PerformanceNavigationTiming - Web APIs

PerformanceNavigationTiming - Web APIs | MDN

Instance properties

This interface extends the following PerformanceEntry properties by qualifying and constraining them as follows:

PerformanceEntry.entryType Read only: Returns "navigation".
PerformanceEntry.name Read only: Returns the document's URL. Note that text fragments, and any other fragment directives, are stripped from the URL.
PerformanceEntry.startTime Read only: Returns a DOMHighResTimeStamp with a value of 0.
PerformanceEntry.duration Read only: Returns a timestamp that is the difference between the PerformanceNavigationTiming.loadEventEnd and PerformanceEntry.startTime properties.

This interface also extends the following PerformanceResourceTiming properties by qualifying and constraining them as follows:

PerformanceResourceTiming.initiatorType Read only: Returns "navigation".

The interface also supports the following properties:

PerformanceNavigationTiming.activationStart Read only Experimental: A DOMHighResTimeStamp representing the time between when a document starts prerendering and when it is activated.
PerformanceNavigationTiming.criticalCHRestart Read only Experimental: A DOMHighResTimeStamp representing the time at which the connection restart occurred due to Critical-CH HTTP response header mismatch.
PerformanceNavigationTiming.domComplete Read only: A DOMHighResTimeStamp representing the time immediately before the user agent sets the document's readyState to "complete".
PerformanceNavigationTiming.domContentLoadedEventEnd Read only: A DOMHighResTimeStamp representing the time immediately after the current document's DOMContentLoaded event handler completes.
PerformanceNavigationTiming.domContentLoadedEventStart Read only: A DOMHighResTimeStamp representing the time immediately before the current document's DOMContentLoaded event handler starts.
PerformanceNavigationTiming.domInteractive Read only: A DOMHighResTimeStamp representing the time immediately before the user agent sets the document's readyState to "interactive".
PerformanceNavigationTiming.loadEventEnd Read only: A DOMHighResTimeStamp representing the time immediately after the current document's load event handler completes.
PerformanceNavigationTiming.loadEventStart Read only: A DOMHighResTimeStamp representing the time immediately before the current document's load event handler starts.
PerformanceNavigationTiming.notRestoredReasons Read only Experimental: A NotRestoredReasons object providing report data on reasons why the current document was blocked from using the back/forward cache (bfcache) on navigation.
PerformanceNavigationTiming.redirectCount Read only: A number representing the number of redirects since the last non-redirect navigation in the current browsing context.
PerformanceNavigationTiming.type Read only: A string representing the navigation type. Either "navigate", "reload", or "back_forward".
PerformanceNavigationTiming.unloadEventEnd Read only: A DOMHighResTimeStamp representing the time immediately after the current document's unload event handler completes.
PerformanceNavigationTiming.unloadEventStart Read only: A DOMHighResTimeStamp representing the time immediately before the current document's unload event handler starts.