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authorPeter Bengtsson <mail@peterbe.com>2020-12-08 14:42:52 -0500
committerPeter Bengtsson <mail@peterbe.com>2020-12-08 14:42:52 -0500
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+---
+title: Operador de Agrupamento
+slug: Web/JavaScript/Reference/Operators/Grouping
+tags:
+ - Expressões Primárias
+ - JavaScript
+ - Operadores
+translation_of: Web/JavaScript/Reference/Operators/Grouping
+---
+<div>
+ {{jsSidebar("Operators")}}</div>
+<h2 id="Sumário">Sumário</h2>
+<p><span class="seoSummary">O operador de agrupamento <code>()</code> controla a precedência e a precedência de avaliação em expressões.</span></p>
+<h2 id="Sintaxe">Sintaxe</h2>
+<pre class="syntaxbox"> ( )</pre>
+<h2 id="Descrição">Descrição</h2>
+<p>O operador de agrupamento consiste em um par de parênteses em volta de uma expressão, ou sub-expressão, para ignorar a <a href="/en-US/docs/Web/JavaScript/Reference/Operators/Operator_Precedence">precedência normal de operadores</a> de modo que expressões com menor precedência possam ser avaliadas antes de uma expressão com maior prioridade.</p>
+<h2 id="Exemplos">Exemplos</h2>
+<p>Ignorando multiplicação e divisão primeiro, então adição e substração para avarliar adição primeiramente.</p>
+<pre class="brush:js">var a = 1;
+var b = 2;
+var c = 3;
+
+// default precedence
+a + b * c // 7
+// evaluated by default like this
+a + (b * c) // 7
+
+// now overriding precedence
+// addition before multiplication
+(a + b) * c // 9
+
+// which is equivalent to
+a * c + b * c // 9
+</pre>
+<h2 id="Especificações">Especificações</h2>
+<table class="standard-table">
+ <tbody>
+ <tr>
+ <th scope="col">Specification</th>
+ <th scope="col">Status</th>
+ <th scope="col">Comment</th>
+ </tr>
+ <tr>
+ <td>ECMAScript 1st Edition.</td>
+ <td>Standard</td>
+ <td>Primeira definição. Implementado no JavaScript 1.0</td>
+ </tr>
+ <tr>
+ <td>{{SpecName('ES5.1', '#sec-11.1.6', 'The Grouping Operator')}}</td>
+ <td>{{Spec2('ES5.1')}}</td>
+ <td> </td>
+ </tr>
+ <tr>
+ <td>{{SpecName('ES6', '#sec-grouping-operator', 'The Grouping Operator')}}</td>
+ <td>{{Spec2('ES6')}}</td>
+ <td> </td>
+ </tr>
+ </tbody>
+</table>
+<h2 id="Compatibilidade">Compatibilidade</h2>
+<p>{{ CompatibilityTable() }}</p>
+<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>{{ CompatVersionUnknown() }}</td>
+ <td>{{ CompatVersionUnknown() }}</td>
+ <td>{{ CompatVersionUnknown() }}</td>
+ <td>{{ CompatVersionUnknown() }}</td>
+ <td>{{ CompatVersionUnknown() }}</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>{{ CompatVersionUnknown() }}</td>
+ <td>{{ CompatVersionUnknown() }}</td>
+ <td>{{ CompatVersionUnknown() }}</td>
+ <td>{{ CompatVersionUnknown() }}</td>
+ <td>{{ CompatVersionUnknown() }}</td>
+ <td>{{ CompatVersionUnknown() }}</td>
+ </tr>
+ </tbody>
+ </table>
+</div>
+<h2 id="See_also" name="See_also">Veja também</h2>
+<ul>
+ <li><a href="/en-US/docs/Web/JavaScript/Reference/Operators/Operator_Precedence">Operator precedence</a></li>
+ <li>{{jsxref("Operators/delete", "delete")}}</li>
+ <li>{{jsxref("Operators/typeof", "typeof")}}</li>
+</ul>