---
title: window.screen.availWidth
slug: Web/API/Screen/availWidth
tags:
  - DOM
  - DOM_0
  - Gecko
  - Gecko DOM Reference
  - screen
translation_of: Web/API/Screen/availWidth
---
<div>
 {{ApiRef}}</div>
<h2 id="Summary" name="Summary">概要</h2>
<p>ウィンドウで利用可能な水平空間の大きさをピクセル単位で返します。</p>
<h2 id="Syntax" name="Syntax">構文</h2>
<pre class="syntaxbox"><var>iAvail</var> = window.screen.availWidth</pre>
<h2 id="Example" name="Example">例</h2>
<pre class="brush:js">var screenAvileWidth = window.screen.availWidth;

console.log(screenAvileWidth);</pre>
<h2 id="Specification" name="Specification">仕様</h2>
<p>{{DOM0}}</p>