WebIDLpedia

Definition

High Resolution Time defines Performance

[Exposed=(Window,Worker)]
interface Performance : EventTarget {
    DOMHighResTimeStamp now();
    readonly attribute DOMHighResTimeStamp timeOrigin;
    [Default] object toJSON();
};

This interface is extended in the following specifications:

• Measure Memory API

  
  
  partial interface Performance {
    [Exposed=(Window,ServiceWorker,SharedWorker), CrossOriginIsolated] Promise<MemoryMeasurement> measureUserAgentSpecificMemory();
  };

• Event Timing API

  
  
  [Exposed=Window]
  partial interface Performance {
      [SameObject] readonly attribute EventCounts eventCounts;
      readonly attribute unsigned long long interactionCount;
  };

• Navigation Timing Level 2

  
  
  [Exposed=Window]
  partial interface Performance {
    [SameObject]
    readonly attribute PerformanceTiming timing;
    [SameObject]
    readonly attribute PerformanceNavigation navigation;
  };

• Performance Timeline

  partial interface Performance {
    PerformanceEntryList getEntries ();
    PerformanceEntryList getEntriesByType (DOMString type);
    PerformanceEntryList getEntriesByName (DOMString name, optional DOMString type);
  };

• Resource Timing

  
  
  partial interface Performance {
    undefined clearResourceTimings ();
    undefined setResourceTimingBufferSize (unsigned long maxSize);
    attribute EventHandler onresourcetimingbufferfull;
  };

• User Timing

  
  
  partial interface Performance {
      PerformanceMark mark(DOMString markName, optional PerformanceMarkOptions markOptions = {});
      undefined clearMarks(optional DOMString markName);
      PerformanceMeasure measure(DOMString measureName, optional (DOMString or PerformanceMeasureOptions) startOrMeasureOptions = {}, optional DOMString endMark);
      undefined clearMeasures(optional DOMString measureName);
  };

[Exposed=(Window,Worker)]
interface Performance : EventTarget {
    DOMHighResTimeStamp now();
    readonly attribute DOMHighResTimeStamp timeOrigin;
    [Default] object toJSON();
  [Exposed=(Window,ServiceWorker,SharedWorker), CrossOriginIsolated] Promise<MemoryMeasurement> measureUserAgentSpecificMemory();
    [SameObject] readonly attribute EventCounts eventCounts;
    readonly attribute unsigned long long interactionCount;
  [SameObject]
  readonly attribute PerformanceTiming timing;
  [SameObject]
  readonly attribute PerformanceNavigation navigation;
  PerformanceEntryList getEntries ();
  PerformanceEntryList getEntriesByType (DOMString type);
  PerformanceEntryList getEntriesByName (DOMString name, optional DOMString type);
  undefined clearResourceTimings ();
  undefined setResourceTimingBufferSize (unsigned long maxSize);
  attribute EventHandler onresourcetimingbufferfull;
    PerformanceMark mark(DOMString markName, optional PerformanceMarkOptions markOptions = {});
    undefined clearMarks(optional DOMString markName);
    PerformanceMeasure measure(DOMString measureName, optional (DOMString or PerformanceMeasureOptions) startOrMeasureOptions = {}, optional DOMString endMark);
    undefined clearMeasures(optional DOMString measureName);
};

Methods and attributes that return objects implementing Performance

• WindowOrWorkerGlobalScope.performance

Referring IDL interfaces/dictionaries

• WindowOrWorkerGlobalScope

Referring specifications

• Measure Memory API refers to Performance
• Event Timing API refers to Performance
• Navigation Timing Level 2 refers to Performance
• Performance Timeline refers to Performance
• Resource Timing refers to Performance
• User Timing refers to Performance