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 2 The 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.
Desktop | Mobile | |||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|
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