PerformanceMeasure
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.
Note: This feature is available in Web Workers
Instance properties
This interface defines:
PerformanceMeasure.detail
-
Contains arbitrary metadata about the measure.
In addition, it extends the following PerformanceEntry
properties by qualifying/constraining the properties as follows:
PerformanceEntry.entryType
-
Returns "
measure
". PerformanceEntry.name
-
Returns the name given to the measure when it was created via a call to
performance.measure()
. PerformanceEntry.startTime
-
Returns a
timestamp
given to the measure whenperformance.measure()
was called. PerformanceEntry.duration
-
Returns a
DOMHighResTimeStamp
that is the duration of the measure (typically, the measure's end mark timestamp minus its start mark timestamp).
Instance methods
This interface has no methods.
Example
See the example in Using the User Timing API.
Specifications
Specification |
---|
User Timing # performancemeasure |
Browser compatibility
BCD tables only load in the browser