WPT
wpt / webstorage / event_no_duplicates.html
Spec: https://html.spec.whatwg.org/multipage/webstorage.html ↗
Runs: Chrome 155.0.8038.0 (wpt@05fffeacb, 2026-09-02) | Firefox 157.0a1 (wpt@7addae031, 2026-09-02) | Safari 251 preview (wpt@5ce815a83, 2026-08-27) | Ladybird 1.0-410b4 (wpt@ce41a9c47, 2026-09-02) | 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 | 8/8 | 8/8 | 8/8 | 8/8 | 8/8 | NOT RUN |
| Subtest | Chrome | Firefox | Safari | Ladybird | Servo | Blitz |
|---|---|---|---|---|---|---|
| sessionStorage exists | PASS | PASS | PASS | PASS | PASS | — |
| Setting to same value does not trigger event for sessionStorage | PASS | PASS | PASS | PASS | PASS | — |
| Deleting non-existent key does not trigger event for sessionStorage | PASS | PASS | PASS | PASS | PASS | — |
| Clearing empty storage does not trigger event for sessionStorage | PASS | PASS | PASS | PASS | PASS | — |
| localStorage exists | PASS | PASS | PASS | PASS | PASS | — |
| Setting to same value does not trigger event for localStorage | PASS | PASS | PASS | PASS | PASS | — |
| Deleting non-existent key does not trigger event for localStorage | PASS | PASS | PASS | PASS | PASS | — |
| Clearing empty storage does not trigger event for localStorage | PASS | PASS | PASS | PASS | PASS | — |