---
title: DeviceMotionEvent.acceleration
slug: Web/API/DeviceMotionEvent/acceleration
tags:
  - API
  - Firefox OS
  - 传感器
  - 运动传感器
  - 需要示例
translation_of: Web/API/DeviceMotionEvent/acceleration
---
<p>{{ ApiRef("Device Orientation Events") }}</p>

<p><span class="short_text" id="result_box" lang="zh-CN">acceleration属性会返回设备的加速度记录（单位：<a href="https://en.wikipedia.org/wiki/Meter_per_second_squared">m / s<sup>2</sup></a>）。</span></p>

<div class="note"><strong>注意:</strong> 如果硬件无法从acceleration数据中移除重力加速度，则该值在{{ domxref("DeviceMotionEvent") }}中可能并不存在，你应当使用{{ domxref("DeviceMotionEvent.accelerationIncludingGravity") }}代替</div>

<h2 id="语法">语法</h2>

<pre class="syntaxbox">var acceleration = <em>instanceOfDeviceMotionEvent</em>.acceleration;
</pre>

<h2 id="值">值</h2>

<p><code>acceleration</code>是一个包括三轴（x、y、z）加速度信息的对象，每个轴都有自己的属性：</p>

<dl>
 <dt><code>x</code></dt>
 <dd><span class="short_text" id="result_box" lang="zh-CN"><span>表示x轴（西到东）上的加速度</span></span></dd>
 <dt><code>y</code></dt>
 <dd><span class="short_text" id="result_box" lang="zh-CN"><span>表示y轴（南到北</span></span><span class="short_text" lang="zh-CN"><span>）上的加速度</span></span></dd>
 <dt><code>z</code></dt>
 <dd><span class="short_text" id="result_box" lang="zh-CN"><span>表示z轴（下到上）上的加速度</span></span></dd>
</dl>

<h2 id="说明">说明</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('Device Orientation')}}</td>
   <td>{{Spec2('Device Orientation')}}</td>
   <td>Initial specification.</td>
  </tr>
 </tbody>
</table>

<h2 id="浏览器兼容性"><span class="short_text" id="result_box" lang="zh-CN"><span>浏览器兼容性</span></span></h2>

{{Compat("api.DeviceMotionEvent.acceleration")}}

<h2 id="推荐浏览">推荐浏览</h2>

<ul>
 <li>{{ domxref("DeviceMotionEvent.accelerationIncludingGravity") }}</li>
 <li>{{ event("devicemotion") }}</li>
 <li>{{ domxref("window.ondevicemotion") }}</li>
 <li>{{ event("deviceorientation") }}</li>
 <li>{{ domxref("DeviceOrientationEvent") }}</li>
 <li><a href="/en-US/docs/WebAPI/Detecting_device_orientation" title="/en-US/docs/WebAPI/Detecting_device_orientation">Detecting device orientation</a></li>
 <li><a href="https://developer.mozilla.org/en/DOM/Orientation_and_motion_data_explained" title="Orientation and motion data explained">Orientation and motion data explained</a></li>
</ul>