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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)
fetchStart1

DNS

EventTiming (ms)
domainLookupStart1
domainLookupEnd1

TCP

EventTiming (ms)
connectStart63
secureConnectionStart70
connectEnd82

Request

EventTiming (ms)
requestStart82

Response

EventTiming (ms)
responseStart96
responseEnd116

Processing

EventTiming (ms)
domInteractive235
domContentLoadedEventStart235
domContentLoadedEventEnd235
domComplete473

Load

EventTiming (ms)
loadEventStart473
loadEventEnd473