Coverage / user-timing

User Timing

Specification: w3c.github.io/user-timing/. 2 interfaces defined here, 6 members exposed on Window (Web IDL). Group: Test DOM core.

Existence only: “present” means the name is defined where Web IDL puts it, not that it behaves as the standard says. The featured checks test behavior.

Probed 2026-10-19. Data: idl.json (CC BY 4.0).