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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)
connectStart59
secureConnectionStart71
connectEnd418

Request

EventTiming (ms)
requestStart418

Response

EventTiming (ms)
responseStart777
responseEnd781

Processing

EventTiming (ms)
domInteractive1093
domContentLoadedEventStart1093
domContentLoadedEventEnd1094
domComplete2080

Load

EventTiming (ms)
loadEventStart2081
loadEventEnd2081