---
title: DeviceOrientationEvent.gamma
slug: Web/API/DeviceOrientationEvent/gamma
translation_of: Web/API/DeviceOrientationEvent/gamma
---
<p>{{ apiref("Device Orientation Events") }}</p>

<p>返回设备旋转时Y轴的值;<font><font>即，多少度，介于之间</font></font><code>-90</code><font><font>和</font></font><code>90</code><font><font>，通过该装置被接通向左或向右。</font><font>见</font></font><a href="https://developer.mozilla.org/en/DOM/Orientation_and_motion_data_explained" title="取向和运动数据解释"><font><font>方向和运动数据解释</font></font></a><font><font>的细节。</font></font></p>

<h2 id="Syntax">Syntax</h2>

<pre class="syntaxbox">var gamma = <em>orientationEvent</em>.gamma;
</pre>

<h2 id="Specifications">Specifications</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><a href="https://w3c.github.io/deviceorientation/spec-source-orientation.html" hreflang="en" lang="en" title="“设备方向事件”规范"><font><font>设备方向事件</font></font></a></td>
   <td>{Spec2('Device Orientation')}}</td>
   <td>Initial specification.</td>
  </tr>
 </tbody>
</table>

<h2 id="Browser_compatibility">Browser compatibility</h2>

<p>{{CompatibilityTable}}</p>

<div id="compat-desktop">
<table class="compat-table">
 <tbody>
  <tr>
   <th>Feature</th>
   <th>Chrome</th>
   <th>Edge</th>
   <th>Firefox (Gecko)</th>
   <th>Internet Explorer</th>
   <th>Opera</th>
   <th>Safari (WebKit)</th>
  </tr>
  <tr>
   <td>Basic support</td>
   <td>7.0</td>
   <td>{{CompatVersionUnknown}}</td>
   <td>6 [1]</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>Feature</th>
   <th>Android</th>
   <th>Edge</th>
   <th>Firefox Mobile (Gecko)</th>
   <th>IE Mobile</th>
   <th>Opera Mobile</th>
   <th>Safari Mobile</th>
  </tr>
  <tr>
   <td>Basic support</td>
   <td>3.0</td>
   <td>{{CompatVersionUnknown}}</td>
   <td>6 [1]</td>
   <td>{{CompatNo}}</td>
   <td>{{CompatNo}}</td>
   <td>4.2</td>
  </tr>
 </tbody>
</table>
</div>

<p><font><font>[1]火狐3.6，图4和5支撑</font></font><a href="https://developer.mozilla.org/en-US/DOM/MozOrientation"><font><font>mozOrientation</font></font></a><font><font>而不是标准</font></font><code>DeviceOrientationEvent</code><font><font>接口</font></font></p>

<h2 id="See_also">See also</h2>

<ul>
 <li>{{ domxref("DeviceOrientationEvent") }}</li>
 <li><a href="/en/Detecting_device_orientation" title="Detecting device orientation">Detecting device orientation</a></li>
 <li><a href="/en/DOM/Orientation_and_motion_data_explained" title="Orientation and motion data explained">Orientation and motion data explained</a></li>
 <li>{{ domxref("window.ondeviceorientation") }}</li>
 <li>{{ event("deviceorientation") }}</li>
</ul>