Summary of BCD changes from through π
Browser Support Changes: +6, -0
Support increases (6)
CSS
- 
                    css β types β length β vb
                  
                  
                  
Added to Chrome β 3 of 3 engines - 
                    css β types β length β vi
                  
                  
                  
Added to Chrome β 3 of 3 engines - 
                    css β types β length β viewport_percentage_units_dynamic
                  
                  
                  
Added to Chrome β 3 of 3 engines - 
                    css β types β length β viewport_percentage_units_large
                  
                  
                  
Added to Chrome β 3 of 3 engines - 
                    css β types β length β viewport_percentage_units_small
                  
                  
                  
Added to Chrome β 3 of 3 engines 
HTTP
- 
                    http β headers β Sec-CH-Prefers-Reduced-Motion
                    
                  
                  
Added to Chrome β 1 of 3 engines 
BCD Metadata Changes: 73
Show all 73 changes
Note: The following represent changes to BCD metadata keys in the reported time period. Keys are not implementations, and they don't represent commitments toward implementation, etc. A new key occurring is perhaps a signal that some implementer was serious enough to add the key. Many of the features that are 'removed' are usually just 'moved' or 'renamed', but we don't have great ways to highlight that.
Backfilled entries (64)
The entries in this section saw support information change since the report on Friday, 11 November 2022, but all the supported browser versions given were more than a couple of months old. Typically, these are cases of support information being updated long after the support actually landed in a browser, but nobody ever updated the BCD entry.
API
- 
                      api β MIDIAccess
                    
                    
Backfilled for Firefox β 2 of 3 engines - 
                      api β MIDIAccess β inputs
                    
                    
Backfilled for Firefox β 2 of 3 engines - 
                      api β MIDIAccess β outputs
                    
                    
Backfilled for Firefox β 2 of 3 engines - 
                      api β MIDIAccess β statechange_event
                    
                    
Backfilled for Firefox β 2 of 3 engines - 
                      api β MIDIAccess β sysexEnabled
                    
                    
Backfilled for Firefox β 2 of 3 engines - 
                      api β MIDIConnectionEvent β MIDIConnectionEvent
                    
                    
Backfilled for Firefox β 2 of 3 engines - 
                      api β MIDIConnectionEvent
                    
                    
Backfilled for Firefox β 2 of 3 engines - 
                      api β MIDIConnectionEvent β port
                    
                    
Backfilled for Firefox β 2 of 3 engines - 
                      api β MIDIInput
                    
                    
Backfilled for Firefox β 2 of 3 engines - 
                      api β MIDIInput β midimessage_event
                    
                    
Backfilled for Firefox β 2 of 3 engines - 
                      api β MIDIInputMap
                    
                    
Backfilled for Firefox β 2 of 3 engines - 
                      api β MIDIInputMap β entries
                    
                    
                    
Backfilled for Firefox β 2 of 3 engines - 
                      api β MIDIInputMap β forEach
                    
                    
                    
Backfilled for Firefox β 2 of 3 engines - 
                      api β MIDIInputMap β get
                    
                    
                    
Backfilled for Firefox β 2 of 3 engines - 
                      api β MIDIInputMap β has
                    
                    
                    
Backfilled for Firefox β 2 of 3 engines - 
                      api β MIDIInputMap β keys
                    
                    
                    
Backfilled for Firefox β 2 of 3 engines - 
                      api β MIDIInputMap β size
                    
                    
                    
Backfilled for Firefox β 2 of 3 engines - 
                      api β MIDIInputMap β values
                    
                    
                    
Backfilled for Firefox β 2 of 3 engines - 
                      api β MIDIMessageEvent β MIDIMessageEvent
                    
                    
Backfilled for Firefox β 2 of 3 engines - 
                      api β MIDIMessageEvent
                    
                    
Backfilled for Firefox β 2 of 3 engines - 
                      api β MIDIMessageEvent β data
                    
                    
Backfilled for Firefox β 2 of 3 engines - 
                      api β MIDIOutput
                    
                    
Backfilled for Firefox β 2 of 3 engines - 
                      api β MIDIOutput β clear
                    
                    
Backfilled for Firefox β 1 of 3 engines - 
                      api β MIDIOutput β send
                    
                    
Backfilled for Firefox β 2 of 3 engines - 
                      api β MIDIOutputMap
                    
                    
Backfilled for Firefox β 2 of 3 engines - 
                      api β MIDIOutputMap β entries
                    
                    
                    
Backfilled for Firefox β 2 of 3 engines - 
                      api β MIDIOutputMap β forEach
                    
                    
                    
Backfilled for Firefox β 2 of 3 engines - 
                      api β MIDIOutputMap β get
                    
                    
                    
Backfilled for Firefox β 2 of 3 engines - 
                      api β MIDIOutputMap β has
                    
                    
                    
Backfilled for Firefox β 2 of 3 engines - 
                      api β MIDIOutputMap β keys
                    
                    
                    
Backfilled for Firefox β 2 of 3 engines - 
                      api β MIDIOutputMap β size
                    
                    
                    
Backfilled for Firefox β 2 of 3 engines - 
                      api β MIDIOutputMap β values
                    
                    
                    
Backfilled for Firefox β 2 of 3 engines - 
                      api β MIDIPort
                    
                    
Backfilled for Firefox β 2 of 3 engines - 
                      api β MIDIPort β close
                    
                    
Backfilled for Firefox β 2 of 3 engines - 
                      api β MIDIPort β connection
                    
                    
Backfilled for Firefox β 2 of 3 engines - 
                      api β MIDIPort β id
                    
                    
Backfilled for Firefox β 2 of 3 engines - 
                      api β MIDIPort β manufacturer
                    
                    
Backfilled for Firefox β 2 of 3 engines - 
                      api β MIDIPort β name
                    
                    
Backfilled for Firefox β 2 of 3 engines - 
                      api β MIDIPort β open
                    
                    
Backfilled for Firefox β 2 of 3 engines - 
                      api β MIDIPort β state
                    
                    
Backfilled for Firefox β 2 of 3 engines - 
                      api β MIDIPort β statechange_event
                    
                    
Backfilled for Firefox β 2 of 3 engines - 
                      api β MIDIPort β type
                    
                    
Backfilled for Firefox β 2 of 3 engines - 
                      api β MIDIPort β version
                    
                    
Backfilled for Firefox β 2 of 3 engines - 
                      api β Navigator β requestMIDIAccess
                    
                    
Backfilled for Firefox β 2 of 3 engines - 
                      api β Scheduler
                    
                    
Backfilled for Firefox β 2 of 3 engines - 
                      api β Scheduler β postTask
                    
                    
Backfilled for Firefox β 2 of 3 engines - 
                      api β TaskController β TaskController
                    
                    
Backfilled for Firefox β 2 of 3 engines - 
                      api β TaskController
                    
                    
Backfilled for Firefox β 2 of 3 engines - 
                      api β TaskController β setPriority
                    
                    
Backfilled for Firefox β 2 of 3 engines - 
                      api β TaskPriorityChangeEvent β TaskPriorityChangeEvent
                    
                    
Backfilled for Firefox β 2 of 3 engines - 
                      api β TaskPriorityChangeEvent
                    
                    
Backfilled for Firefox β 2 of 3 engines - 
                      api β TaskPriorityChangeEvent β previousPriority
                    
                    
Backfilled for Firefox β 2 of 3 engines - 
                      api β TaskSignal
                    
                    
Backfilled for Firefox β 2 of 3 engines - 
                      api β TaskSignal β priority
                    
                    
Backfilled for Firefox β 2 of 3 engines - 
                      api β TaskSignal β prioritychange_event
                    
                    
Backfilled for Firefox β 2 of 3 engines - 
                      api β scheduler
                    
                    
Backfilled for Firefox β 2 of 3 engines - 
                      api β Performance β mark β markOptions_parameter
                    
                    
                    
Backfilled for Firefox β 3 of 3 engines - 
                      api β Performance β mark β returns_performancemark
                    
                    
                    
Backfilled for Firefox β 3 of 3 engines - 
                      api β Performance β measure β measureOptions_parameter
                    
                    
                    
Backfilled for Firefox β 3 of 3 engines - 
                      api β Performance β measure β returns_performancemeasure
                    
                    
                    
Backfilled for Firefox β 3 of 3 engines - 
                      api β PerformanceObserver β PerformanceObserver β droppedEntriesCount
                        
Backfilled for Chrome β 1 of 3 engines 
CSS
- 
                      css β selectors β marker
                    
                    
Backfilled for Safari β 3 of 3 engines 
HTML
- 
                      html β manifest β id
                    
                    
Backfilled for Firefox β 2 of 3 engines 
HTTP
- 
                      http β headers β Sec-CH-Prefers-Color-Scheme
                    
                    
Backfilled for Chrome β 1 of 3 engines 
New entries (8)
The entries in this section were not found in BCD on Friday, 11 November 2022, but are now present. These usually do not have any support information attached to them, and often have no corresponding MDN page. Sometimes, entries that appear here also appear in the next section (βRemoved BCD entriesβ) because of a Working Group deciding on a rename.
API
- api β Performance β mark β markOptions_parameter
 - api β Performance β mark β returns_performancemark
 - api β Performance β measure β measureOptions_parameter
 - api β Performance β measure β returns_performancemeasure
 - api β PerformanceObserver β PerformanceObserver β droppedEntriesCount
 
HTML
- html β manifest β id
 
HTTP
- http β headers β Sec-CH-Prefers-Color-Scheme
 - http β headers β Sec-CH-Prefers-Reduced-Motion
 
Removed entries (1)
The entries in this section were found in BCD on Friday, 11 November 2022, but are no longer present. The reasons for this removal can be anything from an experimental proposal that was never supported to a property or value being renamed to something else.
API
- api β Performance β measure β returns_undefined