Web/API/Performance/toJSON

The toJSON() method of the Performance interface is a standard serializer: it returns a JSON representation of the performance object's properties.

Note: This feature is available in Web Workers.

Syntax

myPerf = performance.toJSON()

Arguments

None

 

Return value

myPerf

A JSON object that is the serialization of the Performance object.

Example

var js;
js = window.performance.toJSON();
console.log("json = " + JSON.stringify(js));

Specifications

Specification	Status	Comment
High Resolution Time Level 2The definition of 'toJSON() serializer' in that specification.	Recommendation	Defines toJson().

Browser compatibility

The compatibility table on this page is generated from structured data. If you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request.

Update compatibility data on GitHub

	Desktop						Mobile
	Chrome	Edge	Firefox	Internet Explorer	Opera	Safari	Android webview	Chrome for Android	Firefox for Android	Opera for Android	Safari on iOS	Samsung Internet
toJSON	Chrome Full support 56	Edge Full support 12	Firefox Full support 25	IE ?	Opera No support No	Safari No support No	WebView Android Full support 56	Chrome Android Full support 56	Firefox Android Full support 25	Opera Android No support No	Safari iOS No support No	Samsung Internet Android Full support 6.0

Legend

Full support  

Full support

No support  

No support

Compatibility unknown  

Compatibility unknown

performance.toJSON() by Mozilla Contributors is licensed under CC-BY-SA 2.5.