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Performance Navigation Timing

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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)
fetchStart1

DNS

EventTiming (ms)
domainLookupStart1
domainLookupEnd1

TCP

EventTiming (ms)
connectStart49
secureConnectionStart58
connectEnd114

Request

EventTiming (ms)
requestStart115

Response

EventTiming (ms)
responseStart419
responseEnd422

Processing

EventTiming (ms)
domInteractive435
domContentLoadedEventStart435
domContentLoadedEventEnd435
domComplete437

Load

EventTiming (ms)
loadEventStart437
loadEventEnd437