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+---
+title: Function.arity
+slug: Web/JavaScript/Reference/Global_Objects/Function/arity
+tags:
+  - Função
+  - JavaScript
+  - Não implementado
+  - Obsoleto
+  - Propriedade
+translation_of: Archive/Web/JavaScript/Function.arity
+---
+<div>{{JSRef("Global_Objects", "Function")}} {{obsolete_header}}</div>
+
+<h2 id="Summary" name="Summary">Resumo</h2>
+
+<p class="note">A propriedade <code><strong>arity</strong></code> é usada para retornar o número de argumentos esperados por uma função, entretanto, ela não existe mais e foi substituida pela propriedade {{jsxref("Function.prototype.length")}}.</p>
+
+<h2 id="Especificações">Especificações</h2>
+
+<p>Implementada no JavaScript 1.2. Depreciada no JavaScript 1.4.</p>
+
+<h2 id="Compatibilidade_com_navegadores">Compatibilidade com navegadores</h2>
+
+<div>{{CompatibilityTable}}</div>
+
+<div id="compat-desktop">
+<table class="compat-table">
+ <tbody>
+  <tr>
+   <th>Feature</th>
+   <th>Chrome</th>
+   <th>Firefox (Gecko)</th>
+   <th>Internet Explorer</th>
+   <th>Opera</th>
+   <th>Safari</th>
+  </tr>
+  <tr>
+   <td>Basic support</td>
+   <td>{{CompatNo}}</td>
+   <td>{{CompatNo}}</td>
+   <td>{{CompatNo}}</td>
+   <td>{{CompatNo}}</td>
+   <td>{{CompatNo}}</td>
+  </tr>
+ </tbody>
+</table>
+</div>
+
+<div id="compat-mobile">
+<table class="compat-table">
+ <tbody>
+  <tr>
+   <th>Feature</th>
+   <th>Android</th>
+   <th>Chrome for Android</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>{{CompatNo}}</td>
+   <td>{{CompatNo}}</td>
+   <td>{{CompatNo}}</td>
+   <td>{{CompatNo}}</td>
+   <td>{{CompatNo}}</td>
+   <td>{{CompatNo}}</td>
+  </tr>
+ </tbody>
+</table>
+</div>
+
+<h2 id="See_also" name="See_also">Veja também</h2>
+
+<ul>
+ <li>{{jsxref("Function.prototype.length")}}</li>
+</ul>