TaskAttributionTiming: toJSON() method
Limited availability
This feature is not Baseline because it does not work in some of the most widely-used browsers.
Experimental: This is an experimental technology
Check the Browser compatibility table carefully before using this in production.
The toJSON() method of the TaskAttributionTiming interface is a serializer; it returns a JSON representation of the TaskAttributionTiming object.
Syntax
js
toJSON() Parameters
None.
Return value
A JSON object that is the serialization of the TaskAttributionTiming object.
Examples
Using the toJSON method
In this example, calling entry.toJSON() returns a JSON representation of the TaskAttributionTiming object.
js
const observer = new PerformanceObserver((list) => { list.getEntries().forEach((entry) => { console.log(entry.toJSON()); }); }); observer.observe({ type: "taskattribution", buffered: true }); This would log a JSON object like so:
json
{ "name": "unknown", "entryType": "taskattribution", "startTime": 0, "duration": 0, "containerType": "window", "containerSrc": "", "containerId": "", "containerName": "" } To get a JSON string, you can use JSON.stringify(entry) directly; it will call toJSON() automatically.
Specifications
| Specification |
|---|
| Long Tasks API # dom-taskattributiontiming-tojson |