Performance class

Provides access to performance-related information for the current page. It's part of the High Resolution Time API, but is enhanced by the Performance Timeline API, the Navigation Timing API, the User Timing API, and the Resource Timing API.

MDN Reference

Implemented types
Available extensions
Annotations
  • @JS()
  • @staticInterop

Constructors

Performance()
factory

Properties

addEventListener ↔ void Function(String, [Object?, Object?])

Available on EventTarget, provided by the EventTarget$Typings extension

getter/setter pair
addEventListener → ({void Function<K$>(PerformanceEventMap<K$> type, dynamic listener(K$), [Object? options]) $1, void Function(String type, Object listener, [Object? options]) $2})

Available on Performance, provided by the Performance$Typings extension

Overload accessor: $1, $2
no setter
clearMarks ↔ void Function([String?])

Available on Performance, provided by the Performance$Typings extension

getter/setter pair
clearMeasures ↔ void Function([String?])

Available on Performance, provided by the Performance$Typings extension

getter/setter pair
clearResourceTimings ↔ void Function()

Available on Performance, provided by the Performance$Typings extension

getter/setter pair
dispatchEvent ↔ bool Function(Event)

Available on EventTarget, provided by the EventTarget$Typings extension

getter/setter pair
eventCounts → EventCounts

Available on Performance, provided by the Performance$Typings extension

MDN Reference
no setter
getEntries ↔ List Function()

Available on Performance, provided by the Performance$Typings extension

getter/setter pair
getEntriesByName ↔ List Function(String, [String?])

Available on Performance, provided by the Performance$Typings extension

getter/setter pair
getEntriesByType ↔ List Function(String)

Available on Performance, provided by the Performance$Typings extension

getter/setter pair
hashCode → int
The hash code for this object.
no setterinherited
mark ↔ PerformanceMark Function(String, [PerformanceMarkOptions?])

Available on Performance, provided by the Performance$Typings extension

getter/setter pair
measure ↔ PerformanceMeasure Function(String, [Object?, String?])

Available on Performance, provided by the Performance$Typings extension

getter/setter pair

Available on Performance, provided by the Performance$Typings extension

no setter
now ↔ num Function()

Available on Performance, provided by the Performance$Typings extension

getter/setter pair
onresourcetimingbufferfull ↔ dynamic Function(Event)?

Available on Performance, provided by the Performance$Typings extension

MDN Reference
getter/setter pair
removeEventListener ↔ void Function(String, [Object?, Object?])

Available on EventTarget, provided by the EventTarget$Typings extension

getter/setter pair
removeEventListener → ({void Function<K$>(PerformanceEventMap<K$> type, dynamic listener(K$), [Object? options]) $1, void Function(String type, Object listener, [Object? options]) $2})

Available on Performance, provided by the Performance$Typings extension

Overload accessor: $1, $2
no setter
runtimeType → Type
A representation of the runtime type of the object.
no setterinherited
setResourceTimingBufferSize ↔ void Function(num)

Available on Performance, provided by the Performance$Typings extension

getter/setter pair
timeOrigin → num

Available on Performance, provided by the Performance$Typings extension

MDN Reference
no setter
timing → PerformanceTiming

Available on Performance, provided by the Performance$Typings extension

no setter
toJSON ↔ dynamic Function()

Available on Performance, provided by the Performance$Typings extension

getter/setter pair

Methods

noSuchMethod(Invocation invocation) → dynamic
Invoked when a nonexistent method or property is accessed.
inherited
toString() → String
A string representation of this object.
inherited

Operators

operator ==(Object other) → bool
The equality operator.
inherited