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---
title: 'Location: host'
slug: Web/API/Location/host
translation_of: Web/API/Location/host
---
<div>{{ApiRef("Location")}}</div>
<p>{{domxref("Location")}} 接口的 <strong><code>host</code></strong> 属性是包含了主机的一段 {{domxref("USVString")}}，其中包含：主机名，如果 URL 的端口号是非空的，还会跟上一个 <code>':'</code> ，最后是 URL 的端口号。</p>
<h2 id="Syntax">Syntax</h2>
<pre class="syntaxbox notranslate"><em>string</em> = <em>object</em>.host;
<em>object.<code>host</code></em> = <em>string</em>;
</pre>
<h2 id="Examples">Examples</h2>
<pre class="brush: js notranslate">var anchor = document.createElement("a");
anchor.href = "https://developer.mozilla.org/en-US/Location.host"
anchor.host == "developer.mozilla.org"
anchor.href = "https://developer.mozilla.org:443/en-US/Location.host"
anchor.host == "developer.mozilla.org"
// 这里 <code>host </code>中没有包含端口号，因为 443 是 https协议的默认端口号
anchor.href = "https://developer.mozilla.org:4097/en-US/Location.host"
anchor.host == "developer.mozilla.org:4097"
</pre>
<h2 id="Specifications">Specifications</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-location-host', 'host')}}</td>
<td>{{Spec2('HTML WHATWG')}}</td>
<td>Initial definition</td>
</tr>
</tbody>
</table>
<h2 id="Browser_compatibility">Browser compatibility</h2>
<p>{{Compat("api.Location.host")}}</p>
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