Performance: getEntriesByName() method

The getEntriesByName() method returns an array of PerformanceEntry objects currently present in the performance timeline with the given name and type.

If you are interested in performance entries of certain types, see getEntriesByType(). For all performance entries, see getEntries().

The following entry types are not supported by this method at all and won't be returned even if entries for these types might exist:

• "element" (PerformanceElementTiming)
• "event" (PerformanceEventTiming)
• "largest-contentful-paint" (LargestContentfulPaint)
• "layout-shift" (LayoutShift)
• "longtask" (PerformanceLongTaskTiming)

To access entries of these types, you must use a PerformanceObserver instead.

Syntax

getEntriesByName(name)
getEntriesByName(name, type)

Parameters

name

The name of the entries to retrieve.

type Optional

The type of entries to retrieve such as "mark". The valid entry types are listed in PerformanceEntry.entryType.

Return value

An Array of PerformanceEntry objects that have the specified name and type. The items will be in chronological order based on the entries' startTime. If no objects meet the specified criteria, an empty array is returned.

Examples

Logging performance markers

The following example logs all PerformanceMark objects named "debug-mark".

const debugMarks = performance.getEntriesByName("debug-mark", "mark");
debugMarks.forEach((entry) => {
  console.log(`${entry.name}'s startTime: ${entry.startTime}`);
});

Specifications

Browser compatibility

See also

• Performance.getEntries()
• Performance.getEntriesByType()