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.

Properties

This interface has no properties but it extends the following PerformanceEntry properties by qualifying/constrainting 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 when performance.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).

Methods

This interface has no methods.

Example

See the example in Using the User Timing API.

Specifications

Specification Status Comment
User Timing Level 2
The definition of 'PerformanceMeasure' in that specification.
Working Draft
User Timing
The definition of 'PerformanceMeasure' in that specification.
Recommendation Basic definition.

Browser compatibility

BCD tables only load in the browser

See also