官方版本88.0预计在 2021年04月20日(美国时间) 台湾时间04月20日~04月21日 更新
更新日志
https://www.mozilla.org/en-US/firefox/87.0/releasenotes/
New︰
You’ll encounter less website breakage in Private Browsing and Strict
Enhanced Tracking Protection with SmartBlock, which provides stand-in scripts
https://blog.mozilla.org/security/2021/03/23/introducing-smartblock/
so that websites load properly.
To further protect your privacy, our new default HTTP Referrer policy
https://blog.mozilla.org/security/?p=2704
will trim path and query string information from referrer headers to prevent
sites from accidentally leaking sensitive user data.
The “Highlight All” feature on Find in Page now displays tick marks
alongside your scrollbar that correspond to the location of matches found on
that page.
We’re proud to announce full support for macOS built-in screen reader,
VoiceOver.
https://blog.mozilla.org/accessibility/?p=20
We’ve added a new locale: Silesian (szl)
Fixed︰
We’ve fixed several significant accessibility issues:
．Video controls now have visible focus styling and video and audio
controls are now keyboard navigable. (Bug 1681007)
https://bugzilla.mozilla.org/1681007
．HTML <meter> is now spoken by screen readers. (Bug 1460378)
https://bugzilla.mozilla.org/1460378
．Firefox now sets a useful initial focus in Add-ons Manager. (Bug
580537)
https://bugzilla.mozilla.org/580537
．Firefox will now fire a name/description change event when
aria-labelledby/describedby content changes. (Bug 493683)
https://bugzilla.mozilla.org/493683
Various security fixes.
https://www.mozilla.org/security/known-vulnerabilities/firefox/#firefox87
Changed︰
To prevent user data loss when filling out forms, we’ve disabled the
Backspace key as a navigation shortcut for the back navigation button. To
re-enable the Backspace keyboard shortcut, you can change the about:config
preference browser.backspace_action to 0. You can also use the recommended
Alt + Left arrow (Command + Left arrow on Mac) shortcut instead.
Firefox keyboard shortcuts
https://tinyurl.com/274wyt5s
We've removed items from the Library menu that weren't used often or have
other access points in the browser: Synced tabs, Recent highlights, and
Pocket list.
We've simplified the Help menu by reducing redundant items, such as those
that point to Firefox support pages that can also be accessed via the Get
Help item.
Enterprise︰
Various bug fixes and new policies have been implemented in the latest
version of Firefox. You can see more details in the Firefox for Enterprise 87
Release Notes.
https://support.mozilla.org/kb/firefox-enterprise-87-release-notes
Developer︰
We've greatly simplified the Web Developer menu. Go to Application Menu >
Web Developer > Web Developer Tools to access Inspector, Web Console, Debugger,
Network Style Error, Performance, Storage Inspector, Accessibility, and
Application
Developers can now use the Page Inspector to simulate prefers-color-scheme
https://is.gd/GqLODo
https://developer.mozilla.org/docs/Web/CSS/@media/prefers-color-scheme
media queries, without having to change the operating system to light or dark
mode.
Developers can now use the Page Inspector to toggle the :target
https://developer.mozilla.org/docs/Web/CSS/:target
pseudo-class for the currently selected element in addition to the pseudo-classes
that were previously supported: :hover, :active and :focus, :focus-within,
https://developer.mozilla.org/docs/Web/CSS/:hover
https://developer.mozilla.org/docs/Web/CSS/:active
https://developer.mozilla.org/docs/Web/CSS/:focus
https://developer.mozilla.org/docs/Web/CSS/:focus-within
:focus-visible, and :visited.
https://developer.mozilla.org/docs/Web/CSS/:focus-visible
https://developer.mozilla.org/docs/Web/CSS/:visited
There is a number of Page Inspector improvements and bug fixes related to
inactive CSS rules:
The table-layout property is now marked as inactive for non-table
https://developer.mozilla.org/docs/Web/CSS/table-layout
elements.
The scroll-padding properties (shorthand and longhand) are now marked as
https://developer.mozilla.org/docs/Web/CSS/scroll-padding
inactive for non-scrollable elements.
The text-overflow property was previously incorrectly marked as inactive
https://developer.mozilla.org/docs/Web/CSS/text-overflow
for some overflow values.