IHTMLPerformanceTiming interface

Provides properties for accessing the timestamps that are associated with built-in performance marks.

Members

The IHTMLPerformanceTiming interface inherits from the IDispatch interface. IHTMLPerformanceTiming also has these types of members:

• Methods
• Properties

Methods

The IHTMLPerformanceTiming interface has these methods.

Method	Description
toJSON	Returns the calling object as a JSON object.

 

Properties

The IHTMLPerformanceTiming interface has these properties.

Property	Description
connectEnd	Gets the time that the user agent finishes establishing the connection to the server to retrieve the current document.
connectStart	Gets the time immediately before the user agent starts establishing the connection to the server to retrieve the document.
domainLookupEnd	The IHTMLPerformanceTiming::domainLookupEnd property must return the time immediately after the user agent finishes the domain name lookup for the current document. If a persistent connection is used or the current document is retrieved from relevant application caches or local resources, this property must return the same value as IHTMLPerformanceTiming::fetchStart.
domainLookupStart	The IHTMLPerformanceTiming::domainLookupStart property must return the time immediately before the user agent starts the domain name lookup for the current document. If a persistent connection is used or the current document is retrieved from relevant application caches or local resources, this attribute must return the same value as IHTMLPerformanceTiming::fetchStart.
domComplete	The IHTMLPerformanceTiming::domComplete property must return the time immediately before the user agent sets the current document readiness to complete.
domContentLoadedEventEnd	Gets the time when the DOM content finished loading into the document that is loaded by the window object.
domContentLoadedEventStart	The IHTMLPerformanceTiming::domContentLoadedEventStart property must return the time immediately before the user agent fires the DOMContentLoaded event of the document.
domInteractive	The IHTMLPerformanceTiming::domInteractive property must return the time immediately before the user agent sets the current document readiness to interactive.
domLoading	The IHTMLPerformanceTiming::domLoading property must return the time immediately before the user agent sets the current document readiness to loading.
fetchStart	Gets the time when the user agent starts fetching the resource.
loadEventEnd	The IHTMLPerformanceTiming::loadEventEnd property must return the time when the load event of the current document is completed. It must return zero when the load event is not fired or is not completed.
loadEventStart	The IHTMLPerformanceTiming::loadEventStart property must return the time immediately before the load event of the current document is fired. It must return zero if the load event has not been fired.
msFirstPaint	Gets the time when the document loaded by the window object began to be displayed to the user.
navigationStart	The IHTMLPerformanceTiming::navigationStart property must return the time immediately after the user agent finishes prompting to unload the previous document. If there is no previous document, this property must return the same value as IHTMLPerformanceTiming::fetchStart.
redirectEnd	If there are HTTP redirects or equivalent when navigating and all redirects and equivalents are from the same origin, the IHTMLPerformanceTiming::redirectEnd property must return the time immediately after receiving the last byte of the response of the last redirect. Otherwise, this property must return zero.
redirectStart	If there are HTTP redirects or equivalent when navigating and if all the redirects or equivalent are from the same origin, the IHTMLPerformanceTiming::redirectStart property must return the starting time of the fetch that initiates the redirect. Otherwise, this attribute must return zero.
requestStart	The IHTMLPerformanceTiming::requestStart property must return the time immediately before the user agent starts requesting the current document from the server, from relevant application caches, or from local resources.
responseEnd	The IHTMLPerformanceTiming::responseEnd property must return the time immediately after the user agent receives the last byte of the current document or immediately before the transport connection is closed, whichever comes first. The document here can be received either from the server, relevant application caches, or from local resources.
responseStart	The IHTMLPerformanceTiming::responseStart property must return the time immediately after the user agent receives the first byte of the response from the server, from relevant application caches, or from local resources.
unloadEventEnd	If the previous document and the current document have the same origin, the IHTMLPerformanceTiming::unloadEventEnd property must return the time immediately after the user agent finishes the unload event of the previous document. If there is no previous document or the previous document has a different origin than the current document, or the unload is not yet completed, this attribute must return zero.
unloadEventStart	If the previous document and the current document have the same origin, the IHTMLPerformanceTiming::unloadEventStart property must return the time immediately before the user agent starts the unload event of the previous document. If there is no previous document or the previous document has a different origin than the current document, this attribute must return zero.

 

Remarks

When a webpage is displayed in Defining Document Compatibility, Windows Internet Explorer records timestamps that correspond to the time when various steps occured during the process used to load a document. Each property of the IHTMLPerformanceTiming interface corresponds to one of these timestamps.

The timestamps are recorded in the following order:

• IHTMLPerformanceTiming::navigationStart
• IHTMLPerformanceTiming::fetchStart
• IHTMLPerformanceTiming::unloadEventStart
• IHTMLPerformanceTiming::unloadEventEnd
• IHTMLPerformanceTiming::domainLookupStart
• IHTMLPerformanceTiming::domainLookupEnd
• IHTMLPerformanceTiming::connectStart
• IHTMLPerformanceTiming::connectEnd
• IHTMLPerformanceTiming::requestStart
• IHTMLPerformanceTiming::redirectStart
• IHTMLPerformanceTiming::redirectEnd
• IHTMLPerformanceTiming::responseStart
• IHTMLPerformanceTiming::responseEnd
• IHTMLPerformanceTiming::domLoading
• IHTMLPerformanceTiming::domInteractive
• IHTMLPerformanceTiming::domContentLoadedEventStart
• IHTMLPerformanceTiming::domContentLoadedEventEnd
• IHTMLPerformanceTiming::domComplete
• IHTMLPerformanceTiming::loadEventStart
• IHTMLPerformanceTiming::loadEventEnd
• IHTMLPerformanceTiming::msFirstPaint

The values reported by the properties of the IHTMLPerformanceTiming interface represent the number of milliseconds between the recorded time and midnight January 1, 1970 (UTC).

Requirements

Minimum supported client	Windows Vista with SP1, Windows 7
Minimum supported server	Windows Server 2008 R2
Header	Mshtml.h
IDL	Mshtml.idl
DLL	Mshtml.dll

See also

IDispatch