PerformanceMeasure is an abstract interface for
PerformanceEntry objects with an
entryType of "
measure". Entries of this type are created by calling
performance.measure() to add a named
DOMHighResTimeStamp (the measure) between two marks to the browser's performance timeline.
This interface defines:
Contains arbitrary metadata about the measure.
In addition, it extends the following
PerformanceEntry properties by qualifying/constraining the properties as follows:
Returns the name given to the measure when it was created via a call to
timestamp given to the measure when
performance.measure() was called.
DOMHighResTimeStamp that is the duration of the measure (typically, the measure's end mark timestamp minus its start mark timestamp).
This interface has no methods.