This is an experimental technology
Check the Browser compatibility table carefully before using this in production.

The toJSON() method is a serializer - it returns a JSON representation of the PerformanceNavigationTiming object.


json = resourcePerfEntry.toJSON();



Return value

A JSON object that is the serialization of the PerformanceNavigationTiming object as a map with entries from the closest inherited interface and with entries for each of the serializable attributes.


// Get a resource performance entry
var perfEntries = performance.getEntriesByType("navigation");
var entry = perfEntries[0];

// Get the JSON and log it
var json = entry.toJSON();
var s = JSON.stringify(json);
console.log("PerformanceNavigationTiming.toJSON() = " + s);


Specification Status Comment
Navigation Timing Level 2
The definition of 'toJSON()' in that specification.
Working Draft Initial definition.

Browser compatibility

FeatureChromeEdgeFirefoxInternet ExplorerOperaSafari
Basic support43 Yes40 No3011
FeatureAndroid webviewChrome for AndroidEdge mobileFirefox for AndroidOpera AndroidiOS SafariSamsung Internet
Basic support4343 Yes4230114.0

Document Tags and Contributors

Contributors to this page: ExE-Boss, chrisdavidmills, rolfedh, AFBarstow
Last updated by: ExE-Boss,