files/fr/web/api/node/isequalnode/index.html


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---
title: Node.isEqualNode()
slug: Web/API/Node/isEqualNode
tags:
  - API
  - Comparaison
  - DOM
  - Méthodes
  - Noeuds
translation_of: Web/API/Node/isEqualNode
---
<div>
<div>{{APIRef("DOM")}}</div>
</div>

<p>La méthode <code><strong>Node.isEqualNode()</strong></code> permet de tester l'égalité entre deux éléments du DOM. Deux noeuds sont équivalents s'ils ont le même type, les mêmes caractéristiques de définition (ID, nombre d'enfants et autres), des attributs qui correspondent etc. L'ensemble spécifique de points des données qui doit correspondre varie en fonction des types de nœuds.</p>

<h2 id="Syntax" name="Syntax">Syntaxe</h2>

<pre class="syntaxbox">var <var>isEqualNode</var> = <var>node</var>.isEqualNode(<var>otherNode</var>);
</pre>

<ul>
 <li><code>otherNode</code> : Le noeud à comparer.</li>
</ul>

<h2 id="Exemple">Exemple</h2>

<p>Dans cet exemple, nous créons trois blocs {{HTMLElement("div")}}. Le premier et le troisième ont les mêmes contenus et attributs, alors que le second est différent. Alors, nous éxécutons du JavaScript pour comparer les noeuds en utilisant <code>isEqualNode()</code> et sortons les résultats.</p>

<h3 id="HTML">HTML</h3>

<pre class="brush: html line-numbers  language-html"><code class="language-html"><span class="tag token"><span class="tag token"><span class="punctuation token">&lt;</span>div</span><span class="punctuation token">&gt;</span></span>This is the first element.<span class="tag token"><span class="tag token"><span class="punctuation token">&lt;/</span>div</span><span class="punctuation token">&gt;</span></span>
<span class="tag token"><span class="tag token"><span class="punctuation token">&lt;</span>div</span><span class="punctuation token">&gt;</span></span>This is the second element.<span class="tag token"><span class="tag token"><span class="punctuation token">&lt;/</span>div</span><span class="punctuation token">&gt;</span></span>
<span class="tag token"><span class="tag token"><span class="punctuation token">&lt;</span>div</span><span class="punctuation token">&gt;</span></span>This is the first element.<span class="tag token"><span class="tag token"><span class="punctuation token">&lt;/</span>div</span><span class="punctuation token">&gt;</span></span>

<span class="tag token"><span class="tag token"><span class="punctuation token">&lt;</span>p</span> <span class="attr-name token">id</span><span class="attr-value token"><span class="punctuation token">=</span><span class="punctuation token">"</span>output<span class="punctuation token">"</span></span><span class="punctuation token">&gt;</span></span><span class="tag token"><span class="tag token"><span class="punctuation token">&lt;/</span>p</span><span class="punctuation token">&gt;</span></span></code></pre>

<h3 id="Specification" name="Specification">CSS</h3>

<pre class="brush: css line-numbers  language-css"><code class="language-css"><span class="selector token"><span class="id token">#output</span> </span><span class="punctuation token">{</span>
  <span class="property token">width</span><span class="punctuation token">:</span> <span class="number token">440</span>px<span class="punctuation token">;</span>
  <span class="property token">border</span><span class="punctuation token">:</span> <span class="number token">2</span>px solid black<span class="punctuation token">;</span>
  <span class="property token">border-radius</span><span class="punctuation token">:</span> <span class="number token">5</span>px<span class="punctuation token">;</span>
  <span class="property token">padding</span><span class="punctuation token">:</span> <span class="number token">10</span>px<span class="punctuation token">;</span>
  <span class="property token">margin-top</span><span class="punctuation token">:</span> <span class="number token">20</span>px<span class="punctuation token">;</span>
  <span class="property token">display</span><span class="punctuation token">:</span> block<span class="punctuation token">;</span>
<span class="punctuation token">}</span></code></pre>

<h3 id="JavaScript">JavaScript</h3>

<pre class="brush: js line-numbers  language-js"><code class="language-js"><span class="keyword token">let</span> output <span class="operator token">=</span> document<span class="punctuation token">.</span><span class="function token">getElementById</span><span class="punctuation token">(</span><span class="string token">"output"</span><span class="punctuation token">)</span><span class="punctuation token">;</span>
<span class="keyword token">let</span> divList  <span class="operator token">=</span> document<span class="punctuation token">.</span><span class="function token">getElementsByTagName</span><span class="punctuation token">(</span><span class="string token">"div"</span><span class="punctuation token">)</span><span class="punctuation token">;</span>

output<span class="punctuation token">.</span>innerHTML <span class="operator token">+</span><span class="operator token">=</span> <span class="string token">"div 0 equals div 0: "</span> <span class="operator token">+</span> divList<span class="punctuation token">[</span><span class="number token">0</span><span class="punctuation token">]</span><span class="punctuation token">.</span><span class="function token">isEqualNode</span><span class="punctuation token">(</span>divList<span class="punctuation token">[</span><span class="number token">0</span><span class="punctuation token">]</span><span class="punctuation token">)</span> <span class="operator token">+</span> <span class="string token">"&lt;br/&gt;"</span><span class="punctuation token">;</span>
output<span class="punctuation token">.</span>innerHTML <span class="operator token">+</span><span class="operator token">=</span> <span class="string token">"div 0 equals div 1: "</span> <span class="operator token">+</span> divList<span class="punctuation token">[</span><span class="number token">0</span><span class="punctuation token">]</span><span class="punctuation token">.</span><span class="function token">isEqualNode</span><span class="punctuation token">(</span>divList<span class="punctuation token">[</span><span class="number token">1</span><span class="punctuation token">]</span><span class="punctuation token">)</span> <span class="operator token">+</span> <span class="string token">"&lt;br/&gt;"</span><span class="punctuation token">;</span>
output<span class="punctuation token">.</span>innerHTML <span class="operator token">+</span><span class="operator token">=</span> <span class="string token">"div 0 equals div 2: "</span> <span class="operator token">+</span> divList<span class="punctuation token">[</span><span class="number token">0</span><span class="punctuation token">]</span><span class="punctuation token">.</span><span class="function token">isEqualNode</span><span class="punctuation token">(</span>divList<span class="punctuation token">[</span><span class="number token">2</span><span class="punctuation token">]</span><span class="punctuation token">)</span> <span class="operator token">+</span> <span class="string token">"&lt;br/&gt;"</span><span class="punctuation token">;</span></code></pre>

<h3 id="Résultats">Résultats</h3>

<p>{{ EmbedLiveSample('Example', 480) }}</p>

<h2 id="Specification" name="Specification">Spécifications</h2>

<table class="standard-table">
 <thead>
  <tr>
   <th scope="col">Spécification</th>
   <th scope="col">Statut</th>
   <th scope="col">Commentaire</th>
  </tr>
 </thead>
 <tbody>
  <tr>
   <td>{{SpecName('DOM WHATWG', '#dom-node-isequalnode', 'Node.isEqualNode')}}</td>
   <td>{{Spec2('DOM WHATWG')}}</td>
   <td> </td>
  </tr>
 </tbody>
</table>

<h2 id="Compatibilité_des_navigateurs">Compatibilité des navigateurs</h2>

<p>{{CompatibilityTable}}</p>

<div id="compat-desktop">
<table class="compat-table">
 <tbody>
  <tr>
   <th>Fonctionnalité</th>
   <th>Chrome</th>
   <th>Edge</th>
   <th>Firefox (Gecko)</th>
   <th>Internet Explorer</th>
   <th>Opera</th>
   <th>Safari</th>
  </tr>
  <tr>
   <td>Basic support</td>
   <td>{{CompatVersionUnknown}}</td>
   <td>{{CompatVersionUnknown}}</td>
   <td>{{CompatGeckoDesktop("1.9")}}</td>
   <td>9.0</td>
   <td>{{CompatVersionUnknown}}</td>
   <td>{{CompatVersionUnknown}}</td>
  </tr>
 </tbody>
</table>
</div>

<div id="compat-mobile">
<table class="compat-table">
 <tbody>
  <tr>
   <th>Fonctionnalité</th>
   <th>Android</th>
   <th>Edge</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>{{CompatVersionUnknown}}</td>
   <td>{{CompatVersionUnknown}}</td>
   <td>{{CompatVersionUnknown}}</td>
   <td>{{CompatUnknown}}</td>
   <td>{{CompatUnknown}}</td>
   <td>{{CompatVersionUnknown}}</td>
  </tr>
 </tbody>
</table>
</div>

<h2 id="Voir_aussi">Voir aussi</h2>

<ul>
 <li>{{domxref("Node.isSameNode()")}}</li>
</ul>