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


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---
title: element.hasChildNodes
slug: Web/API/Node/hasChildNodes
tags:
  - API
  - DOM
  - Enfant
  - Méthodes
  - Noeuds
translation_of: Web/API/Node/hasChildNodes
---
<p>{{APIRef("DOM")}}</p>

<p>La méthode  <code><strong>Node.hasChildNodes()</strong></code> renvoie une valeur <strong>booléenne</strong> indiquant si le {{domxref("Node","noeud")}} actuel possède des <a href="https://developer.mozilla.org/fr/docs/Web/API/Node/childNodes">nœuds enfants</a> ou non.</p>

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

<pre class="eval">resultat =<em>element</em>.hasChildNodes();
</pre>

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

<p>L'exemple suivant supprime le premier noeud enfant à l'intérieur de l'élément avec l'identifiant <code>"foo"</code> si "foo" a des noeuds enfant.</p>

<pre class="brush:js line-numbers  language-js"><code class="language-js"><span class="keyword token">var</span> foo <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">"foo"</span><span class="punctuation token">)</span><span class="punctuation token">;</span>
<span class="keyword token">if</span> <span class="punctuation token">(</span>foo<span class="punctuation token">.</span><span class="function token">hasChildNodes</span><span class="punctuation token">(</span><span class="punctuation token">)</span><span class="punctuation token">)</span> <span class="punctuation token">{</span>
    <span class="comment token">// faire quelque chose avec les 'foo.childNodes'</span>
<span class="punctuation token">}</span></code></pre>

<h2 id="Sp.C3.A9cification" name="Sp.C3.A9cification">Polyfill</h2>

<p> </p>

<pre class="brush:js line-numbers  language-js"><code class="language-js"><span class="punctuation token">;</span><span class="punctuation token">(</span><span class="keyword token">function</span><span class="punctuation token">(</span>prototype<span class="punctuation token">)</span> <span class="punctuation token">{</span>
    prototype<span class="punctuation token">.</span>hasChildNodes <span class="operator token">=</span> prototype<span class="punctuation token">.</span>hasChildNodes <span class="operator token">||</span> <span class="keyword token">function</span><span class="punctuation token">(</span><span class="punctuation token">)</span> <span class="punctuation token">{</span>
        <span class="keyword token">return</span> <span class="operator token">!</span><span class="operator token">!</span><span class="keyword token">this</span><span class="punctuation token">.</span>firstChild<span class="punctuation token">;</span>
    <span class="punctuation token">}</span>
<span class="punctuation token">}</span><span class="punctuation token">)</span><span class="punctuation token">(</span>Node<span class="punctuation token">.</span>prototype<span class="punctuation token">)</span><span class="punctuation token">;</span></code></pre>

<h2 id="Résumé">Résumé</h2>

<p>Il y a différentes façons de déterminer si le noeud a un noeud enfant :</p>

<ul>
 <li>node.hasChildNodes()</li>
 <li>node.firstChild != null (ou juste node.firstChild)</li>
 <li>node.childNodes &amp;&amp; node.childNodes.length (ou node.childNodes.length &gt; 0)</li>
</ul>

<h2 id="Sp.C3.A9cification" name="Sp.C3.A9cification">Spécification</h2>

<ul>
 <li><a href="https://dom.spec.whatwg.org/#dom-node-haschildnodes">WHATWG: hasChildNodes</a></li>
 <li><a class="external external-icon" href="http://www.w3.org/TR/2000/REC-DOM-Level-2-Core-20001113/core.html#ID-810594187">hasChildNodes</a></li>
</ul>

<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>{{CompatVersionUnknown}}</td>
   <td>7.0</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>{{CompatVersionUnknown}}</td>
   <td>{{CompatVersionUnknown}}</td>
   <td>{{CompatVersionUnknown}}</td>
  </tr>
 </tbody>
</table>
</div>

<p> </p>

<h2 id="See_also" name="See_also">Voir aussi</h2>

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

<div class="noinclude"> </div>

<p> </p>