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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)
fetchStart89

DNS

EventTiming (ms)
domainLookupStart89
domainLookupEnd89

TCP

EventTiming (ms)
connectStart91
secureConnectionStart98
connectEnd140

Request

EventTiming (ms)
requestStart141

Response

EventTiming (ms)
responseStart173
responseEnd270

Processing

EventTiming (ms)
domInteractive2412
domContentLoadedEventStart2413
domContentLoadedEventEnd2423
domComplete6765

Load

EventTiming (ms)
loadEventStart6765
loadEventEnd6774