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

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

Specifications

Specification
Long Tasks API
# dom-performancelongtasktiming-attribution

Browser compatibility

See also