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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)
connectStart42
secureConnectionStart51
connectEnd243

Request

EventTiming (ms)
requestStart244

Response

EventTiming (ms)
responseStart483
responseEnd485

Processing

EventTiming (ms)
domInteractive841
domContentLoadedEventStart843
domContentLoadedEventEnd843
domComplete1105

Load

EventTiming (ms)
loadEventStart1105
loadEventEnd1106