PerformanceObserver class

The interface is used to observe performance measurement events and be notified of new performance entries as they are recorded in the browser's performance timeline. Note: This feature is available in Web Workers

Available extensions

• PropsPerformanceObserver

Annotations

• @JS()
• @staticInterop

Constructors

PerformanceObserver(PerformanceObserverCallback callback)

factory

Properties

hashCode → int

The hash code for this object.

no setter, inherited

runtimeType → Type

A representation of the runtime type of the object.

no setter, inherited

Methods

disconnect() → void

Available on PerformanceObserver, provided by the PropsPerformanceObserver extension

noSuchMethod(Invocation invocation) → dynamic

Invoked when a nonexistent method or property is accessed.

inherited

observe([PerformanceObserverInit? options]) → void

Available on PerformanceObserver, provided by the PropsPerformanceObserver extension

takeRecords() → Iterable<PerformanceEntry>

Available on PerformanceObserver, provided by the PropsPerformanceObserver extension

toString() → String

A string representation of this object.

inherited

Operators

operator ==(Object other) → bool

The equality operator.

inherited