Firefox Version 84

Firefox Download For Windows 10 64 Bit
Firefox Version 84
Firefox Version 84

Firefox's features are robust and generally competitive. Sennheiser for mac. For mac sketchup. The most important feature in the modern Firefox is Sync.Sync now smoothly syncs your bookmarks, passwords, preferences, history, and tabs, not only with other computers, but also with your Android version of Firefox.

Index of /pub/firefox/releases/ Type Name Size Last Modified; Dir. Dir: 0.10.1/ Dir: 0.10/ Dir: 0.10rc/ Dir: 0.8/ Dir: 0.9.1/.
The About Firefox window will appear. The version number is listed underneath the Firefox name. Here is an example of what the About Firefox window will look like: Opening the About Firefox window will, by default, start an update check. If an updated version of Firefox is available, it.

This article provides information about the changes in Firefox 84 that will affect developers. Firefox 84 was released on December 15, 2020. Gopro codec for mac.

Note: See also And now for … Firefox 84 on Mozilla Hacks.

Changes for web developers

Developer Tools

The Firefox Accessibility Inspector now supports displaying the keyboard tab order on a web page. This provides a better high-level overview of how the page will be navigated using the keyboard than tabbing through the links (bug 1654956).

HTML

CSS

We've added support for complex selectors to the :not pseudo-class (bug 933562).

Removals

We've removed the proprietary -moz-default-appearance property values scrollbar-small (scrollbar-width: thin is used instead) and scrollbar (macOS only; scrollbar-horizontal and scrollbar-vertical are used instead) (bug 1673132).

JavaScript

Firefox Download For Windows 10 64 Bit

Custom date/time formats specified as options to the Intl.DateTimeFormat() constructor can now include fractionalSecondDigits — the number of digits used to represent fractions of a second (bug 1645107).

HTTP

Security

Firefox now ensures that localhost URLs — such as http://localhost/ and http://dev.localhost/ — refer to the local host's loopback interface (e.g. http://127.0.0.1). As a result, resources loaded from localhost are now assumed to have been delivered securely (see Secure contexts), and also will not be treated as mixed content (bug 1220810, bug 1488740).

APIs

We've added support for the PerformancePaintTiming interface of the Paint Timing API (bug 1518999).
The Navigator.registerProtocolHandler() method now only accepts two parameters: scheme and url. title has been removed (bug 1631464).

Media, WebRTC, and Web Audio

The MediaRecorder.start() method now throws an InvalidModificationError if the number of tracks on the stream being recorded has changed (bug 1581139).

Removals

The application cache has been removed — developers should use the Service Worker API instead (bug 1619673).

WebAssembly

WebDriver conformance (Marionette)

Added chrome scope support for WebDriver:PerformActions and WebDriver:ReleaseActions (bug 1365886).
The new Fission-compatible API has been enabled by default now. To revert to the former API the marionette.actors.enabled preference has to be set to false (bug 1669169).
Fixed WebDriver:SwitchToWindow to always switch back to the top-level browsing context (bug 1305822).
Improved browsing context checks for WebDriver:SwitchToParentFrame (bug 1671622).
Fixed a hang for WebDriver:Back encountered when the currently-selected <iframe> gets unloaded (bug 1672758).

Known bugs

After page navigation, accessing a previously-retrieved element might not always raise a 'stale element' error, and can also lead to a 'no such element' error. To prevent this, set the marionette.actors.enabled preference to false (bug 1684827).