WPT
wpt / user-timing / mark_exceptions.html
Spec: User Timing ↗
Runs: Chrome 155.0.8039.0 (wpt@a4fcd77aa, 2026-09-03) | Firefox 157.0a1 (wpt@cc4d45aa0, 2026-09-03) | Safari 251 preview (wpt@5ce815a83, 2026-08-27) | Ladybird 1.0-a9df8 (wpt@9b4cabf6d, 2026-09-03) | Servo Servo 0.6 (wpt@7e3d005d7, 2026-09-03) | 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 | 22/22 | 22/22 | 22/22 | 1/22 | 22/22 | NOT RUN |
| Subtest | Chrome | Firefox | Safari | Ladybird | Servo | Blitz |
|---|---|---|---|---|---|---|
| window.performance.mark() throws a TypeError exception. | PASS | PASS | PASS | PASS | PASS | — |
| window.performance.mark("navigationStart") throws a SyntaxError exception. | PASS | PASS | PASS | FAIL | PASS | — |
| window.performance.mark("unloadEventStart") throws a SyntaxError exception. | PASS | PASS | PASS | FAIL | PASS | — |
| window.performance.mark("unloadEventEnd") throws a SyntaxError exception. | PASS | PASS | PASS | FAIL | PASS | — |
| window.performance.mark("redirectStart") throws a SyntaxError exception. | PASS | PASS | PASS | FAIL | PASS | — |
| window.performance.mark("redirectEnd") throws a SyntaxError exception. | PASS | PASS | PASS | FAIL | PASS | — |
| window.performance.mark("fetchStart") throws a SyntaxError exception. | PASS | PASS | PASS | FAIL | PASS | — |
| window.performance.mark("domainLookupStart") throws a SyntaxError exception. | PASS | PASS | PASS | FAIL | PASS | — |
| window.performance.mark("domainLookupEnd") throws a SyntaxError exception. | PASS | PASS | PASS | FAIL | PASS | — |
| window.performance.mark("connectStart") throws a SyntaxError exception. | PASS | PASS | PASS | FAIL | PASS | — |
| window.performance.mark("connectEnd") throws a SyntaxError exception. | PASS | PASS | PASS | FAIL | PASS | — |
| window.performance.mark("secureConnectionStart") throws a SyntaxError exception. | PASS | PASS | PASS | FAIL | PASS | — |
| window.performance.mark("requestStart") throws a SyntaxError exception. | PASS | PASS | PASS | FAIL | PASS | — |
| window.performance.mark("responseStart") throws a SyntaxError exception. | PASS | PASS | PASS | FAIL | PASS | — |
| window.performance.mark("responseEnd") throws a SyntaxError exception. | PASS | PASS | PASS | FAIL | PASS | — |
| window.performance.mark("domLoading") throws a SyntaxError exception. | PASS | PASS | PASS | FAIL | PASS | — |
| window.performance.mark("domInteractive") throws a SyntaxError exception. | PASS | PASS | PASS | FAIL | PASS | — |
| window.performance.mark("domContentLoadedEventStart") throws a SyntaxError exception. | PASS | PASS | PASS | FAIL | PASS | — |
| window.performance.mark("domContentLoadedEventEnd") throws a SyntaxError exception. | PASS | PASS | PASS | FAIL | PASS | — |
| window.performance.mark("domComplete") throws a SyntaxError exception. | PASS | PASS | PASS | FAIL | PASS | — |
| window.performance.mark("loadEventStart") throws a SyntaxError exception. | PASS | PASS | PASS | FAIL | PASS | — |
| window.performance.mark("loadEventEnd") throws a SyntaxError exception. | PASS | PASS | PASS | FAIL | PASS | — |