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authorPeter Bengtsson <mail@peterbe.com>2020-12-08 14:40:17 -0500
committerPeter Bengtsson <mail@peterbe.com>2020-12-08 14:40:17 -0500
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+---
+title: MouseEvent.mozInputSource
+slug: Web/API/MouseEvent/mozInputSource
+tags:
+ - API
+translation_of: Web/API/MouseEvent/mozInputSource
+---
+<p>{{ APIRef() }}</p>
+
+<p>{{ gecko_minversion_header("2.0") }}</p>
+
+<p>{{ Non-standard_header() }}</p>
+
+<p>{{domxref("MouseEvent")}}中的<strong><code>MouseEvent.mozInputSource</code></strong>是只读属性,它提供触发事件的设备信息。例如,当一个鼠标事件发生时,你能根据<strong><code>MouseEvent.mozInputSource</code></strong>属性判断该事件是由鼠标还是由触屏设备触发的(这将影响到你对于事件发生坐标解释的精确度)。</p>
+
+<h2 id="Syntax" name="Syntax">语法</h2>
+
+<pre class="syntaxbox"><em>var source</em> = event.mozInputSource;</pre>
+
+<h3 id="值">值</h3>
+
+<p>下列值都是合法的</p>
+
+<table class="standard-table">
+ <tbody>
+ <tr>
+ <th>常量名称</th>
+ <th>值</th>
+ <th>描述</th>
+ </tr>
+ <tr>
+ <td><code>MOZ_SOURCE_UNKNOWN</code></td>
+ <td>0</td>
+ <td>该事件是由未知设备触发的。</td>
+ </tr>
+ <tr>
+ <td><code>MOZ_SOURCE_MOUSE</code></td>
+ <td>1</td>
+ <td>该事件是由鼠标(或类似的设备)触发的。</td>
+ </tr>
+ <tr>
+ <td><code>MOZ_SOURCE_PEN</code></td>
+ <td>2</td>
+ <td>该事件是由触屏笔在写字板上触发的。</td>
+ </tr>
+ <tr>
+ <td><code>MOZ_SOURCE_ERASER</code></td>
+ <td>3</td>
+ <td>该事件是由触屏橡皮擦在写字板上触发的。</td>
+ </tr>
+ <tr>
+ <td><code>MOZ_SOURCE_CURSOR</code></td>
+ <td>4</td>
+ <td>该事件是由指针触发的。</td>
+ </tr>
+ <tr>
+ <td><code>MOZ_SOURCE_TOUCH</code></td>
+ <td>5</td>
+ <td>该事件是在触屏设备上触发的。</td>
+ </tr>
+ <tr>
+ <td><code>MOZ_SOURCE_KEYBOARD</code></td>
+ <td>6</td>
+ <td>该事件是由键盘触发的。</td>
+ </tr>
+ </tbody>
+</table>
+
+<h2 id="Specification" name="Specification">详述</h2>
+
+<p>无</p>