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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)
connectStart63
secureConnectionStart75
connectEnd621

Request

EventTiming (ms)
requestStart621

Response

EventTiming (ms)
responseStart1279
responseEnd1283

Processing

EventTiming (ms)
domInteractive3624
domContentLoadedEventStart3624
domContentLoadedEventEnd3641
domComplete4557

Load

EventTiming (ms)
loadEventStart4558
loadEventEnd4561