The PerformanceResourceTiming interface enables retrieval and
of detailed network timing data regarding the loading of an application's
An application can use the timing metrics to determine, for example,
length of time it takes to fetch a specific resource, such as
web.XMLHttpRequest
, <SVG>
, image, or script.
The PerformanceResourceTiming interface enables retrieval and of detailed network timing data regarding the loading of an application's An application can use the timing metrics to determine, for example, length of time it takes to fetch a specific resource, such as `web.XMLHttpRequest`, `<SVG>`, image, or script.
(connect-end this)
Property.
The connectEnd read-only property returns the timestamp
immediately
the browser finishes establishing the connection to the server
retrieve the resource. The timestamp value includes the time
to establish the transport connection, as well as other time
such as SSL handshake and SOCKS authentication.
resource.connectEnd;
See also: https://developer.mozilla.org/en-US/docs/Web/API/PerformanceResourceTiming/connectEnd
Property. The connectEnd read-only property returns the `timestamp` immediately the browser finishes establishing the connection to the server retrieve the resource. The timestamp value includes the time to establish the transport connection, as well as other time such as SSL handshake and SOCKS authentication. `resource.connectEnd;` See also: `https://developer.mozilla.org/en-US/docs/Web/API/PerformanceResourceTiming/connectEnd`
(connect-start this)
Property.
The connectStart read-only property returns the timestamp
immediately
the user agent starts establishing the connection to the server
retrieve the resource.
resource.connectStart;
See also: https://developer.mozilla.org/en-US/docs/Web/API/PerformanceResourceTiming/connectStart
Property. The connectStart read-only property returns the `timestamp` immediately the user agent starts establishing the connection to the server retrieve the resource. `resource.connectStart;` See also: `https://developer.mozilla.org/en-US/docs/Web/API/PerformanceResourceTiming/connectStart`
(decoded-body-size this)
Property.
The decodedBodySize read-only property returns the size (in octets) from the fetch (HTTP or cache) of the message body, after removing applied content-codings. If the resource is retrieved from an cache or local resources, it returns the size of the payload removing any applied content-codings.
resource.decodedBodySize;
See also: https://developer.mozilla.org/en-US/docs/Web/API/PerformanceResourceTiming/decodedBodySize
Property. The decodedBodySize read-only property returns the size (in octets) from the fetch (HTTP or cache) of the message body, after removing applied content-codings. If the resource is retrieved from an cache or local resources, it returns the size of the payload removing any applied content-codings. `resource.decodedBodySize;` See also: `https://developer.mozilla.org/en-US/docs/Web/API/PerformanceResourceTiming/decodedBodySize`
(domain-lookup-end this)
Property.
The domainLookupEnd read-only property returns the timestamp
after the browser finishes the domain name lookup for the resource.
resource.domainLookupEnd;
See also: https://developer.mozilla.org/en-US/docs/Web/API/PerformanceResourceTiming/domainLookupEnd
Property. The domainLookupEnd read-only property returns the `timestamp` after the browser finishes the domain name lookup for the resource. `resource.domainLookupEnd;` See also: `https://developer.mozilla.org/en-US/docs/Web/API/PerformanceResourceTiming/domainLookupEnd`
(domain-lookup-start this)
Property.
The domainLookupStart read-only property returns the timestamp
before the browser starts the domain name lookup for the resource.
resource.domainLookupStart;
See also: https://developer.mozilla.org/en-US/docs/Web/API/PerformanceResourceTiming/domainLookupStart
Property. The domainLookupStart read-only property returns the `timestamp` before the browser starts the domain name lookup for the resource. `resource.domainLookupStart;` See also: `https://developer.mozilla.org/en-US/docs/Web/API/PerformanceResourceTiming/domainLookupStart`
(encoded-body-size this)
Property.
The encodedBodySize read-only property represents the size (in received from the fetch (HTTP or cache), of the payload body, removing any applied content-codings.
resource.encodedBodySize;
See also: https://developer.mozilla.org/en-US/docs/Web/API/PerformanceResourceTiming/encodedBodySize
Property. The encodedBodySize read-only property represents the size (in received from the fetch (HTTP or cache), of the payload body, removing any applied content-codings. `resource.encodedBodySize;` See also: `https://developer.mozilla.org/en-US/docs/Web/API/PerformanceResourceTiming/encodedBodySize`
(fetch-start this)
Property.
The fetchStart read-only property represents a timestamp
immediately
the browser starts to fetch the resource.
resource.fetchStart;
See also: https://developer.mozilla.org/en-US/docs/Web/API/PerformanceResourceTiming/fetchStart
Property. The fetchStart read-only property represents a `timestamp` immediately the browser starts to fetch the resource. `resource.fetchStart;` See also: `https://developer.mozilla.org/en-US/docs/Web/API/PerformanceResourceTiming/fetchStart`
(initiator-type this)
Property.
The initiatorType read-only property is a string
that represents
type of resource that initiated the performance event.
resource.initiatorType;
See also: https://developer.mozilla.org/en-US/docs/Web/API/PerformanceResourceTiming/initiatorType
Property. The initiatorType read-only property is a `string` that represents type of resource that initiated the performance event. `resource.initiatorType;` See also: `https://developer.mozilla.org/en-US/docs/Web/API/PerformanceResourceTiming/initiatorType`
(next-hop-protocol this)
Property.
The nextHopProtocol read-only property is a string
representing
network protocol used to fetch the resource, as identified by
ALPN Protocol ID (RFC7301).
resource.nextHopProtocol;
See also: https://developer.mozilla.org/en-US/docs/Web/API/PerformanceResourceTiming/nextHopProtocol
Property. The nextHopProtocol read-only property is a `string` representing network protocol used to fetch the resource, as identified by ALPN Protocol ID (RFC7301). `resource.nextHopProtocol;` See also: `https://developer.mozilla.org/en-US/docs/Web/API/PerformanceResourceTiming/nextHopProtocol`
(redirect-end this)
Property.
The redirectEnd read-only property returns a timestamp
immediately
receiving the last byte of the response of the last redirect.
resource.redirectEnd;
See also: https://developer.mozilla.org/en-US/docs/Web/API/PerformanceResourceTiming/redirectEnd
Property. The redirectEnd read-only property returns a `timestamp` immediately receiving the last byte of the response of the last redirect. `resource.redirectEnd;` See also: `https://developer.mozilla.org/en-US/docs/Web/API/PerformanceResourceTiming/redirectEnd`
(redirect-start this)
Property.
The redirectStart read-only property returns a timestamp
representing
start time of the fetch which that initiates the redirect.
resource.redirectStart;
See also: https://developer.mozilla.org/en-US/docs/Web/API/PerformanceResourceTiming/redirectStart
Property. The redirectStart read-only property returns a `timestamp` representing start time of the fetch which that initiates the redirect. `resource.redirectStart;` See also: `https://developer.mozilla.org/en-US/docs/Web/API/PerformanceResourceTiming/redirectStart`
(request-start this)
Property.
The requestStart read-only property returns a timestamp
of
time immediately before the browser starts requesting the resource
the server, cache, or local resource. If the transport connection
and the browser retires the request, the value returned will
the start of the retry request.
resource.requestStart;
See also: https://developer.mozilla.org/en-US/docs/Web/API/PerformanceResourceTiming/requestStart
Property. The requestStart read-only property returns a `timestamp` of time immediately before the browser starts requesting the resource the server, cache, or local resource. If the transport connection and the browser retires the request, the value returned will the start of the retry request. `resource.requestStart;` See also: `https://developer.mozilla.org/en-US/docs/Web/API/PerformanceResourceTiming/requestStart`
(response-end this)
Property.
The responseEnd read-only property returns a timestamp
immediately
the browser receives the last byte of the resource or immediately
the transport connection is closed, whichever comes first.
resource.responseEnd;
See also: https://developer.mozilla.org/en-US/docs/Web/API/PerformanceResourceTiming/responseEnd
Property. The responseEnd read-only property returns a `timestamp` immediately the browser receives the last byte of the resource or immediately the transport connection is closed, whichever comes first. `resource.responseEnd;` See also: `https://developer.mozilla.org/en-US/docs/Web/API/PerformanceResourceTiming/responseEnd`
(response-start this)
Property.
The responseStart read-only property returns a timestamp
immediately
the browser receives the first byte of the response from the
cache, or local resource.
resource.responseStart;
See also: https://developer.mozilla.org/en-US/docs/Web/API/PerformanceResourceTiming/responseStart
Property. The responseStart read-only property returns a `timestamp` immediately the browser receives the first byte of the response from the cache, or local resource. `resource.responseStart;` See also: `https://developer.mozilla.org/en-US/docs/Web/API/PerformanceResourceTiming/responseStart`
(secure-connection-start this)
Property.
The secureConnectionStart read-only property returns a timestamp
before the browser starts the handshake process to secure the
connection. If a secure connection is not used, the property
zero.
resource.secureConnectionStart;
See also: https://developer.mozilla.org/en-US/docs/Web/API/PerformanceResourceTiming/secureConnectionStart
Property. The secureConnectionStart read-only property returns a `timestamp` before the browser starts the handshake process to secure the connection. If a secure connection is not used, the property zero. `resource.secureConnectionStart;` See also: `https://developer.mozilla.org/en-US/docs/Web/API/PerformanceResourceTiming/secureConnectionStart`
(server-timing this)
Property.
The serverTiming read-only property returns an array of web.performance.PerformanceServerTiming
containing server timing metrics.
resource.serverTiming;
See also: https://developer.mozilla.org/en-US/docs/Web/API/PerformanceResourceTiming/serverTiming
Property. The serverTiming read-only property returns an array of `web.performance.PerformanceServerTiming` containing server timing metrics. `resource.serverTiming;` See also: `https://developer.mozilla.org/en-US/docs/Web/API/PerformanceResourceTiming/serverTiming`
(set-connect-end! this val)
Property.
The connectEnd read-only property returns the timestamp
immediately
the browser finishes establishing the connection to the server
retrieve the resource. The timestamp value includes the time
to establish the transport connection, as well as other time
such as SSL handshake and SOCKS authentication.
resource.connectEnd;
See also: https://developer.mozilla.org/en-US/docs/Web/API/PerformanceResourceTiming/connectEnd
Property. The connectEnd read-only property returns the `timestamp` immediately the browser finishes establishing the connection to the server retrieve the resource. The timestamp value includes the time to establish the transport connection, as well as other time such as SSL handshake and SOCKS authentication. `resource.connectEnd;` See also: `https://developer.mozilla.org/en-US/docs/Web/API/PerformanceResourceTiming/connectEnd`
(set-connect-start! this val)
Property.
The connectStart read-only property returns the timestamp
immediately
the user agent starts establishing the connection to the server
retrieve the resource.
resource.connectStart;
See also: https://developer.mozilla.org/en-US/docs/Web/API/PerformanceResourceTiming/connectStart
Property. The connectStart read-only property returns the `timestamp` immediately the user agent starts establishing the connection to the server retrieve the resource. `resource.connectStart;` See also: `https://developer.mozilla.org/en-US/docs/Web/API/PerformanceResourceTiming/connectStart`
(set-decoded-body-size! this val)
Property.
The decodedBodySize read-only property returns the size (in octets) from the fetch (HTTP or cache) of the message body, after removing applied content-codings. If the resource is retrieved from an cache or local resources, it returns the size of the payload removing any applied content-codings.
resource.decodedBodySize;
See also: https://developer.mozilla.org/en-US/docs/Web/API/PerformanceResourceTiming/decodedBodySize
Property. The decodedBodySize read-only property returns the size (in octets) from the fetch (HTTP or cache) of the message body, after removing applied content-codings. If the resource is retrieved from an cache or local resources, it returns the size of the payload removing any applied content-codings. `resource.decodedBodySize;` See also: `https://developer.mozilla.org/en-US/docs/Web/API/PerformanceResourceTiming/decodedBodySize`
(set-domain-lookup-end! this val)
Property.
The domainLookupEnd read-only property returns the timestamp
after the browser finishes the domain name lookup for the resource.
resource.domainLookupEnd;
See also: https://developer.mozilla.org/en-US/docs/Web/API/PerformanceResourceTiming/domainLookupEnd
Property. The domainLookupEnd read-only property returns the `timestamp` after the browser finishes the domain name lookup for the resource. `resource.domainLookupEnd;` See also: `https://developer.mozilla.org/en-US/docs/Web/API/PerformanceResourceTiming/domainLookupEnd`
(set-domain-lookup-start! this val)
Property.
The domainLookupStart read-only property returns the timestamp
before the browser starts the domain name lookup for the resource.
resource.domainLookupStart;
See also: https://developer.mozilla.org/en-US/docs/Web/API/PerformanceResourceTiming/domainLookupStart
Property. The domainLookupStart read-only property returns the `timestamp` before the browser starts the domain name lookup for the resource. `resource.domainLookupStart;` See also: `https://developer.mozilla.org/en-US/docs/Web/API/PerformanceResourceTiming/domainLookupStart`
(set-encoded-body-size! this val)
Property.
The encodedBodySize read-only property represents the size (in received from the fetch (HTTP or cache), of the payload body, removing any applied content-codings.
resource.encodedBodySize;
See also: https://developer.mozilla.org/en-US/docs/Web/API/PerformanceResourceTiming/encodedBodySize
Property. The encodedBodySize read-only property represents the size (in received from the fetch (HTTP or cache), of the payload body, removing any applied content-codings. `resource.encodedBodySize;` See also: `https://developer.mozilla.org/en-US/docs/Web/API/PerformanceResourceTiming/encodedBodySize`
(set-fetch-start! this val)
Property.
The fetchStart read-only property represents a timestamp
immediately
the browser starts to fetch the resource.
resource.fetchStart;
See also: https://developer.mozilla.org/en-US/docs/Web/API/PerformanceResourceTiming/fetchStart
Property. The fetchStart read-only property represents a `timestamp` immediately the browser starts to fetch the resource. `resource.fetchStart;` See also: `https://developer.mozilla.org/en-US/docs/Web/API/PerformanceResourceTiming/fetchStart`
(set-initiator-type! this val)
Property.
The initiatorType read-only property is a string
that represents
type of resource that initiated the performance event.
resource.initiatorType;
See also: https://developer.mozilla.org/en-US/docs/Web/API/PerformanceResourceTiming/initiatorType
Property. The initiatorType read-only property is a `string` that represents type of resource that initiated the performance event. `resource.initiatorType;` See also: `https://developer.mozilla.org/en-US/docs/Web/API/PerformanceResourceTiming/initiatorType`
(set-next-hop-protocol! this val)
Property.
The nextHopProtocol read-only property is a string
representing
network protocol used to fetch the resource, as identified by
ALPN Protocol ID (RFC7301).
resource.nextHopProtocol;
See also: https://developer.mozilla.org/en-US/docs/Web/API/PerformanceResourceTiming/nextHopProtocol
Property. The nextHopProtocol read-only property is a `string` representing network protocol used to fetch the resource, as identified by ALPN Protocol ID (RFC7301). `resource.nextHopProtocol;` See also: `https://developer.mozilla.org/en-US/docs/Web/API/PerformanceResourceTiming/nextHopProtocol`
(set-redirect-end! this val)
Property.
The redirectEnd read-only property returns a timestamp
immediately
receiving the last byte of the response of the last redirect.
resource.redirectEnd;
See also: https://developer.mozilla.org/en-US/docs/Web/API/PerformanceResourceTiming/redirectEnd
Property. The redirectEnd read-only property returns a `timestamp` immediately receiving the last byte of the response of the last redirect. `resource.redirectEnd;` See also: `https://developer.mozilla.org/en-US/docs/Web/API/PerformanceResourceTiming/redirectEnd`
(set-redirect-start! this val)
Property.
The redirectStart read-only property returns a timestamp
representing
start time of the fetch which that initiates the redirect.
resource.redirectStart;
See also: https://developer.mozilla.org/en-US/docs/Web/API/PerformanceResourceTiming/redirectStart
Property. The redirectStart read-only property returns a `timestamp` representing start time of the fetch which that initiates the redirect. `resource.redirectStart;` See also: `https://developer.mozilla.org/en-US/docs/Web/API/PerformanceResourceTiming/redirectStart`
(set-request-start! this val)
Property.
The requestStart read-only property returns a timestamp
of
time immediately before the browser starts requesting the resource
the server, cache, or local resource. If the transport connection
and the browser retires the request, the value returned will
the start of the retry request.
resource.requestStart;
See also: https://developer.mozilla.org/en-US/docs/Web/API/PerformanceResourceTiming/requestStart
Property. The requestStart read-only property returns a `timestamp` of time immediately before the browser starts requesting the resource the server, cache, or local resource. If the transport connection and the browser retires the request, the value returned will the start of the retry request. `resource.requestStart;` See also: `https://developer.mozilla.org/en-US/docs/Web/API/PerformanceResourceTiming/requestStart`
(set-response-end! this val)
Property.
The responseEnd read-only property returns a timestamp
immediately
the browser receives the last byte of the resource or immediately
the transport connection is closed, whichever comes first.
resource.responseEnd;
See also: https://developer.mozilla.org/en-US/docs/Web/API/PerformanceResourceTiming/responseEnd
Property. The responseEnd read-only property returns a `timestamp` immediately the browser receives the last byte of the resource or immediately the transport connection is closed, whichever comes first. `resource.responseEnd;` See also: `https://developer.mozilla.org/en-US/docs/Web/API/PerformanceResourceTiming/responseEnd`
(set-response-start! this val)
Property.
The responseStart read-only property returns a timestamp
immediately
the browser receives the first byte of the response from the
cache, or local resource.
resource.responseStart;
See also: https://developer.mozilla.org/en-US/docs/Web/API/PerformanceResourceTiming/responseStart
Property. The responseStart read-only property returns a `timestamp` immediately the browser receives the first byte of the response from the cache, or local resource. `resource.responseStart;` See also: `https://developer.mozilla.org/en-US/docs/Web/API/PerformanceResourceTiming/responseStart`
(set-secure-connection-start! this val)
Property.
The secureConnectionStart read-only property returns a timestamp
before the browser starts the handshake process to secure the
connection. If a secure connection is not used, the property
zero.
resource.secureConnectionStart;
See also: https://developer.mozilla.org/en-US/docs/Web/API/PerformanceResourceTiming/secureConnectionStart
Property. The secureConnectionStart read-only property returns a `timestamp` before the browser starts the handshake process to secure the connection. If a secure connection is not used, the property zero. `resource.secureConnectionStart;` See also: `https://developer.mozilla.org/en-US/docs/Web/API/PerformanceResourceTiming/secureConnectionStart`
(set-server-timing! this val)
Property.
The serverTiming read-only property returns an array of web.performance.PerformanceServerTiming
containing server timing metrics.
resource.serverTiming;
See also: https://developer.mozilla.org/en-US/docs/Web/API/PerformanceResourceTiming/serverTiming
Property. The serverTiming read-only property returns an array of `web.performance.PerformanceServerTiming` containing server timing metrics. `resource.serverTiming;` See also: `https://developer.mozilla.org/en-US/docs/Web/API/PerformanceResourceTiming/serverTiming`
(set-transfer-size! this val)
Property.
The transferSize read-only property represents the size (in octets) the fetched resource. The size includes the response header fields the response payload body (as defined by RFC7230).
resource.transferSize;
See also: https://developer.mozilla.org/en-US/docs/Web/API/PerformanceResourceTiming/transferSize
Property. The transferSize read-only property represents the size (in octets) the fetched resource. The size includes the response header fields the response payload body (as defined by RFC7230). `resource.transferSize;` See also: `https://developer.mozilla.org/en-US/docs/Web/API/PerformanceResourceTiming/transferSize`
(set-worker-start! this val)
Property.
The workerStart read-only property of the web.performance.PerformanceResourceTiming
returns a web.dom.DOMHighResTimeStamp
immediately before dispatching
web.workers.FetchEvent
if a Service Worker thread is already
or immediately before starting the Service Worker thread if it
not already running. If the resource is not intercepted by a
Worker the property will always return 0.
resource.workerStart;
See also: https://developer.mozilla.org/en-US/docs/Web/API/PerformanceResourceTiming/workerStart
Property. The workerStart read-only property of the `web.performance.PerformanceResourceTiming` returns a `web.dom.DOMHighResTimeStamp` immediately before dispatching `web.workers.FetchEvent` if a Service Worker thread is already or immediately before starting the Service Worker thread if it not already running. If the resource is not intercepted by a Worker the property will always return 0. `resource.workerStart;` See also: `https://developer.mozilla.org/en-US/docs/Web/API/PerformanceResourceTiming/workerStart`
(to-json this)
Method.
The toJSON() method is a serializer that returns a JSON representation
the web.performance.PerformanceResourceTiming
object.
json = resourcePerfEntry.toJSON();
See also: https://developer.mozilla.org/en-US/docs/Web/API/PerformanceResourceTiming/toJSON
Method. The toJSON() method is a serializer that returns a JSON representation the `web.performance.PerformanceResourceTiming` object. `json = resourcePerfEntry.toJSON();` See also: `https://developer.mozilla.org/en-US/docs/Web/API/PerformanceResourceTiming/toJSON`
(transfer-size this)
Property.
The transferSize read-only property represents the size (in octets) the fetched resource. The size includes the response header fields the response payload body (as defined by RFC7230).
resource.transferSize;
See also: https://developer.mozilla.org/en-US/docs/Web/API/PerformanceResourceTiming/transferSize
Property. The transferSize read-only property represents the size (in octets) the fetched resource. The size includes the response header fields the response payload body (as defined by RFC7230). `resource.transferSize;` See also: `https://developer.mozilla.org/en-US/docs/Web/API/PerformanceResourceTiming/transferSize`
(worker-start this)
Property.
The workerStart read-only property of the web.performance.PerformanceResourceTiming
returns a web.dom.DOMHighResTimeStamp
immediately before dispatching
web.workers.FetchEvent
if a Service Worker thread is already
or immediately before starting the Service Worker thread if it
not already running. If the resource is not intercepted by a
Worker the property will always return 0.
resource.workerStart;
See also: https://developer.mozilla.org/en-US/docs/Web/API/PerformanceResourceTiming/workerStart
Property. The workerStart read-only property of the `web.performance.PerformanceResourceTiming` returns a `web.dom.DOMHighResTimeStamp` immediately before dispatching `web.workers.FetchEvent` if a Service Worker thread is already or immediately before starting the Service Worker thread if it not already running. If the resource is not intercepted by a Worker the property will always return 0. `resource.workerStart;` See also: `https://developer.mozilla.org/en-US/docs/Web/API/PerformanceResourceTiming/workerStart`
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