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+---
+title: 电池管理器
+slug: Web/API/BatteryManager/charging
+tags:
+  - 电池 API
+translation_of: Web/API/BatteryManager/charging
+---
+<pre class="syntaxbox">{{APIRef("Battery API")}}</pre>
+
+<p>指示设备电池当前是否正在充电的Boolean值</p>
+
+<h2 id="Syntax_句法">Syntax 句法</h2>
+
+<pre class="syntaxbox">var <em>charging</em> = battery.charging</pre>
+
+<p>返回当前是否正在对 {{domxref("BatteryManager")}} 对象的设备充电，如果正在充电则返回 <code>true</code>，否则返回 <code>false</code>.</p>
+
+<h2 id="Example" name="Example">Example 例子</h2>
+
+<h3 id="HTML_Content_（内容）">HTML Content （内容）</h3>
+
+<pre class="brush: html">&lt;div id="charging"&gt;(charging state unknown)&lt;/div&gt;</pre>
+
+<h3 id="JavaScript_内容">JavaScript 内容</h3>
+
+<pre class="brush: js; highlight:[3]">navigator.getBattery().then(function(battery) {
+
+    var charging = battery.charging;
+
+    document.querySelector('#charging').textContent = charging ;
+});</pre>
+
+<p>{{ EmbedLiveSample('Example', '100%', 30) }}</p>
+
+<h2 id="Specifications_规格">Specifications 规格</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("Battery API")}}</td>
+   <td>{{Spec2("Battery API")}}</td>
+   <td>Initial definition</td>
+  </tr>
+ </tbody>
+</table>
+
+<h2 id="Browser_compatibility浏览器兼容性CompatibilityTable">Browser compatibility浏览器兼容性<span style="color: #3b3c40; font-size: 14px; font-weight: normal; line-height: 1.5;">{{CompatibilityTable}}</span></h2>
+
+<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>Basic support</td>
+   <td>{{CompatChrome(39.0)}}</td>
+   <td>{{CompatGeckoDesktop("10")}} {{property_prefix("moz")}}<br>
+    {{CompatGeckoDesktop("16")}}<sup>[1]</sup><br>
+    {{CompatGeckoDesktop("52")}}<sup>[3]</sup></td>
+   <td>{{CompatNo}}</td>
+   <td>25</td>
+   <td>{{CompatNo}}</td>
+  </tr>
+ </tbody>
+</table>
+</div>
+
+<div id="compat-mobile">
+<table class="compat-table">
+ <tbody>
+  <tr>
+   <th>Feature</th>
+   <th>Android</th>
+   <th>Android Webview</th>
+   <th>Firefox Mobile (Gecko)</th>
+   <th>IE Mobile</th>
+   <th>Opera Mobile</th>
+   <th>Safari Mobile</th>
+   <th>Chrome for Android</th>
+  </tr>
+  <tr>
+   <td>Basic support</td>
+   <td>{{CompatNo}}</td>
+   <td>{{CompatChrome(40.0)}}</td>
+   <td>{{CompatGeckoMobile("10")}} {{property_prefix("moz")}}<br>
+    {{CompatGeckoMobile("16")}}<sup>[1]</sup><br>
+    {{CompatGeckoMobile("52")}}<sup>[3]</sup></td>
+   <td>{{CompatNo}}</td>
+   <td>25<sup>[2]</sup></td>
+   <td>{{CompatNo}}</td>
+   <td>{{CompatChrome(42.0)}}<sup>[2]</sup></td>
+  </tr>
+ </tbody>
+</table>
+</div>
+
+<p>[1] Disabled by default in Firefox 10.0, but can be enabled setting the preference <code>dom.battery.enabled</code> to <code>true</code>. Starting with Firefox 11.0, <code>mozBattery</code> is enabled by default. The Battery API is currently supported on Android, Windows, and Linux with UPower installed. Support for MacOS is available starting with Gecko 18.0 {{geckoRelease("18.0")}}. Firefox also provide support for the deprecated {{domxref("navigator.battery")}}.</p>
+
+<p>[2] Values for {{domxref("BatteryManager.chargingTime")}} and {{domxref("BatteryManager.dischargingTime")}} are always equal to <code>Infinity</code>.</p>
+
+<p>[3] From Firefox 52 onwards, the Battery Status API is only available in chrome/privileged code.</p>
+
+<h2 id="See_also_也可以看看">See also 也可以看看</h2>
+
+<ul>
+ <li>{{domxref("BatteryManager")}}</li>
+ <li>{{domxref("Navigator.getBattery")}}</li>
+</ul>