NotRestoredReasonDetails: toJSON() method

The toJSON() method of the NotRestoredReasonDetails interface is a serializer; it returns a JSON representation of the NotRestoredReasonDetails object.

None.

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();
}

• JSON
• Monitoring bfcache blocking reasons
• PerformanceNavigationTiming.notRestoredReasons