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.
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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 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).
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. |
Editor's Draft | |
User Timing The definition of 'PerformanceMeasure' in that specification. |
Recommendation | Basic definition. |
Browser compatibility
Feature | Chrome | Edge | Firefox (Gecko) | Internet Explorer | Opera | Safari (WebKit) |
---|---|---|---|---|---|---|
Basic support. | 43 | (Yes) | 41 | 10 | 33 | No support |
Feature | Android | Edge | Firefox Mobile (Gecko) | Firefox OS | IE Phone | Opera Mobile | Safari Mobile |
---|---|---|---|---|---|---|---|
Basic support. | 46 | (Yes) | 42 | 42 | 10 | 33 | No support |