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+---
+title: URL.port
+slug: Web/API/URL/port
+translation_of: Web/API/URL/port
+---
+<div>{{ApiRef("URL API")}}</div>
+
+<div>{{domxref("URL")}} 接口的端口属性是包含了URL的端口号信息的{{domxref("USVString")}}值，如果URL中不包含明确的端口号，这个属性将为<code>''</code>.</div>
+
+<div></div>
+
+<p>{{AvailableInWorkers}}</p>
+
+<h2 id="语法"><strong>语法</strong></h2>
+
+<pre class="syntaxbox"><em>string</em> = <em>object</em>.port;
+<em>object</em>.port = <em>string</em>;
+</pre>
+
+<h3 id="参数">参数</h3>
+
+<p>A {{domxref("USVString")}}.</p>
+
+<h2 id="示例">示例</h2>
+
+<pre class="brush: js">var url = new URL('<span class="message-body-wrapper"><span class="message-flex-body"><span class="devtools-monospace message-body"><span class="cm-string">https://mydomain.com:80/svn/Repos/</span></span></span></span>');
+var result = url.port; // Returns:'80'
+</pre>
+
+<h2 id="规范">规范</h2>
+
+<table class="standard-table">
+ <tbody>
+  <tr>
+   <th scope="col">规范</th>
+   <th scope="col">状态</th>
+   <th scope="col">备注</th>
+  </tr>
+  <tr>
+   <td>{{SpecName('URL', '#dom-url-port', 'URL.port')}}</td>
+   <td>{{Spec2('URL')}}</td>
+   <td>Initial definition.</td>
+  </tr>
+ </tbody>
+</table>
+
+<h2 id="浏览器兼容性">浏览器兼容性</h2>
+
+
+
+<p>{{Compat("api.URL.port")}}</p>
+
+<h2 id="相关链接">相关链接</h2>
+
+<ul>
+ <li>The {{domxref("URL")}} interface it belongs to.</li>
+</ul>