PerformanceNavigationTiming extension type

The PerformanceNavigationTiming interface provides methods and properties to store and retrieve metrics regarding the browser's document navigation events. For example, this interface can be used to determine how much time it takes to load or unload a document.

Only the current document is included in the performance timeline, so there is only one PerformanceNavigationTiming object in the performance timeline. It inherits all of the properties and methods of PerformanceResourceTiming and PerformanceEntry.

The following diagram shows all of the timestamp properties defined in PerformanceNavigationTiming.

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API documentation sourced from MDN Web Docs.

on

• JSObject

Implemented types

• PerformanceResourceTiming
• JSObject

Available extensions

• JSAnyOperatorExtension
• JSAnyUtilityExtension
• JSObjectUnsafeUtilExtension
• NullableUndefineableJSAnyExtension

Properties

connectEnd → double

The connectEnd read-only property returns the DOMHighResTimeStamp immediately after the browser finishes establishing the connection to the server to retrieve the resource. The timestamp value includes the time interval to establish the transport connection, as well as other time intervals such as TLS handshake and SOCKS authentication.

no setter, inherited

connectStart → double

The connectStart read-only property returns the DOMHighResTimeStamp immediately before the user agent starts establishing the connection to the server to retrieve the resource.

no setter, inherited

decodedBodySize → int

The decodedBodySize read-only property returns the size (in octets) received from the fetch (HTTP or cache) of the message body after removing any applied content encoding (like gzip or Brotli). If the resource is retrieved from an application cache or local resources, it returns the size of the payload after removing any applied content encoding.

no setter, inherited

domainLookupEnd → double

The domainLookupEnd read-only property returns the DOMHighResTimeStamp immediately after the browser finishes the domain-name lookup for the resource.

no setter, inherited

domainLookupStart → double

The domainLookupStart read-only property returns the DOMHighResTimeStamp immediately before the browser starts the domain name lookup for the resource.

no setter, inherited

domComplete → double

The domComplete read-only property returns a DOMHighResTimeStamp representing the time immediately before the user agent sets the document's readyState to "complete".

no setter

domContentLoadedEventEnd → double

The domContentLoadedEventEnd read-only property returns a DOMHighResTimeStamp representing the time immediately after the current document's DOMContentLoaded event handler completes.

no setter

domContentLoadedEventStart → double

The domContentLoadedEventStart read-only property returns a DOMHighResTimeStamp representing the time immediately before the current document's DOMContentLoaded event handler starts.

no setter

domInteractive → double

The domInteractive read-only property returns a DOMHighResTimeStamp representing the time immediately before the user agent sets the document's readyState to "interactive".

no setter

duration → double

The read-only duration property returns a that is the duration of the . The meaning of this property depends on the value of this entry's PerformanceEntry.entryType.

no setter, inherited

encodedBodySize → int

The encodedBodySize read-only property represents the size (in octets) received from the fetch (HTTP or cache) of the payload body before removing any applied content encodings (like gzip or Brotli). If the resource is retrieved from an application cache or a local resource, it must return the size of the payload body before removing any applied content encoding.

no setter, inherited

entryType → String

The read-only entryType property returns a string representing the type of performance metric that this entry represents.

no setter, inherited

fetchStart → double

The fetchStart read-only property represents a DOMHighResTimeStamp immediately before the browser starts to fetch the resource.

no setter, inherited

hashCode → int

The hash code for this object.

no setter, inherited

initiatorType → String

The initiatorType read-only property is a string representing web platform feature that initiated the resource load.

no setter, inherited

isDefinedAndNotNull → bool

Available on JSAny?, provided by the NullableUndefineableJSAnyExtension extension

no setter

isNull → bool

Available on JSAny?, provided by the NullableUndefineableJSAnyExtension extension

Whether this value corresponds to JavaScript null.

no setter

isTruthy → JSBoolean

Available on JSAny?, provided by the JSAnyOperatorExtension extension

The result of !!this in JavaScript.

no setter

isUndefined → bool

Available on JSAny?, provided by the NullableUndefineableJSAnyExtension extension

Whether this value corresponds to JavaScript undefined.

no setter

isUndefinedOrNull → bool

Available on JSAny?, provided by the NullableUndefineableJSAnyExtension extension

no setter

loadEventEnd → double

The loadEventEnd read-only property returns a DOMHighResTimeStamp representing the time immediately after the current document's load event handler completes.

no setter

loadEventStart → double

The loadEventStart read-only property returns a DOMHighResTimeStamp representing the time immediately before the current document's load event handler starts.

no setter

name → String

The read-only name property of the PerformanceEntry interface is a string representing the name for a performance entry. It acts as an identifier, but it does not have to be unique. The value depends on the subclass.

no setter, inherited

nextHopProtocol → String

The nextHopProtocol read-only property is a string representing the network protocol used to fetch the resource, as identified by the ALPN Protocol ID (RFC7301).

no setter, inherited

not → JSBoolean

Available on JSAny?, provided by the JSAnyOperatorExtension extension

The result of !this in JavaScript.

no setter

redirectCount → int

The redirectCount read-only property returns a number representing the number of redirects since the last non-redirect navigation in the current browsing context.

no setter

redirectEnd → double

The redirectEnd read-only property returns a DOMHighResTimeStamp immediately after receiving the last byte of the response of the last redirect.

no setter, inherited

redirectStart → double

The redirectStart read-only property returns a DOMHighResTimeStamp representing the start time of the fetch which that initiates the redirect.

no setter, inherited

renderBlockingStatus → RenderBlockingStatusType

The renderBlockingStatus read-only property returns the render-blocking status of the resource.

no setter, inherited

requestStart → double

The requestStart read-only property returns a DOMHighResTimeStamp of the time immediately before the browser starts requesting the resource from the server, cache, or local resource. If the transport connection fails and the browser retires the request, the value returned will be the start of the retry request.

no setter, inherited

responseEnd → double

The responseEnd read-only property returns a DOMHighResTimeStamp immediately after the browser receives the last byte of the resource or immediately before the transport connection is closed, whichever comes first.

no setter, inherited

responseStart → double

The responseStart read-only property returns a DOMHighResTimeStamp immediately after the browser receives the first byte of the response from the server, cache, or local resource.

no setter, inherited

runtimeType → Type

A representation of the runtime type of the object.

no setter, inherited

secureConnectionStart → double

The secureConnectionStart read-only property returns a DOMHighResTimeStamp immediately before the browser starts the handshake process to secure the current connection. If a secure connection is not used, the property returns zero.

no setter, inherited

serverTiming → JSArray<PerformanceServerTiming>

The serverTiming read-only property returns an array of PerformanceServerTiming entries containing server timing metrics.

no setter, inherited

startTime → double

The read-only startTime property returns the first recorded for this . The meaning of this property depends on the value of this entry's PerformanceEntry.entryType.

no setter, inherited

transferSize → int

The transferSize read-only property represents the size (in octets) of the fetched resource. The size includes the response header fields plus the response payload body (as defined by RFC7230).

no setter, inherited

type → NavigationTimingType

The type read-only property returns the type of navigation.

no setter

unloadEventEnd → double

The unloadEventEnd read-only property returns a DOMHighResTimeStamp representing the time immediately after the current document's unload event handler completes.

no setter

unloadEventStart → double

The unloadEventStart read-only property returns a DOMHighResTimeStamp representing the time immediately before the current document's unload event handler starts.

no setter

workerStart → double

The workerStart read-only property of the PerformanceResourceTiming interface returns a DOMHighResTimeStamp immediately before dispatching the FetchEvent if a Service Worker thread is already running, or immediately before starting the Service Worker thread if it is not already running. If the resource is not intercepted by a Service Worker the property will always return 0.

no setter, inherited

Methods

add(JSAny? any) → JSAny

Available on JSAny?, provided by the JSAnyOperatorExtension extension

The result of this + any in JavaScript.

and(JSAny? any) → JSAny?

Available on JSAny?, provided by the JSAnyOperatorExtension extension

The result of this && any in JavaScript.

callMethod<R extends JSAny?>(JSAny method, [JSAny? arg1, JSAny? arg2, JSAny? arg3, JSAny? arg4]) → R

Available on JSObject, provided by the JSObjectUnsafeUtilExtension extension

Calls method on this JSObject with up to four arguments.

callMethodVarArgs<R extends JSAny?>(JSAny method, [List<JSAny?>? arguments]) → R

Available on JSObject, provided by the JSObjectUnsafeUtilExtension extension

Calls method on this JSObject with a variable number of arguments.

dartify() → Object?

Available on JSAny?, provided by the JSAnyUtilityExtension extension

Converts a JavaScript value to the Dart equivalent if possible.

delete(JSAny property) → JSBoolean

Available on JSObject, provided by the JSObjectUnsafeUtilExtension extension

Deletes the property with key property from this JSObject.

divide(JSAny? any) → JSAny

Available on JSAny?, provided by the JSAnyOperatorExtension extension

The result of this / any in JavaScript.

equals(JSAny? any) → JSBoolean

Available on JSAny?, provided by the JSAnyOperatorExtension extension

The result of this == any in JavaScript.

exponentiate(JSAny? any) → JSAny

Available on JSAny?, provided by the JSAnyOperatorExtension extension

The result of this ** any in JavaScript.

getProperty<R extends JSAny?>(JSAny property) → R

Available on JSObject, provided by the JSObjectUnsafeUtilExtension extension

The value of the property key property of this JSObject.

greaterThan(JSAny? any) → JSBoolean

Available on JSAny?, provided by the JSAnyOperatorExtension extension

The result of this > any in JavaScript.

greaterThanOrEqualTo(JSAny? any) → JSBoolean

Available on JSAny?, provided by the JSAnyOperatorExtension extension

The result of this >= any in JavaScript.

has(String property) → bool

Available on JSObject, provided by the JSObjectUnsafeUtilExtension extension

Shorthand helper for hasProperty to check whether this JSObject contains the property key property, but takes and returns a Dart value.

hasProperty(JSAny property) → JSBoolean

Available on JSObject, provided by the JSObjectUnsafeUtilExtension extension

Whether or not this JSObject contains the property key property.

instanceof(JSFunction constructor) → bool

Available on JSAny?, provided by the JSAnyUtilityExtension extension

Whether this JSAny? is an instanceof constructor.

instanceOfString(String constructorName) → bool

Available on JSAny?, provided by the JSAnyUtilityExtension extension

Whether this JSAny? is an instanceof the constructor that is defined by constructorName, which is looked up in the globalContext.

isA<T extends JSAny?>() → bool

Available on JSAny?, provided by the JSAnyUtilityExtension extension

Whether this JSAny? is an instance of the JavaScript type that is declared by T.

lessThan(JSAny? any) → JSBoolean

Available on JSAny?, provided by the JSAnyOperatorExtension extension

The result of this < any in JavaScript.

lessThanOrEqualTo(JSAny? any) → JSBoolean

Available on JSAny?, provided by the JSAnyOperatorExtension extension

The result of this <= any in JavaScript.

modulo(JSAny? any) → JSAny

Available on JSAny?, provided by the JSAnyOperatorExtension extension

The result of this % any in JavaScript.

multiply(JSAny? any) → JSAny

Available on JSAny?, provided by the JSAnyOperatorExtension extension

The result of this * any in JavaScript.

noSuchMethod(Invocation invocation) → dynamic

Invoked when a nonexistent method or property is accessed.

inherited

notEquals(JSAny? any) → JSBoolean

Available on JSAny?, provided by the JSAnyOperatorExtension extension

The result of this != any in JavaScript.

or(JSAny? any) → JSAny?

Available on JSAny?, provided by the JSAnyOperatorExtension extension

The result of this || any in JavaScript.

setProperty(JSAny property, JSAny? value) → void

Available on JSObject, provided by the JSObjectUnsafeUtilExtension extension

Write the value of property key property of this JSObject.

strictEquals(JSAny? any) → JSBoolean

Available on JSAny?, provided by the JSAnyOperatorExtension extension

The result of this === any in JavaScript.

strictNotEquals(JSAny? any) → JSBoolean

Available on JSAny?, provided by the JSAnyOperatorExtension extension

The result of this !== any in JavaScript.

subtract(JSAny? any) → JSAny

Available on JSAny?, provided by the JSAnyOperatorExtension extension

The result of this - any in JavaScript.

toJSON() → JSObject

The toJSON() method of the PerformanceNavigationTiming interface is a ; it returns a JSON representation of the PerformanceNavigationTiming object.

override

toString() → String

A string representation of this object.

inherited

typeofEquals(String typeString) → bool

Available on JSAny?, provided by the JSAnyUtilityExtension extension

Whether the result of typeof on this JSAny? is typeString.

unsignedRightShift(JSAny? any) → JSNumber

Available on JSAny?, provided by the JSAnyOperatorExtension extension

The result of this >>> any in JavaScript.

Operators

operator ==(Object other) → bool

The equality operator.

inherited

operator [](String property) → JSAny?

Available on JSObject, provided by the JSObjectUnsafeUtilExtension extension

Shorthand helper for getProperty to get the value of the property key property of this JSObject, but takes and returns a Dart value.

operator []=(String property, JSAny? value) → void

Available on JSObject, provided by the JSObjectUnsafeUtilExtension extension

Shorthand helper for setProperty to write the value of the property key property of this JSObject, but takes a Dart value.