---
title: element.offsetWidth
slug: Web/API/HTMLElement/offsetWidth
translation_of: Web/API/HTMLElement/offsetWidth
---
<p>{{ ApiRef() }}</p>

<h3 id="R.C3.A9sum.C3.A9" name="R.C3.A9sum.C3.A9">Résumé</h3>

<p>Renvoie la largeur totale d'un élément.</p>

<h3 id="Syntaxe" name="Syntaxe">Syntaxe</h3>

<pre class="eval">var <em>offsetWidth</em> = <em>element</em>.offsetWidth;
</pre>

<p><code>offsetWidth</code> est une propriété en lecture seule.</p>

<h3 id="Description" name="Description">Description</h3>

<p>Typiquement, l'attribut <code>offsetWidth</code> est une mesure qui comprend les bordures de l'élément, ses marges internes horizontales (padding), la barre de défilement verticale si présente et affichée, et la largeur CSS de l'élément.</p>

<h3 id="Exemple" name="Exemple">Exemple</h3>

<div id="offsetContainer" style="margin: 26px 0px; background-color: rgb(255, 255, 204); border: 4px dashed black; color: black; position: absolute; left: 260px;">
<div id="idDiv" style="margin: 24px 29px; border: 24px black solid; padding: 0px 28px; width: 199px; height: 102px; overflow: auto; background-color: white; font-size: 13px!important; font-family: Arial, sans-serif;">
<p id="PaddingTopLabel" style="text-align: center; font-style: italic; font-weight: bold; font-size: 13px!important; font-family: Arial, sans-serif; margin: 0px;">padding-top</p>

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<p id="PaddingBottomLabel" style="text-align: center; font-style: italic; font-weight: bold; font-size: 13px!important; font-family: Arial, sans-serif; margin: 0px;">padding-bottom</p>
</div>
<strong style="color: blue; font-family: arial,sans-serif; font-size: 13px!important; font-weight: bold; left: -32px; position: absolute; top: 85px;">Left</strong><strong style="color: blue; font-family: arial,sans-serif; font-size: 13px!important; font-weight: bold; left: 170px; position: absolute; top: -24px;">Top</strong><strong style="color: blue; font-family: arial,sans-serif; font-size: 13px!important; font-weight: bold; left: 370px; position: absolute; top: 85px;">Right</strong><strong style="color: blue; font-family: arial,sans-serif; font-size: 13px!important; font-weight: bold; left: 164px; position: absolute; top: 203px;">Bottom</strong><em>margin-top</em><em>margin-bottom</em><em>border-top</em><em>border-bottom</em><span class="comment">{{ mediawiki.external('if IE') }}&gt;&lt;span id="MrgLeft" style="position: absolute; left: 8px; top: 65px; font: bold 13px Arial, sans-serif !important; writing-mode: tb-rl;"&gt;margin-left&lt;/span&gt;&lt;span id="BrdLeft" style="position: absolute; left: 33px; top: 65px; color: white; font: bold 13px Arial, sans-serif !important; writing-mode: tb-rl;"&gt;border-left&lt;/span&gt;&lt;span id="PdgLeft" style="position: absolute; left: 55px; top: 65px; font: bold 13px Arial, sans-serif !important; writing-mode: tb-rl;"&gt;padding-left&lt;/span&gt;&lt;span id="PdgRight" style="position: absolute; left: 275px; top: 60px; color: black; font: bold 13px Arial, sans-serif !important; writing-mode: tb-rl; white-space: nowrap;"&gt;padding-right&lt;/span&gt;&lt;span id="BrdRight" style="position: absolute; left: 310px; top: 65px; color: white; font: bold 13px Arial, sans-serif !important; writing-mode: tb-rl;"&gt;border-right&lt;/span&gt;&lt;span id="MrgRight" style="position: absolute; left: 340px; top: 65px; font: bold 13px Arial, sans-serif !important; writing-mode: tb-rl;"&gt;margin-right&lt;/span&gt;&lt;!{{ mediawiki.external('endif') }}</span></div>

<p style="margin-top: 270px;"><img alt="Image:offsetWidth.png"></p>

<h3 id="Sp.C3.A9cification" name="Sp.C3.A9cification">Spécification</h3>

<p><code>offsetWidth</code> fait partie du modèle objet <abbr title="Dynamic HyperText Markup Language">DHTML</abbr> de Microsoft Internet Explorer. Elle ne fait partie d'aucune spécification ou recommandation technique du W3C.</p>

<h3 id="Notes" name="Notes">Notes</h3>

<p><code>offsetWidth</code> est une propriété du modèle objet <abbr title="Dynamic HyperText Markup Language">DHTML</abbr> provenant de Microsoft Internet Explorer. On l'appelle parfois la largeur physique ou graphique d'un élément, ou sa largeur « border-box » (bordure et boîte).</p>

<h3 id="R.C3.A9f.C3.A9rences" name="R.C3.A9f.C3.A9rences">Références</h3>

<ul>
 <li><a class="external" href="http://msdn.microsoft.com/workshop/author/dhtml/reference/properties/offsetwidth.asp?frame=true"><em>offsetWidth definition</em> sur MSDN</a></li>
 <li><a class="external" href="http://msdn.microsoft.com/workshop/author/om/measuring.asp"><em>Measuring Element Dimension and Location</em> sur MSDN</a></li>
</ul>

<p>{{ languages( { "en": "en/DOM/element.offsetWidth", "pl": "pl/DOM/element.offsetWidth" } ) }}</p>