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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)
fetchStart0

DNS

EventTiming (ms)
domainLookupStart0
domainLookupEnd0

TCP

EventTiming (ms)
connectStart42
secureConnectionStart51
connectEnd1942

Request

EventTiming (ms)
requestStart1942

Response

EventTiming (ms)
responseStart2532
responseEnd2535

Processing

EventTiming (ms)
domInteractive2548
domContentLoadedEventStart2548
domContentLoadedEventEnd2548
domComplete2548

Load

EventTiming (ms)
loadEventStart2548
loadEventEnd2548