---
title: WebSocket.url
slug: Web/API/WebSocket/url
tags:
  - API
  - Property
  - Refrence
  - Web API
  - WebSocket
translation_of: Web/API/WebSocket/url
---
<p>{{APIRef("Web Sockets API")}}</p>

<p>The <strong><code>WebSocket.url</code></strong> read-only property returns the absolute URL of the {{domxref("WebSocket")}} as resolved by the constructor.</p>

<p><strong><code>WebSocket.url</code></strong>是一个只读属性，返回值为当构造函数创建{{domxref("WebSocket")}}实例对象时URL的绝对路径。</p>

<h2 id="语法">语法</h2>

<pre class="syntaxbox"><em>var url</em> = aWebSocket.url;</pre>

<p> </p>

<h2 id="返回值">返回值</h2>

<p>A <a href="https://developer.mozilla.org/en-US/docs/Web/API/DOMString" title="DOMString is a UTF-16 String. As JavaScript already uses such strings, DOMString is mapped directly to a String."><code>DOMString</code></a>.</p>

<h2 id="规范">规范</h2>

<table class="standard-table">
 <thead>
  <tr>
   <th scope="col">Specification</th>
   <th scope="col">Status</th>
   <th scope="col">Comment</th>
  </tr>
 </thead>
 <tbody>
  <tr>
   <td>{{SpecName('HTML WHATWG', '#dom-websocket-url', 'WebSocket: url')}}</td>
   <td>{{Spec2('HTML WHATWG')}}</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.WebSocket.url")}}</p>