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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)
fetchStart1

DNS

EventTiming (ms)
domainLookupStart1
domainLookupEnd1

TCP

EventTiming (ms)
connectStart136
secureConnectionStart151
connectEnd430

Request

EventTiming (ms)
requestStart430

Response

EventTiming (ms)
responseStart638
responseEnd727

Processing

EventTiming (ms)
domInteractive1600
domContentLoadedEventStart1600
domContentLoadedEventEnd1793
domComplete2141

Load

EventTiming (ms)
loadEventStart2141
loadEventEnd2141