This is an experimental technology
Because this technology's specification has not stabilized, check the compatibility table for usage in various browsers. Also note that the syntax and behavior of an experimental technology is subject to change in future versions of browsers as the specification changes.
The toJSON() method is a serializer - it returns a JSON representation of the PerformanceNavigationTiming object.
Syntax
json = resourcePerfEntry.toJSON();
Arguments
- None
Return value
- json
- A JSON object that is the serialization of the
PerformanceNavigationTimingobject 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("navigation");
var entry = perfEntries[0];
// Get the JSON and log it
var json = entry.toJSON();
var s = JSON.stringify(json);
console.log("PerformanceNavigationTiming.toJSON() = " + s);
Specifications
| Specification | Status | Comment |
|---|---|---|
| Navigation Timing Level 2 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. | No support | No support | No support | No support | No support |
| Feature | Android | Firefox Mobile (Gecko) | Firefox OS | IE Phone | Opera Mobile | Safari Mobile |
|---|---|---|---|---|---|---|
| Basic support. | No support | No support | No support | No support | No support | No support |