---
title: tabs.connect()
slug: Mozilla/Add-ons/WebExtensions/API/tabs/connect
tags:
  - API
  - Add-ons
  - Extensions
  - Méthode
  - Non-standard
  - Reference
  - WebExtensions
  - connect
  - tabs
translation_of: Mozilla/Add-ons/WebExtensions/API/tabs/connect
---
<div>{{AddonSidebar()}}</div>

<p>Appelez cette fonction pour configurer une connexion entre les scripts d'arrière-plan de l'extension (ou d'autres scripts privilégiés, tels que les scripts d'arrière-plan de l'extrension (ou d'autres scripts privilégiés, tels que les scripts de pages d'options) et les <a href="/en-US/docs/Mozilla/Add-ons/WebExtensions/Content_scripts">scripts de contenu</a> appartenant à cette extension et s'exécutant dans l'onglet spécifié. Cette fonction renvoie un objet {{WebExtAPIRef("runtime.Port")}}.</p>

<p>Lorsque cela est appelée, l'événement {{WebExtAPIRef('runtime.onConnect')}} est déclenché dans tout script de contenu appartenant à cette extension qui s'exécute dans l'onglet spécifié. L'écouteur d'événement recevra un autre objet  {{WebExtAPIRef("runtime.Port")}}. Les deux parties peuvent ensuite utiliser les objets <code>Port</code> pour échanger des messages.</p>

<p>Pour plus de détails, voir <a href="/en-US/Add-ons/WebExtensions/Content_scripts#Connection-based_messaging">connection-based messaging</a>.</p>

<h2 id="Syntax">Syntax</h2>

<pre class="syntaxbox brush:js">browser.tabs.connect(
  tabId,      // integer
  connectInfo // optional object
)
</pre>

<h3 id="Parameters">Parameters</h3>

<dl>
 <dt><code>tabId</code></dt>
 <dd><code>integer</code>. ID of the tab whose content scripts we want to connect to.</dd>
 <dt><code>connectInfo</code>{{optional_inline}}</dt>
 <dd><code>object</code>.
 <dl class="reference-values">
  <dt><code>name</code>{{optional_inline}}</dt>
  <dd><code>string</code>. Will be passed into {{WebExtAPIRef("runtime.onConnect")}} event listeners in content scripts belonging to this extension and running in the specified tab.</dd>
  <dt><code>frameId</code>{{optional_inline}}</dt>
  <dd><code>integer</code>. Open a port to a specific frame identified by <code>frameId</code> instead of all frames in the tab.</dd>
 </dl>
 </dd>
</dl>

<h3 id="Return_value">Return value</h3>

<p>{{WebExtAPIRef('runtime.Port')}}. A port that can be used to communicate with the content scripts running in the specified tab.</p>

<h2 id="Examples">Examples</h2>

<p>In this example a background script listens for a click on a <a href="/en-US/Add-ons/WebExtensions/Anatomy_of_a_WebExtension#Browser_actions_2">browser action</a>, then connects to the currently active tab, then sends a message using the <code>Port</code> that's returned from <code>connect()</code>:</p>

<pre class="brush: js">function connectToTab(tabs) {
  if (tabs.length &gt; 0) {
    var examplePort = browser.tabs.connect(
      tabs[0].id,
      {name: "tabs-connect-example"}
    );
    examplePort.postMessage({greeting: "Hi from background script"});
  }
}

function onError(error) {
  console.log(`Error: ${error}`);
}

browser.browserAction.onClicked.addListener(function() {
  var gettingActive = browser.tabs.query({
    currentWindow: true, active: true
  });
  gettingActive.then(connectToTab, onError);
});
</pre>

<p>{{WebExtExamples}}</p>

<h2 id="Compatibilité_du_navigateur">Compatibilité du navigateur</h2>

<p>{{Compat("webextensions.api.tabs.connect")}}</p>

<div class="note"><strong>Remerciements :</strong>

<p>Cette API est basée sur l'API Chromium <a href="https://developer.chrome.com/extensions/tabs#method-executeScript"><code>chrome.tabs</code></a>. Cette documentation est dérivée de <a href="https://chromium.googlesource.com/chromium/src/+/master/chrome/common/extensions/api/tabs.json"><code>tabs.json</code></a> dans le code de Chromium code.</p>

<p>Les données de compatibilité relatives à Microsoft Edge sont fournies par Microsoft Corporation et incluses ici sous la licence Creative Commons Attribution 3.0 pour les États-Unis.</p>
</div>

<div class="hidden">
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