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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)
unloadEventStart230
unloadEventEnd230

Redirect

EventTiming (ms)
redirectStart0
redirectEnd0

Service Worker Init

EventTiming (ms)
workerStart0

Service Worker Fetch Event

EventTiming (ms)
fetchStart2

DNS

EventTiming (ms)
domainLookupStart2
domainLookupEnd2

TCP

EventTiming (ms)
connectStart2
secureConnectionStart2
connectEnd2

Request

EventTiming (ms)
requestStart9

Response

EventTiming (ms)
responseStart197
responseEnd208

Processing

EventTiming (ms)
domInteractive1033
domContentLoadedEventStart1049
domContentLoadedEventEnd1078
domComplete1968

Load

EventTiming (ms)
loadEventStart1979
loadEventEnd1980