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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)
fetchStart213

DNS

EventTiming (ms)
domainLookupStart213
domainLookupEnd213

TCP

EventTiming (ms)
connectStart215
secureConnectionStart225
connectEnd332

Request

EventTiming (ms)
requestStart333

Response

EventTiming (ms)
responseStart457
responseEnd460

Processing

EventTiming (ms)
domInteractive759
domContentLoadedEventStart759
domContentLoadedEventEnd759
domComplete878

Load

EventTiming (ms)
loadEventStart879
loadEventEnd879