:blink
has been dropped with Firefox 23.
DOM
type 属性不是 image 的 HTMLInputElement 元素的 width 和 height 属性会返回 0
Previously, the width
and height
properties of an <input>
returned the dimension of the element. To comply with the spec, those properties now return 0
if the type
property is not image
.
Setting document.domain
in a sandboxed iframe
is no longer allowed
Setting the document.domain
property on a page embedded in an <iframe>
with the sandbox
attribute will throw a security error from now on.
元素的 id 改变后,旧 id 不再是 window 对象的属性
An element with id
is accessible through window.<id>
. Previously, the DOM object remained on window
even after the id
of the element is programmatically changed. This odd behavior has been fixed with Firefox 26. The document.getElementById
method, which is recommended to use in general, is not affected by this change.
MessageEvent
has been updated
The MessageEvent
interface has been updated to comply with the latest spec. The initMessageEvent
method has been removed while the interface is now a constructor.
HTMLCanvasElement.mozGetAsFile
has been deprecated
The non-standard mozGetAsFile
method on the HTMLCanvasElement
interface is now deprecated and will be removed soon. The standard toBlob
method can be used instead.
UserDataHandler
has been removed
The deprecated UserDataHandler
interface has been removed. The Node.setUserData
and Node.getUserData
methods have already been removed with Firefox 22.
XBL-related methods have been removed
The following methods on the XBL DOM Interface have been removed from the Document
interface: getAnonymousNodes
, getAnonymousElementByAttribute
, getBindingParent
and loadBindingDocument
.
Various non-standard interfaces have been removed
- Bug 899388 – Remove XUL-related interfaces and ChromeWindow from content
- Bug 905739 – Remove nsIDOMStorageIndexedDB
- Bug 909340 – Hide XULElement from content
As part of the ongoing effort to standardize global objects, the following non-standard interfaces have been removed: ChromeWindow
, StorageIndexedDB
, XULButtonElement
, XULCheckboxElement
, XULCommandDispatcher
, XULCommandEvent
, XULControlElement
, XULDocument
, XULElement
, XULLabeledControlElement
and XULPopupElement
.
JavaScript
The reserved words are no longer allowed as function names
The reserved words cannot be used for function names. Starting with Firefox 26, such a usage will throw a SyntaxError
. For example, function delete() { ... }
is illegal.
Plug-ins
All plug-ins except Flash are now defaulted to Click-to-Play
Starting with Firefox 26, plug-ins require user interaction to be activated. With the exception of the popular Adobe Flash Player, all plug-in content embedded in a Web page is now disabled by default and enabled by user's click. This change has been made in order to improve security and performance of the browser. See the Mozilla Security Blog for details. Web developers are encouraged to leverage modern Web technologies, including HTML5, to provide richer user experience.