NotRestoredReasonDetails: toJSON() method
Limited availability
This feature is not Baseline because it does not work in some of the most widely-used browsers.
Experimental: This is an experimental technology
Check the Browser compatibility table carefully before using this in production.
The toJSON() method of the NotRestoredReasonDetails interface is a serializer; it returns a JSON representation of the NotRestoredReasonDetails object.
Syntax
js
toJSON()
Parameters
None.
Return value
A JSON object that is the serialization of the NotRestoredReasonDetails object.
Examples
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:
js
function returnNRR() {
const navEntries = performance.getEntriesByType("navigation");
let navEntry = navEntries[0];
return navEntry.notRestoredReasons.reasons[0].toJSON();
}
Specifications
| Specification |
|---|
| HTML # notrestoredreasondetails |
Browser compatibility
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