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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>
<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>
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