PerformanceMark: detail property

{{APIRef("Performance API")}}{{AvailableInWorkers}}

The read-only detail property returns arbitrary metadata that was included in the mark upon construction (either when using {{domxref("Performance.mark","performance.mark()")}} or the {{domxref("PerformanceMark.PerformanceMark","PerformanceMark()")}} constructor).

Value

Returns the value it is set to (from markOptions of {{domxref("Performance.mark","performance.mark()")}} or the {{domxref("PerformanceMark.PerformanceMark","PerformanceMark()")}} constructor).

Examples

The following example demonstrates the detail property.

performance.mark("dog", { detail: "labrador" });

const dogEntries = performance.getEntriesByName("dog");

dogEntries[0].detail; // labrador

Specifications

{{Specifications}}

Browser compatibility

{{Compat}}