The toJSON() method is a serializer that returns a JSON representation of the PerformanceResourceTiming object.
Syntax
json = resourcePerfEntry.toJSON();
Arguments
- None
Return value
- json
- A JSON object that is the serialization of the
PerformanceResourceTimingobject as a map with entries from the closest inherited interface and with entries for each of the serializable attributes.
Example
// Get a resource performance entry
var perfEntries = performance.getEntriesByType("resource");
var entry = perfEntries[0];
// Get the JSON and log it
var json = entry.toJSON();
var s = JSON.stringify(json);
console.log("PerformanceEntry.toJSON = " + s);
Specifications
| Specification | Status | Comment |
|---|---|---|
| Resource Timing Level 1 The definition of 'toJSON' in that specification. |
Candidate Recommendation | Initial definition. |
Browser compatibility
The compatibility table in 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 | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Basic support | Chrome Full support 43 | Edge Full support Yes | Firefox Full support 40 | IE No support No | Opera Full support 30 | Safari Full support 11 | WebView Android Full support 43 | Chrome Android Full support 43 | Edge Mobile Full support Yes | Firefox Android Full support 42 | Opera Android Full support 30 | Safari iOS Full support 11 | Samsung Internet Android Full support 4.0 |
Legend
- Full support
- Full support
- No support
- No support