| Summary: | CSS.supports is incorrect for 'scroll-snap-type' | ||
|---|---|---|---|
| Product: | WebKit | Reporter: | Majid Valipour <majidvp> |
| Component: | CSS | Assignee: | Nobody <webkit-unassigned> |
| Status: | RESOLVED DUPLICATE | ||
| Severity: | Normal | CC: | mrobinson, wenson_hsieh |
| Priority: | P2 | ||
| Version: | Safari 11 | ||
| Hardware: | Unspecified | ||
| OS: | Unspecified | ||
*** This bug has been marked as a duplicate of bug 210468 *** |
`CSS.supports('scroll-snap-type: mandatory')` returns true but it should be false. CSS Scroll Snap [1] which is supported by Safari require 'scroll-snap-type' to have the following syntax value. none | [ x | y | block | inline | both ] [ mandatory | proximity ]? So the above should return 'false'. This is particularly problematic since the buggy syntax maps to the deprecated css-snap-points spec so it can cause confusion if someone tries to use it for feature detection between old and new specification. [1] https://drafts.csswg.org/css-scroll-snap/#scroll-snap-type