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
timestampgiven to the measure whenperformance.measure()was called. PerformanceEntry.duration- Returns a
DOMHighResTimeStampthat 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
We're converting our compatibility data into a machine-readable JSON format. This compatibility table still uses the old format, because we haven't yet converted the data it contains. Find out how you can help!
| 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 |