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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)
fetchStart0

DNS

EventTiming (ms)
domainLookupStart0
domainLookupEnd0

TCP

EventTiming (ms)
connectStart52
secureConnectionStart62
connectEnd184

Request

EventTiming (ms)
requestStart185

Response

EventTiming (ms)
responseStart332
responseEnd336

Processing

EventTiming (ms)
domInteractive1009
domContentLoadedEventStart1009
domContentLoadedEventEnd1017
domComplete1401

Load

EventTiming (ms)
loadEventStart1401
loadEventEnd1401