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+---
+title: Navigator.permissions
+slug: Web/API/Navigator/permissions
+tags:
+ - API
+ - Permissions
+ - 属性
+translation_of: Web/API/Navigator/permissions
+---
+<p>{{APIRef("HTML DOM")}}{{SeeCompatTable}}</p>
+
+<p><code><strong>permissions</strong></code> 是 <code><strong>Navigator</strong></code> 读属性,返回一个可用于查询或更新某些APIs(由<a href="/en-US/docs/Web/API/Permissions_API">Permissions API</a>覆盖)的权限状态的对象。</p>
+
+<h2 id="语法">语法</h2>
+
+<pre class="syntaxbox"><em>permissionsObj</em> = <em>globalObj</em>.navigator.permissions
+</pre>
+
+<h2 id="值">值</h2>
+
+<p>一个 {{domxref("Permissions")}} 对象。</p>
+
+<h2 id="例子">例子</h2>
+
+<pre class="brush: js">navigator.permissions.query({name:'geolocation'}).then(function(result) {
+  if (result.state === 'granted') {
+    showMap();
+  } else if (result.state === 'prompt') {
+    showButtonToEnableMap();
+  }
+  // 如果被拒绝,请不要做任何操作。
+});
+</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('Permissions API')}}</td>
+ <td>{{Spec2('Permissions API')}}</td>
+ <td>初始化定义</td>
+ </tr>
+ </tbody>
+</table>
+
+<h2 id="浏览器支持">浏览器支持</h2>
+
+<div>{{ CompatibilityTable() }}</div>
+
+<div id="compat-desktop">
+<table class="compat-table">
+ <tbody>
+ <tr>
+ <th>功能</th>
+ <th>Chrome</th>
+ <th>Firefox (Gecko)</th>
+ <th>Internet Explorer</th>
+ <th>Opera</th>
+ <th>Safari (WebKit)</th>
+ </tr>
+ <tr>
+ <td>基础支持</td>
+ <td>{{CompatChrome(43.0)}}</td>
+ <td>{{CompatGeckoDesktop(46)}}</td>
+ <td>{{CompatUnknown()}}</td>
+ <td>{{CompatUnknown()}}</td>
+ <td>{{CompatUnknown()}}</td>
+ </tr>
+ </tbody>
+</table>
+</div>
+
+<div id="compat-mobile">
+<table class="compat-table">
+ <tbody>
+ <tr>
+ <th>功能</th>
+ <th>Android</th>
+ <th>Android Webview</th>
+ <th>Firefox Mobile (Gecko)</th>
+ <th>Firefox OS</th>
+ <th>IE Phone</th>
+ <th>Opera Mobile</th>
+ <th>Safari Mobile</th>
+ <th>Chrome for Android</th>
+ </tr>
+ <tr>
+ <td>基础支持</td>
+ <td>{{CompatNo()}}</td>
+ <td>{{CompatChrome(43.0)}}</td>
+ <td>{{CompatGeckoMobile(46)}}</td>
+ <td>{{CompatUnknown()}}<sup>[1]</sup></td>
+ <td>{{CompatUnknown()}}</td>
+ <td>{{CompatUnknown()}}</td>
+ <td>{{CompatUnknown()}}</td>
+ <td>{{CompatChrome(43.0)}}</td>
+ </tr>
+ </tbody>
+</table>
+</div>
+
+<p>[1] Firefox OS 现在采用自己的具有特殊工作方式的 Permissions API:参见  <a href="/en-US/docs/Web/API/Permissions_API_(Firefox_OS)">Permissions API (Firefox OS)</a>.</p>
+
+<h2 id="See_also" name="See_also">参见</h2>
+
+<ul>
+ <li><a href="/en-US/docs/Web/API/Permissions_API">Permissions API</a></li>
+ <li>{{domxref("Navigator")}}</li>
+</ul>