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PerformanceMark: detail property

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

Value

Returns the value it is set to (from markOptions of performance.mark() or the PerformanceMark() constructor).

Examples

The following example demonstrates the detail property.

js

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

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

dogEntries[0].detail; // labrador

Specifications

Browser compatibility

Desktop Mobile
Chrome Edge Firefox Internet Explorer Opera Safari WebView Android Chrome Android Firefox for Android Opera Android Safari on IOS Samsung Internet
detail 78 79 101 No 65 14.1 79 78 101 56 14.5 12.0

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https://developer.mozilla.org/en-US/docs/Web/API/PerformanceMark/detail