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---
title: Window.outerWidth
slug: Web/API/Window/outerWidth
translation_of: Web/API/Window/outerWidth
---
<div>
 {{APIRef}}</div>
<h2 id="Summary" name="Summary">概述</h2>
<p><code>Window.outerWidth</code> 获取浏览器窗口外部的宽度。表示整个浏览器窗口的宽度,包括侧边栏(如果存在)、窗口镶边(window chrome)和调正窗口大小的边框(window resizing borders/handles)。</p>
<p>该属性为只读,没有默认值。</p>
<h2 id="Syntax" name="Syntax">语法</h2>
<pre class="syntaxbox"><var>outWindowWidth</var> = window.outerWidth;
</pre>
<p><code>outWindowWidth</code> 是窗口的外层的宽度。</p>
<h2 id="Notes" name="Notes">备注</h2>
<p>要改变一个窗口的大小,可参考 {{domxref("window.resizeBy()")}}{{domxref("window.resizeTo()")}}</p>
<p>要获取一个窗口的内层宽度(inner width),即页面被展示的区域,请参考 {{domxref("window.innerWidth")}}</p>
<h2 id="浏览器兼容性">浏览器兼容性</h2>
<div>
 {{CompatibilityTable}}</div>
<div id="compat-desktop">
 <table class="compat-table">
  <tbody>
   <tr>
    <th>Feature</th>
    <th>Chrome</th>
    <th>Firefox (Gecko)</th>
    <th>Internet Explorer</th>
    <th>Opera</th>
    <th>Safari</th>
   </tr>
   <tr>
    <td>Basic support</td>
    <td>1</td>
    <td>{{CompatGeckoDesktop(1.0)}}</td>
    <td>9</td>
    <td>9</td>
    <td>3</td>
   </tr>
  </tbody>
 </table>
</div>
<div id="compat-mobile">
 <table class="compat-table">
  <tbody>
   <tr>
    <th>Feature</th>
    <th>Android</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>1</td>
    <td>{{CompatGeckoMobile(1.0)}}</td>
    <td>9</td>
    <td>9</td>
    <td>3</td>
   </tr>
  </tbody>
 </table>
</div>
<h2 id="Specification" name="Specification">规范</h2>
<p>DOM Level 0。不属于任何 W3C 技术规范或推荐。<span class="comment">the To do in Notes</span></p>
<h2 id="相关链接">相关链接</h2>
<ul>
 <li>{{domxref("window.outerHeight")}}, {{domxref("window.innerHeight")}}, {{domxref("window.innerWidth")}}</li>
 <li>{{domxref("window.resizeBy()")}}, {{domxref("window.resizeTo()")}}</li>
</ul>