---
title: SharedWorker.port
slug: Web/API/SharedWorker/port
translation_of: Web/API/SharedWorker/port
---
<div>{{APIRef("Web Workers API")}}</div>

<p>A propriedade <code><strong>port</strong></code> do {{domxref ("SharedWorker")}} retorna um objeto {{domxref ("MessagePort")}} usado para comunicar e controlar o shared worker.</p>

<p> </p>

<h2 id="Sintaxe">Sintaxe</h2>

<pre class="syntaxbox">myWorker.port;</pre>

<h3 id="Valor">Valor</h3>

<p>Um objeto {{domxref("MessagePort")}}.</p>

<h2 id="Exemplo">Exemplo</h2>

<p>O snippet de código a seguir mostra a criação de um objeto SharedWorker usando o construtor {{domxref ("SharedWorker.SharedWorker", "SharedWorker ()")}} . Vários scripts podem acessar o worker através de um objeto do tipo {{domxref ("MessagePort")}} , usando a propriedade SharedWorker.port  — A porta é iniciada usando o método <code>start()</code> .</p>

<pre class="brush: js">var myWorker = new SharedWorker('worker.js');
myWorker.port.start();</pre>

<p>Veja um exemplo completo <a class="external external-icon" href="https://github.com/mdn/simple-shared-worker">Basic shared worker example</a> (<a class="external external-icon" href="http://mdn.github.io/simple-shared-worker/">run shared worker</a>.)</p>

<h2 id="Especificações">Especificações</h2>

<table class="standard-table">
 <tbody>
  <tr>
   <th scope="col">Specification</th>
   <th scope="col">Status</th>
   <th scope="col">Comment</th>
  </tr>
  <tr>
   <td>{{SpecName('HTML WHATWG', "#dom-sharedworker-port", "AbstractWorker.onerror")}}</td>
   <td>{{Spec2('HTML WHATWG')}}</td>
   <td>No change from {{SpecName("Web Workers")}}.</td>
  </tr>
  <tr>
   <td>{{SpecName('Web Workers', "#dom-sharedworker-port", "AbstractWorker.onerror")}}</td>
   <td>{{Spec2('Web Workers')}}</td>
   <td>Initial definition</td>
  </tr>
 </tbody>
</table>

<h2 id="Browser_compatibility">Browser compatibility</h2>

<p>{{CompatibilityTable}}</p>

<div id="compat-desktop">
<table class="compat-table">
 <tbody>
  <tr>
   <th>Feature</th>
   <th>Chrome</th>
   <th>Firefox (Gecko)</th>
   <th>Internet Explorer</th>
   <th>Opera</th>
   <th>Safari</th>
  </tr>
  <tr>
   <td>Support</td>
   <td>{{CompatChrome(4)}}</td>
   <td>{{CompatGeckoDesktop(29.0)}}</td>
   <td>{{CompatNo}}</td>
   <td>{{CompatOpera(10.60)}}</td>
   <td>5<br>
    {{CompatNo}} 6.1</td>
  </tr>
 </tbody>
</table>
</div>

<div id="compat-mobile">
<table class="compat-table">
 <tbody>
  <tr>
   <th>Feature</th>
   <th>Android</th>
   <th>Chrome for Android</th>
   <th>Firefox Mobile (Gecko)</th>
   <th>Firefox OS (Gecko)</th>
   <th>IE Mobile</th>
   <th>Opera Mobile</th>
   <th>Safari Mobile</th>
  </tr>
  <tr>
   <td>Support</td>
   <td>{{CompatNo}}</td>
   <td>{{CompatNo}}</td>
   <td>{{CompatGeckoMobile("33.0")}}</td>
   <td>2.1</td>
   <td>{{CompatNo}}</td>
   <td>11.5</td>
   <td>5.1<br>
    {{CompatNo}} 7.1</td>
  </tr>
 </tbody>
</table>
</div>

<h2 id="See_also">See also</h2>

<ul>
 <li>The {{domxref("SharedWorker")}} interface it belongs to.</li>
</ul>