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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)
connectStart68
secureConnectionStart79
connectEnd204

Request

EventTiming (ms)
requestStart204

Response

EventTiming (ms)
responseStart398
responseEnd402

Processing

EventTiming (ms)
domInteractive426
domContentLoadedEventStart426
domContentLoadedEventEnd427
domComplete427

Load

EventTiming (ms)
loadEventStart427
loadEventEnd427