W3cubDocs

/DOM

PerformanceResourceTiming.toJSON

The toJSON() method is a serializer that returns a JSON representation of the PerformanceResourceTiming object.

Syntax

json = resourcePerfEntry.toJSON();

Arguments

None

Return value

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

Example

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

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

Specifications

Specification Status Comment
Resource Timing Level 1
The definition of 'toJSON' in that specification.
Candidate Recommendation Initial definition.

Browser compatibilityUpdate compatibility data on GitHub

Desktop
Chrome Edge Firefox Internet Explorer Opera Safari
Basic support 43 Yes 40 No 30 11
Mobile
Android webview Chrome for Android Edge Mobile Firefox for Android Opera for Android iOS Safari Samsung Internet
Basic support 43 43 Yes 42 30 11 4.0

© 2005–2018 Mozilla Developer Network and individual contributors.
Licensed under the Creative Commons Attribution-ShareAlike License v2.5 or later.
https://developer.mozilla.org/en-US/docs/Web/API/PerformanceResourceTiming/toJSON