Firefox 110 for developers
This article provides information about the changes in Firefox 110 that will affect developers. Firefox 110 is the current Beta version of Firefox and will ship on February 14, 2023.
Changes for web developers
Developer Tools
HTML
Removals
CSS
- Container queries and container query length units are now supported by default. For more information on these queries and the related units of length, see the CSS Container Queries documentation (bug 1809720).
Removals
JavaScript
-
Serialization of native Error types now includes the
stack
property in workers when usingWorker.postMessage()
andstructuredClone()
. With this addition, cloning native error stacks now works for all methods that use the structured clone algorithm, in both the main thread and workers. (See bug 1774866 for more details.)
Removals
SVG
Removals
HTTP
Removals
Security
Removals
APIs
-
The
midi
permission of the Permission API is now supported. This allows the permission status for using the Web MIDI API to be queried usingnavigator.permissions.query()
(bug 1772166).
DOM
-
The
contentvisibilityautostatechanged
event and associatedContentVisibilityAutoStateChangedEvent
interface are now supported. The event can be used by application code to stop processes related to rendering the element when the user agent is skipping its contents. (bug 1798485).
Media, WebRTC, and Web Audio
Removals
WebAssembly
Removals
WebDriver conformance (WebDriver BiDi, Marionette)
WebDriver BiDi
Marionette
Changes for add-on developers
- The
defaultZoomFactor
property oftabs.ZoomSettings
now returns the value of the default zoom factor setting (bug 1772166)
Removals
Other
Older versions
- Firefox 109 for developers
- Firefox 108 for developers
- Firefox 107 for developers
- Firefox 106 for developers
- Firefox 105 for developers
- Firefox 104 for developers
- Firefox 103 for developers
- Firefox 102 for developers
- Firefox 101 for developers
- Firefox 100 for developers
- Firefox 99 for developers
- Firefox 98 for developers
- Firefox 97 for developers
- Firefox 96 for developers
- Firefox 95 for developers
- Firefox 94 for developers
- Firefox 93 for developers
- Firefox 92 for developers
- Firefox 91 for developers
- Firefox 90 for developers
- Firefox 89 for developers
- Firefox 88 for developers
- Firefox 87 for developers
- Firefox 86 for developers
- Firefox 85 for developers
- Firefox 84 for developers
- Firefox 83 for developers
- Firefox 82 for developers
- Firefox 81 for developers
- Firefox 80 for developers
- Firefox 79 for developers