The toJSON() method of the Performance interface is a standard serializer: it returns a JSON representation of the performance object's properties.
Syntax
myPerf = performance.toJSON()
Arguments
- None
Return value
- myPerf
- A JSON object that is the serialization of the
Performanceobject.
Example
var js;
js = window.performance.toJSON();
console.log("json = " + JSON.stringify(js));
Specifications
| Specification | Status | Comment |
|---|---|---|
| High Resolution Time Level 2 The definition of 'toJSON() serializer' in that specification. |
Candidate 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.
| Feature | Chrome | Edge | Firefox | Internet Explorer | Opera | Safari |
|---|---|---|---|---|---|---|
| Basic support | No | Yes | 25 | ? | No | No |
| Feature | Android webview | Chrome for Android | Edge mobile | Firefox for Android | Opera Android | iOS Safari | Samsung Internet |
|---|---|---|---|---|---|---|---|
| Basic support | No | No | Yes | 25 | No | ? | ? |