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Performance Navigation Timing

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)
connectStart48
secureConnectionStart57
connectEnd264

Request

EventTiming (ms)
requestStart265

Response

EventTiming (ms)
responseStart493
responseEnd560

Processing

EventTiming (ms)
domInteractive1629
domContentLoadedEventStart1629
domContentLoadedEventEnd1631
domComplete1635

Load

EventTiming (ms)
loadEventStart1635
loadEventEnd1637