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authorPeter Bengtsson <mail@peterbe.com>2020-12-08 14:40:17 -0500
committerPeter Bengtsson <mail@peterbe.com>2020-12-08 14:40:17 -0500
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+---
+title: Window.controllers
+slug: Web/API/Window/controllers
+tags:
+ - API
+ - HTML DOM
+ - NeedsCompatTable
+ - NeedsExample
+ - NeedsMarkupWork
+ - XUL
+ - 参考
+ - 属性
+ - 窗口
+ - 非标准
+translation_of: Web/API/Window/controllers
+---
+<div>{{APIRef}}{{non-standard_header}}</div>
+
+<p>{{domxref("Window")}} 接口的 <code><strong>controllers</strong></code> 属性返回 chorme 窗口的 XUL 控制器。</p>
+
+<h2 id="语法">语法</h2>
+
+<pre class="syntaxbox notranslate"><var>controllers</var> = <em>window</em>.controllers
+</pre>
+
+<ul>
+ <li><code>controllers</code> 是一个类型为 <a href="/en-US/docs/XULControllers"><code>XULControllers</code></a>(<a href="/en-US/docs/XPCOM_Interface_Reference/nsIControllers"><code>nsIControllers</code></a>)的对象。</li>
+</ul>
+
+<h2 id="规范">规范</h2>
+
+<p>XUL-专有属性,不属于任何规范。</p>
+
+<div class="note">
+<p>默认情况下,窗口的控制器包含支持全局窗口命令的代码。</p>
+
+<p>chrome 代码可以添加控制器(与 globalOverlay.js 中的 <code>goDoCommand</code> 和 <code>goUpdateCommand</code> 函数配合使用)。</p>
+
+<p>然而,浏览器窗口被关闭时,我们必须手动删除这些添加的控制器,因为浏览器并不会自动完成这些操作。</p>
+
+<p>如果有忘记删除的控制器,则会导致错误:</p>
+<a class="link-https" href="https://bugzilla.mozilla.org/show_bug.cgi?id=415775">bug 415775</a>:
+
+<pre class="bz_comment_text notranslate" id="comment_text_0">ASSERTION: XPConnect is being called on a scope without a 'Components' property!</pre>
+</div>