PerformanceMeasure is anabstract interface forPerformanceEntry objects with anentryType of"measure". Entries of this type are created by callingperformance.measure() to add anamedDOMHighResTimeStamp (themeasure) between twomarks to the browser'sperformance timeline.

Instance properties

This interface defines:

PerformanceMeasure.detail

Contains arbitrary metadata about the measure.

In addition, it extends the followingPerformanceEntry 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 toperformance.measure().

PerformanceEntry.startTime

Returns atimestamp given to the measure whenperformance.measure() was called.

PerformanceEntry.duration

Returns aDOMHighResTimeStamp 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 inUsing the User Timing API.

Specifications

Browser compatibility

See also

• User Timing (Overview)
• Using the User Timing API