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+---
+title: Precedência de Operadores
+slug: Web/JavaScript/Reference/Operators/Operator_Precedence
+tags:
+  - JavaScript
+  - precedência de operadores
+translation_of: Web/JavaScript/Reference/Operators/Operator_Precedence
+---
+<div>
+<div>{{jsSidebar("Operators")}}</div>
+</div>
+
+<h2 id="Resumo">Resumo</h2>
+
+<p><span class="seoSummary">A precedência de operadores determina a ordem em que os operadores são processados. Operadores com maior precedência são processados primeiro.</span></p>
+
+<p>Um exe<span style="line-height: 1.5;">mplo simples:</span></p>
+
+<pre>3 + 4 * 5 // returns 23
+</pre>
+
+<p>O operador de multiplicação ("<code>*</code>") tem maior precedência que o operador de adição ("<code>+</code>") e por isso será executado primeiro.</p>
+
+<h2 id="Associativity" name="Associativity">Associatividade</h2>
+
+<p>Associatividade determina a ordem em que operadores da mesma precedência são processados. Por exemplo, considere a expressão:</p>
+
+<pre>a OP b OP c
+</pre>
+
+<p>Associatividade à esquerda (esquerda para direita) significa que a expressão será processada como <code>(a OP b) OP c</code>, enquanto associatividade à direita (direita para esquerda) significa que será interpretada como <code>a OP (b OP c)</code>. Operadores de atribuição são associativos à direita, então você pode escrever:</p>
+
+<pre>a = b = 5; 5 = b = a
+</pre>
+
+<p>com o resultado esperado que <code>a</code> e <code>b</code> tenham o valor 5. Isto é porque o operador de atribuição retorna o valor que ele atribuiu. Primeiro, <code>b</code> é definido com o valor 5. Então <code>a</code> é definido com o valor de <code>b</code>.</p>
+
+<h2 id="Table" name="Table">Tabela</h2>
+
+<p>A tabela seguinte está ordenada da mais alta (20) para a mais baixa (0) precedência.</p>
+
+<table class="fullwidth-table">
+ <tbody>
+  <tr>
+   <th>Precedência</th>
+   <th>Tipo do Operador</th>
+   <th>Associatividade</th>
+   <th>Operadores individuais</th>
+  </tr>
+  <tr>
+   <td>20</td>
+   <td><a href="/en-US/docs/Web/JavaScript/Reference/Operators/Grouping">Agrupamento</a></td>
+   <td>n/a</td>
+   <td><code>( … )</code></td>
+  </tr>
+  <tr>
+   <td rowspan="3">19</td>
+   <td><a href="https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Operators/Property_Accessors#Dot_notation">Acesso a Membro</a></td>
+   <td>esquerda para direita</td>
+   <td><code>… . …</code></td>
+  </tr>
+  <tr>
+   <td><a href="https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Operators/Property_Accessors#Dot_notation">Acesso a Membro Computado</a></td>
+   <td>esquerda para direita</td>
+   <td><code>… [ … ]</code></td>
+  </tr>
+  <tr>
+   <td><a href="/en-US/docs/JavaScript/Reference/Operators/Special/new" title="JavaScript/Reference/Operators/Special_Operators/new_Operator">new</a> (com lista de argumentos)</td>
+   <td>n/a</td>
+   <td><code>new … ( … )</code></td>
+  </tr>
+  <tr>
+   <td rowspan="2">18</td>
+   <td><a href="/en-US/docs/Web/JavaScript/Guide/Functions" title="JavaScript/Reference/Operators/Special_Operators/function_call">Chamada a Função</a></td>
+   <td>esquerda para direita</td>
+   <td><code>… ( <var>… </var>)</code></td>
+  </tr>
+  <tr>
+   <td><a href="/en-US/docs/Web/JavaScript/Reference/Operators/new" title="JavaScript/Reference/Operators/Special_Operators/new_Operator">new</a> (sem lista de argumentos)</td>
+   <td>direita para esquerda</td>
+   <td><code>new …</code></td>
+  </tr>
+  <tr>
+   <td rowspan="2">17</td>
+   <td><a href="/en-US/docs/Web/JavaScript/Reference/Operators/Arithmetic_Operators#Increment" title="JavaScript/Reference/Operators/Arithmetic_Operators">Incremento Pós-fixado</a></td>
+   <td>n/a</td>
+   <td><code>… ++</code></td>
+  </tr>
+  <tr>
+   <td><a href="/en-US/docs/Web/JavaScript/Reference/Operators/Arithmetic_Operators#Decrement" title="JavaScript/Reference/Operators/Arithmetic_Operators">Decremento Pós-fixado</a></td>
+   <td>n/a</td>
+   <td><code>… --</code></td>
+  </tr>
+  <tr>
+   <td rowspan="9">16</td>
+   <td><a href="/en-US/docs/Web/JavaScript/Reference/Operators/Logical_Operators#Logical_NOT" title="JavaScript/Reference/Operators/Logical_Operators">NÃO lógico</a></td>
+   <td>direita para esquerda</td>
+   <td><code>! …</code></td>
+  </tr>
+  <tr>
+   <td><a href="/en-US/docs/Web/JavaScript/Reference/Operators/Bitwise_Operators#Bitwise_NOT" title="JavaScript/Reference/Operators/Bitwise_Operators">NÃO bit-a-bit</a></td>
+   <td>direita para esquerda</td>
+   <td><code>~ …</code></td>
+  </tr>
+  <tr>
+   <td><a href="/en-US/docs/Web/JavaScript/Reference/Operators/Arithmetic_Operators#Unary_plus" title="JavaScript/Reference/Operators/Arithmetic_Operators">Positivo Unário</a></td>
+   <td>direita para esquerda</td>
+   <td><code>+ …</code></td>
+  </tr>
+  <tr>
+   <td><a href="/en-US/docs/Web/JavaScript/Reference/Operators/Arithmetic_Operators#Unary_negation" title="JavaScript/Reference/Operators/Arithmetic_Operators">Negativo Unário</a></td>
+   <td>direita para esquerda</td>
+   <td><code>- …</code></td>
+  </tr>
+  <tr>
+   <td><a href="/en-US/docs/Web/JavaScript/Reference/Operators/Arithmetic_Operators#Increment" title="JavaScript/Reference/Operators/Arithmetic_Operators">Incremento Pré-fixado</a></td>
+   <td>direita para esquerda</td>
+   <td><code>++ …</code></td>
+  </tr>
+  <tr>
+   <td><a href="/en-US/docs/Web/JavaScript/Reference/Operators/Arithmetic_Operators#Decrement" title="JavaScript/Reference/Operators/Arithmetic_Operators">Decremento Pré-fixado</a></td>
+   <td>direita para esquerda</td>
+   <td><code>-- …</code></td>
+  </tr>
+  <tr>
+   <td><a href="/en-US/docs/Web/JavaScript/Reference/Operators/typeof" title="JavaScript/Reference/Operators/Special_Operators/typeof_Operator">typeof</a></td>
+   <td>direita para esquerda</td>
+   <td><code>typeof …</code></td>
+  </tr>
+  <tr>
+   <td><a href="/en-US/docs/Web/JavaScript/Reference/Operators/void" title="JavaScript/Reference/Operators/Special_Operators/void_Operator">void</a></td>
+   <td>direita para esquerda</td>
+   <td><code>void …</code></td>
+  </tr>
+  <tr>
+   <td><a href="/en-US/docs/Web/JavaScript/Reference/Operators/delete" title="JavaScript/Reference/Operators/Special_Operators/delete_Operator">delete</a></td>
+   <td>direita para esquerda</td>
+   <td><code>delete …</code></td>
+  </tr>
+  <tr>
+   <td>15</td>
+   <td>
+    <p><a href="https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Operators/Arithmetic_Operators#Exponentiation">Exponenciação</a></p>
+   </td>
+   <td>direita para esquerda</td>
+   <td>… ** …</td>
+  </tr>
+  <tr>
+   <td rowspan="3">14</td>
+   <td><a href="/en-US/docs/Web/JavaScript/Reference/Operators/Arithmetic_Operators#Multiplication" title="JavaScript/Reference/Operators/Arithmetic_Operators">Multiplicação</a></td>
+   <td>esquerda para direita</td>
+   <td><code>… * …</code></td>
+  </tr>
+  <tr>
+   <td><a href="/en-US/docs/Web/JavaScript/Reference/Operators/Arithmetic_Operators#Division" title="JavaScript/Reference/Operators/Arithmetic_Operators">Divisão</a></td>
+   <td>esquerda para direita</td>
+   <td><code>… / …</code></td>
+  </tr>
+  <tr>
+   <td><a href="/en-US/docs/Web/JavaScript/Reference/Operators/Arithmetic_Operators#Remainder" title="JavaScript/Reference/Operators/Arithmetic_Operators">Resto</a></td>
+   <td>esquerda para direita</td>
+   <td><code>… % …</code></td>
+  </tr>
+  <tr>
+   <td rowspan="2">13</td>
+   <td><a href="/en-US/docs/Web/JavaScript/Reference/Operators/Arithmetic_Operators#Addition" title="JavaScript/Reference/Operators/Arithmetic_Operators">Adição</a></td>
+   <td>esquerda para direita</td>
+   <td><code>… + …</code></td>
+  </tr>
+  <tr>
+   <td><a href="/en-US/docs/Web/JavaScript/Reference/Operators/Arithmetic_Operators#Subtraction" title="JavaScript/Reference/Operators/Arithmetic_Operators">Subtração</a></td>
+   <td>esquerda para direita</td>
+   <td><code>… - …</code></td>
+  </tr>
+  <tr>
+   <td rowspan="3">12</td>
+   <td><a href="/en-US/docs/Web/JavaScript/Reference/Operators/Bitwise_Operators" title="JavaScript/Reference/Operators/Bitwise_Operators">Deslocamento de bits para esquerda</a></td>
+   <td>esquerda para direita</td>
+   <td><code>… &lt;&lt; …</code></td>
+  </tr>
+  <tr>
+   <td><a href="/en-US/docs/Web/JavaScript/Reference/Operators/Bitwise_Operators" title="JavaScript/Reference/Operators/Bitwise_Operators">Deslocamento de bits para direita</a></td>
+   <td>esquerda para direita</td>
+   <td><code>… &gt;&gt; …</code></td>
+  </tr>
+  <tr>
+   <td><a href="/en-US/docs/Web/JavaScript/Reference/Operators/Bitwise_Operators" title="JavaScript/Reference/Operators/Bitwise_Operators">Deslocamento de bits para direita, sem sinal</a></td>
+   <td>esquerda para direita</td>
+   <td><code>… &gt;&gt;&gt; …</code></td>
+  </tr>
+  <tr>
+   <td rowspan="6">11</td>
+   <td><a href="/en-US/docs/Web/JavaScript/Reference/Operators/Comparison_Operators#Less_than_operator" title="JavaScript/Reference/Operators/Comparison_Operators">Menor Que</a></td>
+   <td>esquerda para direita</td>
+   <td><code>… &lt; …</code></td>
+  </tr>
+  <tr>
+   <td><a href="/en-US/docs/Web/JavaScript/Reference/Operators/Comparison_Operators#Less_than__or_equal_operator" title="JavaScript/Reference/Operators/Comparison_Operators">Menor ou Igual a</a></td>
+   <td>esquerda para direita</td>
+   <td><code>… &lt;= …</code></td>
+  </tr>
+  <tr>
+   <td><a href="/en-US/docs/Web/JavaScript/Reference/Operators/Comparison_Operators#Greater_than_operator" title="JavaScript/Reference/Operators/Comparison_Operators">Maior Que</a></td>
+   <td>esquerda para direita</td>
+   <td><code>… &gt; …</code></td>
+  </tr>
+  <tr>
+   <td><a href="/en-US/docs/Web/JavaScript/Reference/Operators/Comparison_Operators#Greater_than_or_equal_operator" title="JavaScript/Reference/Operators/Comparison_Operators">Maior ou Igual a</a></td>
+   <td>esquerda para direita</td>
+   <td><code>… &gt;= …</code></td>
+  </tr>
+  <tr>
+   <td><a href="/en-US/docs/Web/JavaScript/Reference/Operators/in" title="JavaScript/Reference/Operators/Special_Operators/in_Operator">in</a></td>
+   <td>esquerda para direita</td>
+   <td><code>… in …</code></td>
+  </tr>
+  <tr>
+   <td><a href="/en-US/docs/Web/JavaScript/Reference/Operators/instanceof" title="JavaScript/Reference/Operators/Special_Operators/instanceof_Operator">instanceof</a></td>
+   <td>esquerda para direita</td>
+   <td><code>… instanceof …</code></td>
+  </tr>
+  <tr>
+   <td rowspan="4">10</td>
+   <td><a href="/en-US/docs/Web/JavaScript/Reference/Operators/Comparison_Operators#Equality" title="JavaScript/Reference/Operators/Comparison_Operators">Igualdade</a></td>
+   <td>esquerda para direita</td>
+   <td><code>… == …</code></td>
+  </tr>
+  <tr>
+   <td><a href="/en-US/docs/Web/JavaScript/Reference/Operators/Comparison_Operators#Inequality" title="JavaScript/Reference/Operators/Comparison_Operators">Desigualdade</a></td>
+   <td>esquerda para direita</td>
+   <td><code>… != …</code></td>
+  </tr>
+  <tr>
+   <td><a href="/en-US/docs/Web/JavaScript/Reference/Operators/Comparison_Operators#Identity" title="JavaScript/Reference/Operators/Comparison_Operators">Igualdade Estrita</a></td>
+   <td>esquerda para direita</td>
+   <td><code>… === …</code></td>
+  </tr>
+  <tr>
+   <td><a href="/en-US/docs/Web/JavaScript/Reference/Operators/Comparison_Operators#Nonidentity" title="JavaScript/Reference/Operators/Comparison_Operators">Desigualdade Estrita</a></td>
+   <td>esquerda para direita</td>
+   <td><code>… !== …</code></td>
+  </tr>
+  <tr>
+   <td>9</td>
+   <td><a href="/en-US/docs/Web/JavaScript/Reference/Operators/Bitwise_Operators#Bitwise_AND" title="JavaScript/Reference/Operators/Bitwise_Operators">E bit-a-bit</a></td>
+   <td>esquerda para direita</td>
+   <td><code>… &amp; …</code></td>
+  </tr>
+  <tr>
+   <td>8</td>
+   <td><a href="/en-US/docs/Web/JavaScript/Reference/Operators/Bitwise_Operators#Bitwise_XOR" title="JavaScript/Reference/Operators/Bitwise_Operators">OU exclusivo bit-a-bit</a></td>
+   <td>esquerda para direita</td>
+   <td><code>… ^ …</code></td>
+  </tr>
+  <tr>
+   <td>7</td>
+   <td><a href="/en-US/docs/Web/JavaScript/Reference/Operators/Bitwise_Operators#Bitwise_OR" title="JavaScript/Reference/Operators/Bitwise_Operators">OU bit-a-bit</a></td>
+   <td>esquerda para direita</td>
+   <td><code>… | …</code></td>
+  </tr>
+  <tr>
+   <td>6</td>
+   <td><a href="/en-US/docs/Web/JavaScript/Reference/Operators/Logical_Operators#Logical_AND" title="JavaScript/Reference/Operators/Logical_Operators">E lógico</a></td>
+   <td>esquerda para direita</td>
+   <td><code>… &amp;&amp; …</code></td>
+  </tr>
+  <tr>
+   <td>5</td>
+   <td><a href="/en-US/docs/Web/JavaScript/Reference/Operators/Logical_Operators#Logical_OR" title="JavaScript/Reference/Operators/Logical_Operators">OU lógico</a></td>
+   <td>esquerda para direita</td>
+   <td><code>… || …</code></td>
+  </tr>
+  <tr>
+   <td>4</td>
+   <td><a href="/en-US/docs/Web/JavaScript/Reference/Operators/Conditional_Operator" title="JavaScript/Reference/Operators/Special_Operators/Conditional_Operator">Condicional</a></td>
+   <td>direita para esquerda</td>
+   <td><code>… ? … : …</code></td>
+  </tr>
+  <tr>
+   <td rowspan="12">3</td>
+   <td rowspan="12"><a href="/en-US/docs/Web/JavaScript/Reference/Operators/Assignment_Operators" title="JavaScript/Reference/Operators/Assignment_Operators">Atribuição</a></td>
+   <td rowspan="12">direita para esquerda</td>
+   <td><code>… = …</code></td>
+  </tr>
+  <tr>
+   <td><code>… += …</code></td>
+  </tr>
+  <tr>
+   <td><code>… -= …</code></td>
+  </tr>
+  <tr>
+   <td><code>… *= …</code></td>
+  </tr>
+  <tr>
+   <td><code>… /= …</code></td>
+  </tr>
+  <tr>
+   <td><code>… %= …</code></td>
+  </tr>
+  <tr>
+   <td><code>… &lt;&lt;= …</code></td>
+  </tr>
+  <tr>
+   <td><code>… &gt;&gt;= …</code></td>
+  </tr>
+  <tr>
+   <td><code>… &gt;&gt;&gt;= …</code></td>
+  </tr>
+  <tr>
+   <td><code>… &amp;= …</code></td>
+  </tr>
+  <tr>
+   <td><code>… ^= …</code></td>
+  </tr>
+  <tr>
+   <td><code>… |= …</code></td>
+  </tr>
+  <tr>
+   <td rowspan="2">2</td>
+   <td><a href="/en-US/docs/Web/JavaScript/Reference/Operators/yield" title="JavaScript/Reference/Operators/yield">yield</a></td>
+   <td rowspan="2">direita para esquerda</td>
+   <td><code>yield …</code></td>
+  </tr>
+  <tr>
+   <td><a href="https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Operators/yield*">yield*</a></td>
+   <td><code>yield* …</code></td>
+  </tr>
+  <tr>
+   <td>1</td>
+   <td><a href="/en-US/docs/Web/JavaScript/Reference/Operators/Spread_operator" title="JavaScript/Reference/Operators/Spread_operator">Propagação</a></td>
+   <td>n/a</td>
+   <td><code>...</code> …</td>
+  </tr>
+  <tr>
+   <td>0</td>
+   <td><a href="/en-US/docs/Web/JavaScript/Reference/Operators/Comma_Operator" title="JavaScript/Reference/Operators/Comma_Operator">Vírgula / Sequência</a></td>
+   <td>esquerda para direita</td>
+   <td><code>… , …</code></td>
+  </tr>
+ </tbody>
+</table>
+
+<p> </p>