BCD Watch

API

1. api ➞ CSSStyleSheet ➞ CSSStyleSheet
   Backfilled for Firefox  ➞  2 of 3 engines
2. api ➞ CSSStyleSheet ➞ replace
   Backfilled for Firefox  ➞  2 of 3 engines
3. api ➞ CSSStyleSheet ➞ replaceSync
   Backfilled for Firefox  ➞  2 of 3 engines
4. api ➞ CanvasRenderingContext2D ➞ createConicGradient
   Backfilled for Firefox  ➞  3 of 3 engines
5. api ➞ Clipboard ➞ read
   Backfilled for Firefox  ➞  2 of 3 engines
6. api ➞ Document ➞ adoptedStyleSheets
   Backfilled for Firefox  ➞  2 of 3 engines
7. api ➞ Document ➞ getAnimations
   Backfilled for Chrome  ➞  2 of 3 engines
8. api ➞ Element ➞ animate ➞ options_composite_parameter
   Backfilled for Firefox  ➞  2 of 3 engines
9. api ➞ Element ➞ animate ➞ options_iterationComposite_parameter
   Backfilled for Firefox  ➞  1 of 3 engines
10. api ➞ Element ➞ part
    Backfilled for Firefox  ➞  3 of 3 engines
11. api ➞ ElementInternals ➞ form
    Backfilled for Firefox  ➞  2 of 3 engines
12. api ➞ ElementInternals ➞ labels
    Backfilled for Firefox  ➞  2 of 3 engines
13. api ➞ ElementInternals ➞ setFormValue
    Backfilled for Firefox  ➞  2 of 3 engines
14. api ➞ ElementInternals ➞ willValidate
    Backfilled for Firefox  ➞  2 of 3 engines
15. api ➞ HTMLDialogElement
    Backfilled for Firefox  ➞  3 of 3 engines
16. api ➞ HTMLDialogElement ➞ cancel_event
    Backfilled for Firefox  ➞  3 of 3 engines
17. api ➞ HTMLDialogElement ➞ close
    Backfilled for Firefox  ➞  3 of 3 engines
18. api ➞ HTMLDialogElement ➞ open
    Backfilled for Firefox  ➞  3 of 3 engines
19. api ➞ HTMLDialogElement ➞ returnValue
    Backfilled for Firefox  ➞  3 of 3 engines
20. api ➞ HTMLDialogElement ➞ show
    Backfilled for Firefox  ➞  3 of 3 engines
21. api ➞ HTMLDialogElement ➞ showModal
    Backfilled for Firefox  ➞  3 of 3 engines
22. api ➞ HTMLElement ➞ beforeinput_event
    Backfilled for Firefox  ➞  3 of 3 engines
23. api ➞ HTMLElement ➞ enterKeyHint
    Backfilled for Firefox  ➞  3 of 3 engines
24. api ➞ HTMLElement ➞ inert
    Backfilled for Chrome  ➞  3 of 3 engines
25. api ➞ HTMLElement ➞ inputMode
    Backfilled for Firefox  ➞  3 of 3 engines
26. api ➞ HTMLIFrameElement ➞ featurePolicy
    Backfilled for Firefox  ➞  2 of 3 engines
27. api ➞ InputEvent ➞ getTargetRanges
    Backfilled for Firefox  ➞  3 of 3 engines
28. api ➞ KeyframeEffect ➞ pseudoElement
    Backfilled for Chrome  ➞  3 of 3 engines
29. api ➞ Lock
    Backfilled for Firefox  ➞  3 of 3 engines
30. api ➞ Lock ➞ mode
    Backfilled for Firefox  ➞  3 of 3 engines
31. api ➞ Lock ➞ name
    Backfilled for Firefox  ➞  3 of 3 engines
32. api ➞ LockManager
    Backfilled for Firefox  ➞  3 of 3 engines
33. api ➞ LockManager ➞ query
    Backfilled for Firefox  ➞  3 of 3 engines
34. api ➞ LockManager ➞ request
    Backfilled for Firefox  ➞  3 of 3 engines
35. api ➞ MediaCapabilities ➞ encodingInfo
    Backfilled for Chrome  ➞  3 of 3 engines
36. api ➞ MediaMetadata ➞ MediaMetadata
    Backfilled for Firefox  ➞  3 of 3 engines
37. api ➞ MediaMetadata
    Backfilled for Firefox  ➞  3 of 3 engines
38. api ➞ MediaMetadata ➞ album
    Backfilled for Firefox  ➞  3 of 3 engines
39. api ➞ MediaMetadata ➞ artist
    Backfilled for Firefox  ➞  3 of 3 engines
40. api ➞ MediaMetadata ➞ artwork
    Backfilled for Firefox  ➞  3 of 3 engines
41. api ➞ MediaMetadata ➞ title
    Backfilled for Firefox  ➞  3 of 3 engines
42. api ➞ MediaSession
    Backfilled for Firefox  ➞  3 of 3 engines
43. api ➞ MediaSession ➞ metadata
    Backfilled for Firefox  ➞  3 of 3 engines
44. api ➞ MediaSession ➞ playbackState
    Backfilled for Firefox  ➞  3 of 3 engines
45. api ➞ MediaSession ➞ setActionHandler
    Backfilled for Firefox  ➞  3 of 3 engines
46. api ➞ MediaSession ➞ setPositionState
    Backfilled for Firefox  ➞  3 of 3 engines
47. api ➞ NavigationPreloadManager
    Backfilled for Firefox  ➞  3 of 3 engines
48. api ➞ NavigationPreloadManager ➞ disable
    Backfilled for Firefox  ➞  3 of 3 engines
49. api ➞ NavigationPreloadManager ➞ enable
    Backfilled for Firefox  ➞  3 of 3 engines
50. api ➞ NavigationPreloadManager ➞ getState
    Backfilled for Firefox  ➞  3 of 3 engines
51. api ➞ NavigationPreloadManager ➞ setHeaderValue
    Backfilled for Firefox  ➞  3 of 3 engines
52. api ➞ Navigator ➞ locks
    Backfilled for Firefox  ➞  3 of 3 engines
53. api ➞ Navigator ➞ mediaSession
    Backfilled for Firefox  ➞  3 of 3 engines
54. api ➞ OES_fbo_render_mipmap
    Backfilled for Firefox  ➞  3 of 3 engines
55. api ➞ ReadableByteStreamController
    Backfilled for Firefox  ➞  2 of 3 engines
56. api ➞ ReadableByteStreamController ➞ byobRequest
    Backfilled for Firefox  ➞  2 of 3 engines
57. api ➞ ReadableByteStreamController ➞ close
    Backfilled for Firefox  ➞  2 of 3 engines
58. api ➞ ReadableByteStreamController ➞ desiredSize
    Backfilled for Firefox  ➞  2 of 3 engines
59. api ➞ ReadableByteStreamController ➞ enqueue
    Backfilled for Firefox  ➞  2 of 3 engines
60. api ➞ ReadableByteStreamController ➞ error
    Backfilled for Firefox  ➞  2 of 3 engines
61. api ➞ ReadableStream ➞ pipeThrough
    Backfilled for Firefox  ➞  3 of 3 engines
62. api ➞ ReadableStream ➞ pipeTo
    Backfilled for Firefox  ➞  3 of 3 engines
63. api ➞ ReadableStream ➞ transferable
    Backfilled for Firefox  ➞  2 of 3 engines
64. api ➞ ReadableStreamBYOBReader ➞ ReadableStreamBYOBReader
    Backfilled for Firefox  ➞  2 of 3 engines
65. api ➞ ReadableStreamBYOBReader
    Backfilled for Firefox  ➞  2 of 3 engines
66. api ➞ ReadableStreamBYOBReader ➞ cancel
    Backfilled for Firefox  ➞  2 of 3 engines
67. api ➞ ReadableStreamBYOBReader ➞ closed
    Backfilled for Firefox  ➞  2 of 3 engines
68. api ➞ ReadableStreamBYOBReader ➞ read
    Backfilled for Firefox  ➞  2 of 3 engines
69. api ➞ ReadableStreamBYOBReader ➞ releaseLock
    Backfilled for Firefox  ➞  2 of 3 engines
70. api ➞ ReadableStreamBYOBRequest
    Backfilled for Firefox  ➞  2 of 3 engines
71. api ➞ ReadableStreamBYOBRequest ➞ respond
    Backfilled for Firefox  ➞  2 of 3 engines
72. api ➞ ReadableStreamBYOBRequest ➞ respondWithNewView
    Backfilled for Firefox  ➞  2 of 3 engines
73. api ➞ ReadableStreamBYOBRequest ➞ view
    Backfilled for Firefox  ➞  2 of 3 engines
74. api ➞ ShadowRoot ➞ adoptedStyleSheets
    Backfilled for Firefox  ➞  2 of 3 engines
75. api ➞ ShadowRoot ➞ getAnimations
    Backfilled for Chrome  ➞  3 of 3 engines
76. api ➞ TextMetrics ➞ fontBoundingBoxAscent
    Backfilled for Chrome  ➞  3 of 3 engines
77. api ➞ TextMetrics ➞ fontBoundingBoxDescent
    Backfilled for Chrome  ➞  3 of 3 engines
78. api ➞ TransformStream ➞ TransformStream
    Backfilled for Firefox  ➞  3 of 3 engines
79. api ➞ TransformStream
    Backfilled for Firefox  ➞  3 of 3 engines
80. api ➞ TransformStream ➞ readable
    Backfilled for Firefox  ➞  3 of 3 engines
81. api ➞ TransformStream ➞ transferable
    Backfilled for Firefox  ➞  2 of 3 engines
82. api ➞ TransformStream ➞ writable
    Backfilled for Firefox  ➞  3 of 3 engines
83. api ➞ TransformStreamDefaultController
    Backfilled for Firefox  ➞  3 of 3 engines
84. api ➞ TransformStreamDefaultController ➞ desiredSize
    Backfilled for Firefox  ➞  3 of 3 engines
85. api ➞ TransformStreamDefaultController ➞ enqueue
    Backfilled for Firefox  ➞  3 of 3 engines
86. api ➞ TransformStreamDefaultController ➞ error
    Backfilled for Firefox  ➞  3 of 3 engines
87. api ➞ TransformStreamDefaultController ➞ terminate
    Backfilled for Firefox  ➞  3 of 3 engines
88. api ➞ URLPattern ➞ URLPattern
    Backfilled for Chrome  ➞  1 of 3 engines
89. api ➞ URLPattern
    Backfilled for Chrome  ➞  1 of 3 engines
90. api ➞ URLPattern ➞ exec
    Backfilled for Chrome  ➞  1 of 3 engines
91. api ➞ URLPattern ➞ hash
    Backfilled for Chrome  ➞  1 of 3 engines
92. api ➞ URLPattern ➞ hostname
    Backfilled for Chrome  ➞  1 of 3 engines
93. api ➞ URLPattern ➞ password
    Backfilled for Chrome  ➞  1 of 3 engines
94. api ➞ URLPattern ➞ pathname
    Backfilled for Chrome  ➞  1 of 3 engines
95. api ➞ URLPattern ➞ port
    Backfilled for Chrome  ➞  1 of 3 engines
96. api ➞ URLPattern ➞ protocol
    Backfilled for Chrome  ➞  1 of 3 engines
97. api ➞ URLPattern ➞ search
    Backfilled for Chrome  ➞  1 of 3 engines
98. api ➞ URLPattern ➞ test
    Backfilled for Chrome  ➞  1 of 3 engines
99. api ➞ URLPattern ➞ username
    Backfilled for Chrome  ➞  1 of 3 engines
100. api ➞ VisualViewport
     Backfilled for Firefox  ➞  3 of 3 engines
101. api ➞ VisualViewport ➞ height
     Backfilled for Firefox  ➞  3 of 3 engines
102. api ➞ VisualViewport ➞ offsetLeft
     Backfilled for Firefox  ➞  3 of 3 engines
103. api ➞ VisualViewport ➞ offsetTop
     Backfilled for Firefox  ➞  3 of 3 engines
104. api ➞ VisualViewport ➞ pageLeft
     Backfilled for Firefox  ➞  3 of 3 engines
105. api ➞ VisualViewport ➞ pageTop
     Backfilled for Firefox  ➞  3 of 3 engines
106. api ➞ VisualViewport ➞ resize_event
     Backfilled for Firefox  ➞  2 of 3 engines
107. api ➞ VisualViewport ➞ scale
     Backfilled for Firefox  ➞  3 of 3 engines
108. api ➞ VisualViewport ➞ scroll_event
     Backfilled for Firefox  ➞  2 of 3 engines
109. api ➞ VisualViewport ➞ width
     Backfilled for Firefox  ➞  3 of 3 engines
110. api ➞ Window ➞ unhandledrejection_event
     Backfilled for Firefox  ➞  3 of 3 engines
111. api ➞ Window ➞ visualViewport
     Backfilled for Firefox  ➞  3 of 3 engines
112. api ➞ WritableStream ➞ WritableStream
     Backfilled for Firefox  ➞  3 of 3 engines
113. api ➞ WritableStream
     Backfilled for Firefox  ➞  3 of 3 engines
114. api ➞ WritableStream ➞ abort
     Backfilled for Firefox  ➞  3 of 3 engines
115. api ➞ WritableStream ➞ close
     Backfilled for Firefox  ➞  3 of 3 engines
116. api ➞ WritableStream ➞ getWriter
     Backfilled for Firefox  ➞  3 of 3 engines
117. api ➞ WritableStream ➞ locked
     Backfilled for Firefox  ➞  3 of 3 engines
118. api ➞ WritableStream ➞ transferable
     Backfilled for Firefox  ➞  2 of 3 engines
119. api ➞ WritableStreamDefaultController
     Backfilled for Firefox  ➞  3 of 3 engines
120. api ➞ WritableStreamDefaultController ➞ error
     Backfilled for Firefox  ➞  3 of 3 engines
121. api ➞ WritableStreamDefaultController ➞ signal
     Backfilled for Firefox  ➞  2 of 3 engines
122. api ➞ WritableStreamDefaultWriter ➞ WritableStreamDefaultWriter
     Backfilled for Firefox  ➞  2 of 3 engines
123. api ➞ WritableStreamDefaultWriter
     Backfilled for Firefox  ➞  3 of 3 engines
124. api ➞ WritableStreamDefaultWriter ➞ abort
     Backfilled for Firefox  ➞  3 of 3 engines
125. api ➞ WritableStreamDefaultWriter ➞ close
     Backfilled for Firefox  ➞  3 of 3 engines
126. api ➞ WritableStreamDefaultWriter ➞ closed
     Backfilled for Firefox  ➞  3 of 3 engines
127. api ➞ WritableStreamDefaultWriter ➞ desiredSize
     Backfilled for Firefox  ➞  3 of 3 engines
128. api ➞ WritableStreamDefaultWriter ➞ ready
     Backfilled for Firefox  ➞  3 of 3 engines
129. api ➞ WritableStreamDefaultWriter ➞ releaseLock
     Backfilled for Firefox  ➞  3 of 3 engines
130. api ➞ WritableStreamDefaultWriter ➞ write
     Backfilled for Firefox  ➞  3 of 3 engines
131. api ➞ AudioParamMap ➞ @@iterator
     Backfilled for Firefox  ➞  3 of 3 engines
132. api ➞ CSSImportRule ➞ layerName
     Backfilled for Firefox  ➞  3 of 3 engines
133. api ➞ CSSLayerBlockRule
     Backfilled for Firefox  ➞  3 of 3 engines
134. api ➞ CSSLayerBlockRule ➞ name
     Backfilled for Firefox  ➞  3 of 3 engines
135. api ➞ CSSLayerStatementRule
     Backfilled for Firefox  ➞  3 of 3 engines
136. api ➞ CSSLayerStatementRule ➞ nameList
     Backfilled for Firefox  ➞  3 of 3 engines
137. api ➞ CSSMathClamp ➞ CSSMathClamp
     Backfilled for Chrome  ➞  1 of 3 engines
138. api ➞ CSSMathClamp
     Backfilled for Chrome  ➞  1 of 3 engines
139. api ➞ CSSMathClamp ➞ lower
     Backfilled for Chrome  ➞  1 of 3 engines
140. api ➞ CSSMathClamp ➞ upper
     Backfilled for Chrome  ➞  1 of 3 engines
141. api ➞ CSSMathClamp ➞ value
     Backfilled for Chrome  ➞  1 of 3 engines
142. api ➞ CanvasFilter ➞ CanvasFilter
     Backfilled for Chrome  ➞  1 of 3 engines
143. api ➞ CanvasFilter
     Backfilled for Chrome  ➞  1 of 3 engines
144. api ➞ CanvasRenderingContext2D ➞ fontKerning
     Backfilled for Chrome  ➞  1 of 3 engines
145. api ➞ CanvasRenderingContext2D ➞ fontStretch
     Backfilled for Chrome  ➞  1 of 3 engines
146. api ➞ CanvasRenderingContext2D ➞ fontVariantCaps
     Backfilled for Chrome  ➞  1 of 3 engines
147. api ➞ CanvasRenderingContext2D ➞ isContextLost
     Backfilled for Chrome  ➞  1 of 3 engines
148. api ➞ CanvasRenderingContext2D ➞ letterSpacing
     Backfilled for Chrome  ➞  1 of 3 engines
149. api ➞ CanvasRenderingContext2D ➞ reset
     Backfilled for Chrome  ➞  1 of 3 engines
150. api ➞ CanvasRenderingContext2D ➞ roundRect
     Backfilled for Chrome  ➞  1 of 3 engines
151. api ➞ CanvasRenderingContext2D ➞ textRendering
     Backfilled for Chrome  ➞  1 of 3 engines
152. api ➞ CanvasRenderingContext2D ➞ wordSpacing
     Backfilled for Chrome  ➞  1 of 3 engines
153. api ➞ Element ➞ beforexrselect_event
     Backfilled for Chrome  ➞  1 of 3 engines
154. api ➞ ElementInternals ➞ ariaInvalid
     Backfilled for Chrome  ➞  1 of 3 engines
155. api ➞ ElementInternals ➞ role
     Backfilled for Chrome  ➞  1 of 3 engines
156. api ➞ EventCounts ➞ @@iterator
     Backfilled for Firefox  ➞  2 of 3 engines
157. api ➞ HTMLCanvasElement ➞ getContext ➞ 2d_context ➞ options_colorSpace_parameter
     Backfilled for Chrome  ➞  2 of 3 engines
158. api ➞ HTMLCanvasElement ➞ getContext ➞ 2d_context ➞ options_willReadFrequently_parameter
     Backfilled for Firefox  ➞  2 of 3 engines

CSS

1. css ➞ at-rules ➞ font-face ➞ size-adjust
   Backfilled for Firefox  ➞  2 of 3 engines
2. css ➞ at-rules ➞ layer
   Backfilled for Firefox  ➞  3 of 3 engines
3. css ➞ at-rules ➞ media ➞ forced-colors
   Backfilled for Firefox  ➞  2 of 3 engines
4. css ➞ at-rules ➞ media ➞ prefers-contrast
   Backfilled for Firefox  ➞  3 of 3 engines
5. css ➞ properties ➞ accent-color
   Backfilled for Firefox  ➞  3 of 3 engines
6. css ➞ properties ➞ aspect-ratio
   Backfilled for Firefox  ➞  3 of 3 engines
7. css ➞ properties ➞ backdrop-filter
   Backfilled for Firefox  ➞  3 of 3 engines
8. css ➞ properties ➞ border-block
   Backfilled for Chrome  ➞  3 of 3 engines
9. css ➞ properties ➞ border-block-color
   Backfilled for Chrome  ➞  3 of 3 engines
10. css ➞ properties ➞ border-block-style
    Backfilled for Chrome  ➞  3 of 3 engines
11. css ➞ properties ➞ border-block-width
    Backfilled for Chrome  ➞  3 of 3 engines
12. css ➞ properties ➞ border-inline
    Backfilled for Chrome  ➞  3 of 3 engines
13. css ➞ properties ➞ border-inline-color
    Backfilled for Chrome  ➞  3 of 3 engines
14. css ➞ properties ➞ border-inline-style
    Backfilled for Chrome  ➞  3 of 3 engines
15. css ➞ properties ➞ border-inline-width
    Backfilled for Chrome  ➞  3 of 3 engines
16. css ➞ properties ➞ contain
    Backfilled for Firefox  ➞  3 of 3 engines
17. css ➞ properties ➞ font-size-adjust ➞ two-values
    Backfilled for Firefox  ➞  1 of 3 engines
18. css ➞ properties ➞ forced-color-adjust
    Backfilled for Chrome  ➞  1 of 3 engines
19. css ➞ properties ➞ grid-template-columns ➞ subgrid
    Backfilled for Firefox  ➞  1 of 3 engines
20. css ➞ properties ➞ grid-template-rows ➞ subgrid
    Backfilled for Firefox  ➞  1 of 3 engines
21. css ➞ properties ➞ hyphenate-character
    Backfilled for Firefox  ➞  3 of 3 engines
22. css ➞ properties ➞ inset
    Backfilled for Chrome  ➞  3 of 3 engines
23. css ➞ properties ➞ inset-block
    Backfilled for Chrome  ➞  2 of 3 engines
24. css ➞ properties ➞ inset-block-end
    Backfilled for Chrome  ➞  2 of 3 engines
25. css ➞ properties ➞ inset-block-start
    Backfilled for Chrome  ➞  2 of 3 engines
26. css ➞ properties ➞ inset-inline
    Backfilled for Chrome  ➞  2 of 3 engines
27. css ➞ properties ➞ inset-inline-end
    Backfilled for Chrome  ➞  2 of 3 engines
28. css ➞ properties ➞ inset-inline-start
    Backfilled for Chrome  ➞  2 of 3 engines
29. css ➞ properties ➞ margin-block
    Backfilled for Chrome  ➞  3 of 3 engines
30. css ➞ properties ➞ margin-block-end
    Backfilled for Chrome  ➞  3 of 3 engines
31. css ➞ properties ➞ margin-block-start
    Backfilled for Chrome  ➞  3 of 3 engines
32. css ➞ properties ➞ margin-inline
    Backfilled for Chrome  ➞  3 of 3 engines
33. css ➞ properties ➞ offset
    Backfilled for Firefox  ➞  2 of 3 engines
34. css ➞ properties ➞ offset-anchor
    Backfilled for Firefox  ➞  1 of 3 engines
35. css ➞ properties ➞ offset-distance
    Backfilled for Firefox  ➞  1 of 3 engines
36. css ➞ properties ➞ offset-rotate
    Backfilled for Firefox  ➞  1 of 3 engines
37. css ➞ properties ➞ padding-block
    Backfilled for Chrome  ➞  3 of 3 engines
38. css ➞ properties ➞ padding-block-end
    Backfilled for Chrome  ➞  3 of 3 engines
39. css ➞ properties ➞ padding-block-start
    Backfilled for Chrome  ➞  3 of 3 engines
40. css ➞ properties ➞ padding-inline
    Backfilled for Chrome  ➞  3 of 3 engines
41. css ➞ properties ➞ scroll-behavior
    Backfilled for Safari  ➞  3 of 3 engines
42. css ➞ properties ➞ scrollbar-gutter
    Backfilled for Chrome  ➞  2 of 3 engines
43. css ➞ properties ➞ text-decoration-thickness
    Backfilled for Firefox  ➞  2 of 3 engines
44. css ➞ properties ➞ text-underline-offset
    Backfilled for Firefox  ➞  3 of 3 engines
45. css ➞ selectors ➞ focus-visible
    Backfilled for Chrome  ➞  2 of 3 engines
46. css ➞ selectors ➞ link ➞ not_match_link
    Backfilled for Safari  ➞  3 of 3 engines
47. css ➞ selectors ➞ marker
    Backfilled for Chrome  ➞  2 of 3 engines
48. css ➞ selectors ➞ marker ➞ animation_and_transition_support
    Backfilled for Chrome  ➞  2 of 3 engines
49. css ➞ selectors ➞ part
    Backfilled for Firefox  ➞  3 of 3 engines
50. css ➞ selectors ➞ visited ➞ not_match_link
    Backfilled for Safari  ➞  3 of 3 engines
51. css ➞ selectors ➞ where
    Backfilled for Firefox  ➞  3 of 3 engines
52. css ➞ types ➞ cos
    Backfilled for Firefox  ➞  2 of 3 engines
53. css ➞ types ➞ image ➞ gradient ➞ conic-gradient
    Backfilled for Firefox  ➞  3 of 3 engines
54. css ➞ types ➞ image ➞ gradient ➞ repeating-conic-gradient
    Backfilled for Firefox  ➞  3 of 3 engines
55. css ➞ types ➞ sin
    Backfilled for Firefox  ➞  2 of 3 engines
56. css ➞ types ➞ tan
    Backfilled for Firefox  ➞  2 of 3 engines
57. css ➞ properties ➞ animation-composition
    Backfilled for Firefox  ➞  1 of 3 engines
58. css ➞ properties ➞ break-after ➞ paged_context ➞ avoid-page
    Backfilled for Chrome  ➞  2 of 3 engines
59. css ➞ properties ➞ contain ➞ inline-size
    Backfilled for Firefox  ➞  3 of 3 engines
60. css ➞ properties ➞ contain ➞ style
    Backfilled for Firefox  ➞  3 of 3 engines

HTML

1. html ➞ elements ➞ dialog
   Backfilled for Firefox  ➞  3 of 3 engines
2. html ➞ elements ➞ dialog ➞ open
   Backfilled for Firefox  ➞  3 of 3 engines
3. html ➞ elements ➞ img ➞ aspect_ratio_computed_from_attributes
   Backfilled for Firefox  ➞  2 of 3 engines
4. html ➞ elements ➞ video ➞ aspect_ratio_computed_from_attributes
   Backfilled for Firefox  ➞  3 of 3 engines
5. html ➞ global_attributes ➞ enterkeyhint
   Backfilled for Firefox  ➞  3 of 3 engines
6. html ➞ global_attributes ➞ part
   Backfilled for Firefox  ➞  3 of 3 engines

HTTP

1. http ➞ headers ➞ Content-Security-Policy ➞ trusted-types
   Backfilled for Chrome  ➞  1 of 3 engines
2. http ➞ headers ➞ Cross-Origin-Resource-Policy
   Backfilled for Firefox  ➞  3 of 3 engines
3. http ➞ headers ➞ Set-Cookie ➞ SameSite ➞ schemeful
   Backfilled for Chrome  ➞  2 of 3 engines

JAVASCRIPT

1. javascript ➞ builtins ➞ Array ➞ findLast
   Backfilled for Firefox  ➞  3 of 3 engines
2. javascript ➞ builtins ➞ Array ➞ findLastIndex
   Backfilled for Firefox  ➞  3 of 3 engines
3. javascript ➞ builtins ➞ Intl ➞ Locale ➞ calendars
   Backfilled for Chrome  ➞  2 of 3 engines
4. javascript ➞ builtins ➞ Intl ➞ Locale ➞ hourCycles
   Backfilled for Chrome  ➞  2 of 3 engines
5. javascript ➞ builtins ➞ Intl ➞ Locale ➞ numberingSystems
   Backfilled for Chrome  ➞  2 of 3 engines
6. javascript ➞ builtins ➞ Intl ➞ Locale ➞ textInfo
   Backfilled for Chrome  ➞  2 of 3 engines
7. javascript ➞ builtins ➞ Intl ➞ Locale ➞ timeZones
   Backfilled for Chrome  ➞  2 of 3 engines
8. javascript ➞ builtins ➞ Intl ➞ Locale ➞ weekInfo
   Backfilled for Chrome  ➞  2 of 3 engines
9. javascript ➞ builtins ➞ Intl ➞ supportedValuesOf
   Backfilled for Chrome  ➞  3 of 3 engines
10. javascript ➞ builtins ➞ TypedArray ➞ findLast
    Backfilled for Firefox  ➞  3 of 3 engines
11. javascript ➞ builtins ➞ TypedArray ➞ findLastIndex
    Backfilled for Firefox  ➞  3 of 3 engines
12. javascript ➞ builtins ➞ WebAssembly ➞ Exception ➞ Exception
    Backfilled for Firefox  ➞  3 of 3 engines
13. javascript ➞ builtins ➞ WebAssembly ➞ Exception ➞ Exception ➞ options_parameter_traceStack
    Backfilled for Firefox  ➞  3 of 3 engines
14. javascript ➞ builtins ➞ WebAssembly ➞ Exception
    Backfilled for Firefox  ➞  3 of 3 engines
15. javascript ➞ builtins ➞ WebAssembly ➞ Exception ➞ getArg
    Backfilled for Firefox  ➞  3 of 3 engines
16. javascript ➞ builtins ➞ WebAssembly ➞ Exception ➞ is
    Backfilled for Firefox  ➞  3 of 3 engines
17. javascript ➞ builtins ➞ WebAssembly ➞ Exception ➞ stack
    Backfilled for Firefox  ➞  3 of 3 engines
18. javascript ➞ builtins ➞ WebAssembly ➞ Tag ➞ Tag
    Backfilled for Firefox  ➞  3 of 3 engines
19. javascript ➞ builtins ➞ WebAssembly ➞ Tag
    Backfilled for Firefox  ➞  3 of 3 engines
20. javascript ➞ builtins ➞ WebAssembly ➞ Tag ➞ type
    Backfilled for Firefox  ➞  3 of 3 engines
21. javascript ➞ operators ➞ import
    Backfilled for Firefox  ➞  3 of 3 engines
22. javascript ➞ operators ➞ optional_chaining
    Backfilled for Chrome  ➞  3 of 3 engines
23. javascript ➞ statements ➞ import ➞ worker_support
    Backfilled for Chrome  ➞  2 of 3 engines

SVG

1. svg ➞ elements ➞ path ➞ d ➞ path
   Backfilled for Firefox  ➞  2 of 3 engines

WEBEXTENSIONS

1. webextensions ➞ api ➞ userScripts ➞ RegisteredUserScript
   Backfilled for Firefox  ➞  1 of 3 engines
2. webextensions ➞ api ➞ userScripts ➞ RegisteredUserScript ➞ unregister
   Backfilled for Firefox  ➞  1 of 3 engines
3. webextensions ➞ api ➞ userScripts ➞ onBeforeScript
   Backfilled for Firefox  ➞  1 of 3 engines
4. webextensions ➞ api ➞ userScripts ➞ register
   Backfilled for Firefox  ➞  1 of 3 engines
5. webextensions ➞ manifest ➞ action
   Backfilled for Safari  ➞  3 of 3 engines
6. webextensions ➞ manifest ➞ action ➞ default_icon
   Backfilled for Safari  ➞  3 of 3 engines
7. webextensions ➞ manifest ➞ action ➞ default_popup
   Backfilled for Safari  ➞  3 of 3 engines
8. webextensions ➞ manifest ➞ action ➞ default_title
   Backfilled for Safari  ➞  3 of 3 engines
9. webextensions ➞ manifest ➞ content_security_policy ➞ extension_pages
   Backfilled for Safari  ➞  3 of 3 engines
10. webextensions ➞ manifest ➞ manifest_version ➞ v3
    Backfilled for Safari  ➞  2 of 3 engines
11. webextensions ➞ manifest ➞ optional_permissions ➞ nativeMessaging
    Backfilled for Safari  ➞  2 of 3 engines
12. webextensions ➞ manifest ➞ storage
    Backfilled for Safari  ➞  2 of 3 engines
13. webextensions ➞ manifest ➞ web_accessible_resources ➞ matches
    Backfilled for Safari  ➞  3 of 3 engines
14. webextensions ➞ manifest ➞ web_accessible_resources ➞ resources
    Backfilled for Safari  ➞  3 of 3 engines