PerformanceLongTaskTiming: attribution property

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 attribution read-only property of the PerformanceLongTaskTiming interface returns an array of TaskAttributionTiming objects.

Value

An Array of TaskAttributionTiming objects.

Examples

Logging attributions for long tasks

const observer = new PerformanceObserver((list) => {   list.getEntries().forEach((entry) => {     entry.attribution.forEach((attributionEntry) => {       console.log(attributionEntry);     });   }); });  observer.observe({ type: "longtask", buffered: true });