typedef double DOMHighResTimeStamp; | |
[Exposed=(Window,Worker)] | |
interface Performance : EventTarget { | |
DOMHighResTimeStamp now(); | |
readonly attribute DOMHighResTimeStamp timeOrigin; | |
[Default] object toJSON(); | |
}; | |
partial interface WindowOrWorkerGlobalScope { | |
[Replaceable] | |
readonly attribute Performance performance; | |
}; |