From 33058f2b292b3a581333bdfb21b8f671898c5060 Mon Sep 17 00:00:00 2001
From: Peter Bengtsson <mail@peterbe.com>
Date: Tue, 8 Dec 2020 14:40:17 -0500
Subject: initial commit

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+---
+title: MouseEvent.screenX
+slug: Web/API/MouseEvent/screenX
+tags:
+  - API
+  - MouseEvent
+  - Property
+  - events
+  - 事件
+  - 参考
+  - 属性
+  - 鼠标
+  - 鼠标事件
+translation_of: Web/API/MouseEvent/screenX
+---
+<p>{{APIRef("DOM Events")}}</p>
+
+<p><span class="seoSummary"> <strong><code>screenX</code></strong> 是 {{domxref("MouseEvent")}} 的只读属性，提供鼠标在全局（屏幕）中的水平坐标（偏移量）。</span></p>
+
+<h2 id="语法">语法</h2>
+
+<pre class="syntaxbox notranslate">var <em>pixelNumber</em> = <em>instanceOfMouseEvent</em>.screenX
+</pre>
+
+<h3 id="返回值">返回值</h3>
+
+<p>一个双精度浮点值。早期版本的规范将该值定义为整数值的像素数。有关详细信息，请参见浏览器兼容性部分。</p>
+
+<h2 id="示例">示例</h2>
+
+<p>这个例子展示了当触发 {{Event("mousemove")}} 事件时鼠标的坐标。</p>
+
+<h4 id="HTML">HTML</h4>
+
+<pre class="notranslate">&lt;p&gt;Move your mouse to see its position.&lt;/p&gt;
+&lt;p id="screen-log"&gt;&lt;/p&gt;</pre>
+
+<h4 id="JavaScript">JavaScript</h4>
+
+<pre class="notranslate">let screenLog = document.querySelector('#screen-log');
+document.addEventListener('mousemove', logKey);
+
+function logKey(e) {
+  screenLog.innerText = `
+    Screen X/Y: ${e.screenX}, ${e.screenY}
+    Client X/Y: ${e.clientX}, ${e.clientY}`;
+}</pre>
+
+<h4 id="结果">结果</h4>
+
+<p><iframe class="live-sample-frame sample-code-frame" frameborder="0" id="frame_Example" src="https://mdn.mozillademos.org/en-US/docs/Web/API/MouseEvent/screenX$samples/Example?revision=1510648"></iframe></p>
+
+<h2 id="规范">规范</h2>
+
+<table class="standard-table">
+ <tbody>
+  <tr>
+   <th scope="col">规范</th>
+   <th scope="col">状态</th>
+   <th scope="col">注释</th>
+  </tr>
+  <tr>
+   <td>{{SpecName('CSSOM View','#dom-mouseevent-screenx', 'screenX')}}</td>
+   <td>{{Spec2('CSSOM View')}}</td>
+   <td>Redefines {{domxref("MouseEvent")}} from long to double. </td>
+  </tr>
+  <tr>
+   <td>{{SpecName('DOM3 Events','#widl-MouseEvent-screenX','MouseEvent.screenX')}}</td>
+   <td>{{Spec2('DOM3 Events')}}</td>
+   <td>No change from {{SpecName('DOM2 Events')}}.</td>
+  </tr>
+  <tr>
+   <td>{{SpecName('DOM2 Events','#Events-MouseEvent','MouseEvent.sceenX')}}</td>
+   <td>{{Spec2('DOM2 Events')}}</td>
+   <td>Initial definition</td>
+  </tr>
+ </tbody>
+</table>
+
+<h2 id="浏览器兼容性">浏览器兼容性</h2>
+
+<p>{{Compat("api.MouseEvent.screenX")}}</p>
+
+<h2 id="参见"><span>参见</span></h2>
+
+<div id="compat-mobile"></div>
+
+<ul>
+ <li>{{ domxref("MouseEvent") }}</li>
+ <li>{{ domxref("MouseEvent.screenY","screenY") }}</li>
+ <li>{{ domxref("MouseEvent.clientX","clientX") }} / {{ domxref("MouseEvent.clientY", "clientY") }}</li>
+</ul>
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