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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)
connectStart64
secureConnectionStart75
connectEnd790

Request

EventTiming (ms)
requestStart790

Response

EventTiming (ms)
responseStart895
responseEnd999

Processing

EventTiming (ms)
domInteractive2035
domContentLoadedEventStart2035
domContentLoadedEventEnd2036
domComplete2712

Load

EventTiming (ms)
loadEventStart2712
loadEventEnd2712