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---
title: onStateChanged
slug: Mozilla/Add-ons/WebExtensions/API/captivePortal/onStateChanged
tags:
- API
- Add-ons
- Extensions
- Non-standard
- Reference
- WebExtensions
- captivePortal
translation_of: Mozilla/Add-ons/WebExtensions/API/captivePortal/onStateChanged
---
<div>{{AddonSidebar()}}</div>
<p>S'allume lorsque l'état de portail captif change.</p>
<h2 id="Syntaxe">Syntaxe</h2>
<pre class="syntaxbox brush:js notranslate">browser.captivePortal.onStateChanged.addListener(callback)
browser.captivePortal.onStateChanged.removeListener(listener)
browser.captivePortal.onStateChanged.hasListener(listener)
</pre>
<p>Les événements ont trois fonctions :</p>
<dl>
<dt><code>addListener(callback)</code></dt>
<dd>Ajoute un auditeur à cet événement.</dd>
<dt><code>removeListener(listener)</code></dt>
<dd>Arrêtez d'écouter cet événement. L'argument de <code>listener</code> est l'auditeur à retirer.</dd>
<dt><code>hasListener(listener)</code></dt>
<dd>Vérifiez si <code>listener</code> est inscrit à cet événement. Renvoie <code>true</code> si c'est un auditeur, sinon <code>false</code>.</dd>
</dl>
<h2 id="Syntaxe_addListener">Syntaxe addListener</h2>
<h3 id="Paramétres">Paramétres</h3>
<dl>
<dt><code>callback</code></dt>
<dd>
<p>Fonction qui est appelée lorsque cet événement se produit. La fonction se voit transmettre les arguments suivants :</p>
<dl class="reference-values">
<dt><code>details</code></dt>
<dd>
<p><code>string</code> L'État portail captif, étant l'un des <code>unknown</code>, <code>not_captive</code>, <code>unlocked_portal</code>, ou <code>locked_portal</code>.</p>
</dd>
</dl>
</dd>
</dl>
<h2 id="Exemples">Exemples</h2>
<p>Gérer un changement de statut de portail captif :</p>
<pre class="brush: js notranslate">function handlePortalStatus(portalstatusInfo) {
console.log("The portal status is now: " + portalstatusInfo.details);
}
browser.captivePortal.onStateChanged.addListener(handlePortalStatus)
</pre>
<p>{{WebExtExamples}}</p>
<h2 id="Compatibilité_du_navigateur">Compatibilité du navigateur</h2>
<p>{{Compat("webextensions.api.captivePortal.onStateChanged")}}</p>
<div class="hidden">
<pre class="notranslate">// Copyright 2015 The Chromium Authors. All rights reserved.
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are
// met:
//
// * Redistributions of source code must retain the above copyright
// notice, this list of conditions and the following disclaimer.
// * Redistributions in binary form must reproduce the above
// copyright notice, this list of conditions and the following disclaimer
// in the documentation and/or other materials provided with the
// distribution.
// * Neither the name of Google Inc. nor the names of its
// contributors may be used to endorse or promote products derived from
// this software without specific prior written permission.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
</pre>
</div>
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