WPT
wpt / css / selectors / is-where-basic.html
Spec: Selectors ↗
Runs: Chrome 155.0.8038.0 (wpt@b1a7025f8, 2026-09-02) | Firefox 157.0a1 (wpt@b1a7025f8, 2026-09-02) | Safari 251 preview (wpt@5ce815a83, 2026-08-27) | Ladybird 1.0-a7884 (wpt@b1a7025f8, 2026-09-02) | Servo Servo 0.5 (wpt@2ccd2cbf8, 2026-09-01) | Blitz 7727414ca (wpt@a95401e4e, 2026-09-02)
View on the Blitz WPT dashboard | Open test on wpt.live | wpt.fyi
| Chrome | Firefox | Safari | Ladybird | Servo | Blitz | |
|---|---|---|---|---|---|---|
| Total | 15/15 | 15/15 | 15/15 | 14/15 | 15/15 | 15/15 |
| Subtest | Chrome | Firefox | Safari | Ladybird | Servo | Blitz |
|---|---|---|---|---|---|---|
| :is() matches expected elements | PASS | PASS | PASS | FAIL | PASS | PASS |
| :is(#a) matches expected elements | PASS | PASS | PASS | PASS | PASS | PASS |
| :is(#a, #f) matches expected elements | PASS | PASS | PASS | PASS | PASS | PASS |
| :is(#a, #c) :where(#a #d, #c #f) matches expected elements | PASS | PASS | PASS | PASS | PASS | PASS |
| #c > :is(#c > #f) matches expected elements | PASS | PASS | PASS | PASS | PASS | PASS |
| #c > :is(#b > #f) matches expected elements | PASS | PASS | PASS | PASS | PASS | PASS |
| #a div:is(#d) matches expected elements | PASS | PASS | PASS | PASS | PASS | PASS |
| :is(div) > div matches expected elements | PASS | PASS | PASS | PASS | PASS | PASS |
| :is(*) > div matches expected elements | PASS | PASS | PASS | PASS | PASS | PASS |
| :is(*) div matches expected elements | PASS | PASS | PASS | PASS | PASS | PASS |
| div > :where(#e, #f) matches expected elements | PASS | PASS | PASS | PASS | PASS | PASS |
| div > :where(*) matches expected elements | PASS | PASS | PASS | PASS | PASS | PASS |
| :is(*) > :where(*) matches expected elements | PASS | PASS | PASS | PASS | PASS | PASS |
| :is(#a + #b) + :is(#c) matches expected elements | PASS | PASS | PASS | PASS | PASS | PASS |
| :is(#a, #b) + div matches expected elements | PASS | PASS | PASS | PASS | PASS | PASS |