The toJSON() method of the Performance interface is a standard serializer: it returns a JSON representation of the performance object's properties.
myPerf = performance.toJSON()
Performance object.var js;
js = window.performance.toJSON();
console.log("json = " + JSON.stringify(js));
| Specification | Status | Comment |
|---|---|---|
| High Resolution Time Level 2 The definition of 'toJSON() serializer' in that specification. | Candidate Recommendation | Defines toJson(). |
| Desktop | ||||||
|---|---|---|---|---|---|---|
| Chrome | Edge | Firefox | Internet Explorer | Opera | Safari | |
| Basic support | No | Yes | 25 | ? | No | No |
| Mobile | |||||||
|---|---|---|---|---|---|---|---|
| Android webview | Chrome for Android | Edge Mobile | Firefox for Android | Opera for Android | iOS Safari | Samsung Internet | |
| Basic support | No | No | Yes | 25 | No | No | ? |
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https://developer.mozilla.org/en-US/docs/Web/API/Performance/toJSON