PerformanceObserver.takeRecords()

Baseline Widely available

This feature is well established and works across many devices and browser versions. It’s been available across browsers since September 2015.

La méthode takeRecords() de l'interface PerformanceObserver renvoie la liste actuelle des entrées de performance stockées dans l'observateur de performance, en la vidant.

Syntaxe

js
let performanceEntryList = performanceObserver.takeRecords();

Paramètres

Aucun.

Valeur de retour

Une liste d'objets PerformanceEntry.

Exemple

js
const observer = new PerformanceObserver(function (list, obj) {
  let entries = list.getEntries();
  for (let i = 0; i < entries.length; i++) {
    // Traiter les événements "mark" et "frame"
  }
});
observer.observe({ entryTypes: ["mark", "frame"] });
let records = observer.takeRecords();
console.log(records[0].name);
console.log(records[0].startTime);
console.log(records[0].duration);

Spécifications

Specification
Performance Timeline
# dom-performanceobserver-takerecords

Compatibilité des navigateurs

Report problems with this compatibility data on GitHub
desktopmobileserver
Chrome
Edge
Firefox
Opera
Safari
Chrome Android
Firefox for Android
Opera Android
Safari on iOS
Samsung Internet
WebView Android
WebView on iOS
Deno
Node.js
takeRecords

Legend

Tip: you can click/tap on a cell for more information.

Full support
Full support