WPT
wpt / intersection-observer / root-margin-root-element.html
Spec: Intersection Observer ↗
Runs: Chrome 155.0.8039.0 (wpt@6ec9fd59f, 2026-09-03) | Firefox 157.0a1 (wpt@6ec9fd59f, 2026-09-03) | Safari 251 preview (wpt@5ce815a83, 2026-08-27) | Ladybird 1.0-795e1 (wpt@7e3d005d7, 2026-09-03) | Servo Servo 0.6 (wpt@09159dcb3, 2026-09-02) | Blitz 188486089 (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 | 7/7 | 7/7 | 7/7 | 3/7 | 7/7 | NOT RUN |
| Subtest | Chrome | Firefox | Safari | Ladybird | Servo | Blitz |
|---|---|---|---|---|---|---|
| Root margin with explicit root. | PASS | PASS | PASS | PASS | PASS | — |
| First rAF | PASS | PASS | PASS | FAIL | PASS | — |
| document.scrollingElement.scrollTop = window.innerHeight. | PASS | PASS | PASS | PASS | PASS | — |
| root.scrollTop = 50, putting target into root margin | PASS | PASS | PASS | FAIL | PASS | — |
| document.scrollingElement.scrollTop = 0. | PASS | PASS | PASS | PASS | PASS | — |
| root.scrollTop = 0 | PASS | PASS | PASS | FAIL | PASS | — |
| root.scrollTop = 50 with root scrolled out of view. | PASS | PASS | PASS | FAIL | PASS | — |