The getEntries() method returns an array of all PerformanceEntry objects currently present in the performance timeline.

If you are only interested in performance entries of certain types or that have certain names, see getEntriesByType() and getEntriesByName().

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.

None.

An Array of PerformanceEntry objects. The items will be in chronological order based on the entries' startTime.

Assuming you created your own PerformanceMark and PerformanceMeasure objects at appropriate places in your code, you might want to log all them to the console like this:

// Example markers/measures
performance.mark("login-started");
performance.mark("login-finished");
performance.mark("form-sent");
performance.mark("video-loaded");
performance.measure("login-duration", "login-started", "login-finished");

const entries = performance.getEntries();

entries.forEach((entry) => {
  if (entry.entryType === "mark") {
    console.log(`${entry.name}'s startTime: ${entry.startTime}`);
  }
  if (entry.entryType === "measure") {
    console.log(`${entry.name}'s duration: ${entry.duration}`);
  }
});

• Performance.getEntriesByType()
• Performance.getEntriesByName()