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---
title: DeviceOrientationEvent
slug: Web/API/DeviceOrientationEvent
translation_of: Web/API/DeviceOrientationEvent
---
<p>{{apiref("Device Orientation Events")}}{{SeeCompatTable}}</p>
<p><code>DeviceOrientationEvent</code> 提供了網頁開發者關於目前瀏覽頁面之裝置的物理旋轉方向資訊。</p>
<div class="warning">
<p><strong>Warning:</strong> Currently, Firefox and Chrome do not handle the coordinates the same way. Take care about this while using them.</p>
</div>
<h2 id="屬性">屬性</h2>
<dl>
<dt>{{domxref("DeviceOrientationEvent.absolute")}} {{readonlyinline}}</dt>
<dd>A boolean that indicates whether or not the device is providing orientation data absolutely.</dd>
<dt>{{domxref("DeviceOrientationEvent.alpha")}} {{readonlyinline}}</dt>
<dd>A number representing the motion of the device around the z axis, express in degrees with values ranging from 0 to 360</dd>
<dt>{{domxref("DeviceOrientationEvent.beta")}} {{readonlyinline}}</dt>
<dd>A number representing the motion of the device around the x axis, express in degrees with values ranging from -180 to 180. This represents a front to back motion of the device.</dd>
<dt>{{domxref("DeviceOrientationEvent.gamma")}} {{readonlyinline}}</dt>
<dd>A number representing the motion of the device around the y axis, express in degrees with values ranging from -90 to 90. This represents a left to right motion of the device.</dd>
</dl>
<h2 id="範例">範例</h2>
<pre class="brush: js">window.addEventListener('deviceorientation', function(event) {
console.log(event.alpha + ' : ' + event.beta + ' : ' + event.gamma);
});</pre>
<h2 id="規範">規範</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="瀏覽器相容性">瀏覽器相容性</h2>
{{Compat("api.DeviceOrientationEvent")}}
<h2 id="參見">參見</h2>
<ul>
<li>{{ event("deviceorientation") }}</li>
<li>{{ domxref("DeviceMotionEvent") }}</li>
<li>{{ event("devicemotion") }}</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>
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