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
We're converting our compatibility data into a machine-readable JSON format. This compatibility table still uses the old format, because we haven't yet converted the data it contains. Find out how you can help!
| Feature | Chrome | Edge | Firefox (Gecko) | Internet Explorer | Opera | Safari (WebKit) |
|---|---|---|---|---|---|---|
toJSON() |
No support | (Yes) | 25.0 (25.0) | ? | No support | No support |
| Feature | Android | Android Webview | Edge | Firefox Mobile (Gecko) | Firefox OS | IE Phone | Opera Mobile | Safari Mobile | Chrome for Android |
|---|---|---|---|---|---|---|---|---|---|
toJSON() |
No support | No support | (Yes) | 25.0 (25.0) | 1.2 (25.0) | ? | No support | ? | No support |