Package-level declarations
Types
The Performance
interface provides access to performance-related information for the current page.
The PerformanceEntry
object encapsulates a single performance metric that is part of the browser's performance timeline.
The PerformanceEventTiming
interface of the Event Timing API provides insights into the latency of certain event types triggered by user interaction.
PerformanceMark
is an interface for PerformanceEntry objects with an PerformanceEntry.entryType of 'mark'
.
PerformanceMeasure
is an abstract interface for PerformanceEntry objects with an PerformanceEntry.entryType of 'measure'
.
The PerformanceNavigationTiming
interface provides methods and properties to store and retrieve metrics regarding the browser's document navigation events.
The PerformanceObserver
interface is used to observe performance measurement events and be notified of new PerformanceEntry as they are recorded in the browser's performance timeline.
The PerformanceObserverEntryList
interface is a list of PerformanceEntry that were explicitly observed via the PerformanceObserver.observe method.
The PerformancePaintTiming
interface provides timing information about 'paint' (also called 'render') operations during web page construction.
The PerformanceResourceTiming
interface enables retrieval and analysis of detailed network timing data regarding the loading of an application's resources.
The PerformanceServerTiming
interface surfaces server metrics that are sent with the response in the Server-Timing HTTP header.