The toJSON()
method of the NotRestoredReasonDetails
interface is a serializer; it returns a JSON representation of the NotRestoredReasonDetails
object.
A JSON
object that is the serialization of the NotRestoredReasonDetails
object.
The following function will return a JSON representation of the first NotRestoredReasonDetails
object of the NotRestoredReasons
object from the first PerformanceNavigationTiming
object currently present in the performance timeline:
function returnNRR() {
const navEntries = performance.getEntriesByType("navigation");
let navEntry = navEntries[0];
return navEntry.notRestoredReasons.reasons[0].toJSON();
}