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+---
+title: element.hasAttribute
+slug: Web/API/Element/hasAttribute
+tags:
+  - API
+  - DOM
+  - Element
+  - Méthode
+  - Reference
+translation_of: Web/API/Element/hasAttribute
+---
+<p>{{APIRef("DOM")}}</p>
+
+<p>La méthode  <strong><code>Element.hasAttribute()</code></strong>  renvoie une <strong>valeur booléenne</strong> indiquant si l'élément courant possède l'attribut spécifié ou non.</p>
+
+<h2 id="Syntaxe" name="Syntaxe">Syntaxe</h2>
+
+<pre class="syntaxbox"><var>var <em>result</em></var> = <em><var>element</var></em>.hasAttribute(<em><var>name</var></em>);
+</pre>
+
+<dl>
+ <dt><code>result</code></dt>
+ <dd>récupère la valeur de retour <code>true</code> ou <code>false</code>.</dd>
+ <dt><code>name</code></dt>
+ <dd>est une chaine de caractères représentant le nom de l'attribut.</dd>
+</dl>
+
+<h2 id="Exemple" name="Exemple">Exemple</h2>
+
+<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">hasAttribute</span><span class="punctuation token">(</span><span class="string token">"bar"</span><span class="punctuation token">)</span><span class="punctuation token">)</span> <span class="punctuation token">{</span>
+    <span class="comment token">// faire quelque chose</span>
+<span class="punctuation token">}</span></code></pre>
+
+<h2 id="Notes" name="Notes">Polyfill</h2>
+
+<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>hasAttribute <span class="operator token">=</span> prototype<span class="punctuation token">.</span>hasAttribute <span class="operator token">||</span> <span class="keyword token">function</span><span class="punctuation token">(</span>name<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="punctuation token">(</span><span class="keyword token">this</span><span class="punctuation token">.</span>attributes<span class="punctuation token">[</span>name<span class="punctuation token">]</span> <span class="operator token">&amp;&amp;</span>
+                  <span class="keyword token">this</span><span class="punctuation token">.</span>attributes<span class="punctuation token">[</span>name<span class="punctuation token">]</span><span class="punctuation token">.</span>specified<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><span class="punctuation token">(</span>Element<span class="punctuation token">.</span>prototype<span class="punctuation token">)</span><span class="punctuation token">;</span></code></pre>
+
+<h2 id="Notes" name="Notes">Notes</h2>
+
+<p>{{DOMAttributeMethods}}</p>
+
+<h2 id="Sp.C3.A9cification" name="Sp.C3.A9cification">Spécification</h2>
+
+<table class="standard-table">
+ <tbody>
+  <tr>
+   <th scope="col">Spécification</th>
+   <th scope="col">Statut</th>
+   <th scope="col">Commentaire</th>
+  </tr>
+  <tr>
+   <td>{{SpecName('DOM WHATWG', '#dom-element-hasattribute', 'Element.hasAttribute()')}}</td>
+   <td>{{Spec2('DOM WHATWG')}}</td>
+   <td>Dans {{SpecName('DOM3 Core')}}, déplacé de {{domxref("Node")}} à {{domxref("Element")}}</td>
+  </tr>
+  <tr>
+   <td>{{SpecName('DOM3 Core', 'core.html#ID-ElHasAttr', 'Element.hasAttribute()')}}</td>
+   <td>{{Spec2('DOM3 Core')}}</td>
+   <td>Pas de changement par rapport à {{SpecName('DOM2 Core')}}</td>
+  </tr>
+  <tr>
+   <td>{{SpecName('DOM2 Core', 'core.html#ID-ElHasAttr', 'Element.hasAttribute()')}}</td>
+   <td>{{Spec2('DOM2 Core')}}</td>
+   <td>Définition initiale.</td>
+  </tr>
+ </tbody>
+</table>
+
+<h2 id="Browser_compatibility">Browser compatibility</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>8.0</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>