ReadonlydurationThe read-only duration property returns a DOMHighResTimeStamp that is the duration of the PerformanceEntry.
ReadonlyentryThe read-only entryType property returns a string representing the type of performance metric that this entry represents.
ReadonlynameThe read-only name property of the PerformanceEntry interface is a string representing the name for a performance entry.
ReadonlystartThe read-only startTime property returns the first DOMHighResTimeStamp recorded for this PerformanceEntry.
The
PerformanceEntryobject encapsulates a single performance metric that is part of the browser's performance timeline.MDN Reference