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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 The definition of 'toJSON' in that specification. |
Editor's Draft | Initial definition. |
Browser compatibility
| Feature | Chrome | Firefox (Gecko) | Internet Explorer | Opera | Safari (WebKit) |
|---|---|---|---|---|---|
| Basic support. | 43 | 40 | 10 | 32 | No support |
| Feature | Android | Firefox Mobile (Gecko) | Firefox OS | IE Phone | Opera Mobile | Safari Mobile |
|---|---|---|---|---|---|---|
| Basic support. | 4.4 | 42 | ? | 10.0 | 32 | No support |