Performance: getEntries() method
Baseline
Widely available
This feature is well established and works across many devices and browser versions. It’s been available across browsers since September 2017.
Note: This feature is available in Web Workers.
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().
Note:
This method does not notify you about new performance entries; you will only get entries that are present in the performance timeline at the time you call this method.
To receive notifications about entries as they become available, use a PerformanceObserver.
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
getEntries()
Parameters
None.
Return value
An Array of PerformanceEntry objects. The items will be in chronological order based on the entries' startTime.
Examples
Logging all performance markers and measures
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}`);
}
});
Specifications
| Specification |
|---|
| Performance Timeline # dom-performance-getentries |
Browser compatibility
| desktop | mobile | server | |||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
getEntries
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Legend
Tip: you can click/tap on a cell for more information.
- Full support
- Full support
- Requires a vendor prefix or different name for use.
- Has more compatibility info.