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Performance Navigation Timing

The PerformanceNavigationTiming interface provides metrics regarding the browser's document navigation events

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Process Unload Event

EventTiming (ms)
unloadEventStart0
unloadEventEnd0

Redirect

EventTiming (ms)
redirectStart0
redirectEnd0

Service Worker Init

EventTiming (ms)
workerStart0

Service Worker Fetch Event

EventTiming (ms)
fetchStart0

DNS

EventTiming (ms)
domainLookupStart0
domainLookupEnd0

TCP

EventTiming (ms)
connectStart42
secureConnectionStart52
connectEnd690

Request

EventTiming (ms)
requestStart691

Response

EventTiming (ms)
responseStart1553
responseEnd1803

Processing

EventTiming (ms)
domInteractive3096
domContentLoadedEventStart3662
domContentLoadedEventEnd3670
domComplete4934

Load

EventTiming (ms)
loadEventStart4934
loadEventEnd4934