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+---
+title: WindowEventHandlers.onlanguagechange
+slug: Web/API/WindowEventHandlers/onlanguagechange
+translation_of: Web/API/WindowEventHandlers/onlanguagechange
+---
+<p>{{APIRef("HTML DOM")}}{{SeeCompatTable}}</p>
+
+<p><code><strong>WindowEventHandlers.onlanguagechange</strong></code> 事件是一个属性，包含待执行的代码。当 {{domxref("Event")}} 类型的 {{event("languagechange")}} 事件被这些接口实现的对象（如 {{domxref("Window")}}、{{domxref("HTMLBodyElement")}} 或者 {{domxref("HTMLIFrameElement")}} 等对象）触发时，该事件属性的代码将被运行。这样的事件在浏览器通知更佳的语言列表已被更新后被触发。关于语言列表的介绍，您可访问：{{domxref("NavigatorLanguage.languages")}}。</p>
+
+<h2 id="语法">语法</h2>
+
+<pre class="eval"><em>object</em>.onlanguagechange = <em>function</em>;
+</pre>
+
+<h3 id="值">值</h3>
+
+<ul>
+ <li><code>function</code> 是用户定义的函数的名字 ，不需要 <code>()</code> 的后缀或者任何形式参数, 或者是匿名函数，例如 <code>function(event) {...}</code>。事件处理程序总是有一个单一的形式参数，包含一个事件，这里有它的类型 {{domxref("Event")}}.</li>
+</ul>
+
+<h2 id="例子">例子</h2>
+
+<pre class="brush: js">window.onlanguagechange = function(ev) { alert("languagechange event detected!"); };
+</pre>
+
+<h2 id="Specifications" name="Specifications">标准</h2>
+
+<table class="standard-table" style="height: 49px; width: 1000px;">
+ <thead>
+  <tr>
+   <th scope="col">标准</th>
+   <th scope="col">状态</th>
+   <th scope="col">备注</th>
+  </tr>
+ </thead>
+ <tbody>
+  <tr>
+   <td>{{ SpecName('HTML WHATWG', '#handler-workerglobalscope-onlanguagechange', 'WindowEventHandler.onlanguagechange') }}</td>
+   <td>{{ Spec2('HTML WHATWG') }}</td>
+   <td>初始版本</td>
+  </tr>
+ </tbody>
+</table>
+
+<h2 id="浏览器兼容性">浏览器兼容性</h2>
+
+<p>{{ CompatibilityTable() }}</p>
+
+<div id="compat-desktop">
+<table class="compat-table">
+ <tbody>
+  <tr>
+   <th>Feature</th>
+   <th>Chrome</th>
+   <th>Firefox (Gecko)</th>
+   <th>Internet Explorer</th>
+   <th>Opera</th>
+   <th>Safari</th>
+  </tr>
+  <tr>
+   <td>基础支持</td>
+   <td>{{ CompatUnknown() }}</td>
+   <td>{{ CompatGeckoDesktop(32.0) }}</td>
+   <td>{{ CompatNo() }}</td>
+   <td>{{ CompatUnknown() }}</td>
+   <td>{{ CompatUnknown() }}</td>
+  </tr>
+ </tbody>
+</table>
+</div>
+
+<div id="compat-mobile">
+<table class="compat-table">
+ <tbody>
+  <tr>
+   <th>Feature</th>
+   <th>Android</th>
+   <th>Chrome for Android</th>
+   <th>Firefox Mobile (Gecko)</th>
+   <th>IE Mobile</th>
+   <th>Opera Mobile</th>
+   <th>Safari Mobile</th>
+  </tr>
+  <tr>
+   <td>基础支持</td>
+   <td>{{ CompatUnknown() }}</td>
+   <td>{{ CompatUnknown() }}</td>
+   <td>{{ CompatGeckoMobile(32.0) }}</td>
+   <td>{{ CompatNo() }}</td>
+   <td>{{ CompatUnknown() }}</td>
+   <td>{{ CompatUnknown() }}</td>
+  </tr>
+ </tbody>
+</table>
+</div>
+
+<h2 id="参见">参见</h2>
+
+<ul>
+ <li>{{event("languagechange")}} 事件和它的类型 {{domxref("Event")}}。</li>
+</ul>