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---
title: PerformanceLongTaskTiming
slug: Web/API/PerformanceLongTaskTiming
tags:
  - API
  - Interface
  - Long Tasks API
  - PerformanceLongTaskTiming
  - Reference
translation_of: Web/API/PerformanceLongTaskTiming
---
<p>{{SeeCompatTable}}{{APIRef("Long Tasks")}}</p>

<p>L'interface <strong><code>PerformanceLongTaskTiming</code></strong> de <a href="/fr/docs/Web/API/Long_Tasks_API">l'API <i>Long Tasks</i></a> signale les instances de tâches longues.</p>

<p>{{InheritanceDiagram}}</p>

<h2 id="Properties">Propriétés</h2>

<dl>
  <dt><a href="/fr/docs/Web/API/PerformanceLongTaskTiming"><code>PerformanceLongTaskTiming</code></a> <em>lecture seule</em> {{ExperimentalBadge}}</dt>
  <dd>Retourne une séquence d'instances <a href="/fr/docs/Web/API/TaskAttributionTiming"><code>TaskAttributionTiming</code></a>.</dd>
</dl>

<h2 id="Specifications">Spécifications</h2>

<table class="standard-table">
  <thead>
    <tr>
      <th scope="col">Spécification</th>
      <th scope="col">Statut</th>
      <th scope="col">Commentaire</th>
    </tr>
  </thead>
  <tbody>
    <tr>
      <td>{{SpecName('Long Tasks','#sec-PerformanceLongTaskTiming','PerformanceLongTaskTiming')}}</td>
      <td>{{Spec2('Long Tasks')}}</td>
      <td>Définition initiale.</td>
    </tr>
  </tbody>
</table>

<h2 id="Browser_compatibility">Compatibilité des navigateurs</h2>

<p>{{Compat("api.PerformanceLongTaskTiming")}}</p>