📃 October 2021 release notes
Newly available
The following features are newly available:
-
image-rendering:
The
image-renderingCSS property sets how images are scaled, retaining smoothness for photos, or hard edges for pixel art and QR codes. -
Navigation timing:
The
navigationperformance entry and thePerformanceNavigationTimingAPI measures navigation events, such as loading time or the number of redirects. -
Bulk memory operations (WebAssembly):
Bulk memory operations, such as
copyandinit, mirror the efficiency of nativememcpyandmemmoveoperations. - Non-trapping float-to-int conversion (WebAssembly): Saturating floating-point to integer conversion operators return the maximum or minimum integer value on overflow instead of trapping.
New in Chrome
The following features are now available in Chrome:
-
URLPattern:
The
URLPatternAPI creates patterns that can be matched against URLs or URL components. - Exception handling (WebAssembly): Exceptions break the normal control flow of execution to represent exceptional behavior, such as an error. You can respond to the exception in JavaScript code.
New in Chrome Android
The following features are now available in Chrome Android:
-
URLPattern:
The
URLPatternAPI creates patterns that can be matched against URLs or URL components. - Exception handling (WebAssembly): Exceptions break the normal control flow of execution to represent exceptional behavior, such as an error. You can respond to the exception in JavaScript code.
New in Edge
The following features are now available in Edge:
-
URLPattern:
The
URLPatternAPI creates patterns that can be matched against URLs or URL components. - Exception handling (WebAssembly): Exceptions break the normal control flow of execution to represent exceptional behavior, such as an error. You can respond to the exception in JavaScript code.
New in Firefox
The following features are now available in Firefox:
- AVIF: AVIF (AV1 Image File Format) is an image format based on the AV1 video format.
-
image-rendering: smooth:
The
image-rendering: smoothCSS declaration scales images while retaining a gradual color blending that is useful for photos.
New in Firefox for Android
The following features are now available in Firefox for Android:
- AVIF: AVIF (AV1 Image File Format) is an image format based on the AV1 video format.
-
image-rendering: smooth:
The
image-rendering: smoothCSS declaration scales images while retaining a gradual color blending that is useful for photos.
New in Safari
The following features are now available in Safari:
-
Reference types (WebAssembly):
The
externreftype can be both a value type and a table element type, whilefuncrefcan be a value type.
New in Safari on iOS
The following features are now available in Safari on iOS:
-
Reference types (WebAssembly):
The
externreftype can be both a value type and a table element type, whilefuncrefcan be a value type.