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+---
+title: Dekrement (--)
+slug: Web/JavaScript/Reference/Operators/Decrement
+tags:
+ - Dekrement
+ - Dekrement-Operator
+ - Dekrementieren
+translation_of: Web/JavaScript/Reference/Operators/Decrement
+original_slug: Web/JavaScript/Reference/Operators/Dekrement
+---
+<div>{{jsSidebar("Operators")}}</div>
+
+<p>Der Dekrement-Operator (--) dekrementiert den Operanden um eins, zieht als eins vom Operanden ab und gibt einen Wert zurück.</p>
+
+<div>{{EmbedInteractiveExample("pages/js/expressions-decrement.html")}}</div>
+
+<div></div>
+
+
+
+<h2 id="Syntax">Syntax</h2>
+
+<pre class="syntaxbox notranslate"><strong>Operator:</strong> <var>x</var>-- or --<var>x</var>
+</pre>
+
+<h2 id="Description">Description</h2>
+
+<p>Wenn der Dekrement-Operator als Postfix benutzt wird, also der Operator hinter dem Operanden steht (z.B. x--), wird der Operand um eins reduziert aber der Wert vor dem Dekrementieren zurückgegeben. </p>
+
+<p>Wird der Dekrement-Operator als Präfix genutzt, steht also der Operator vor dem Operanden (z. B. --x), wird der Operator um eins reduziert und der Wert nach dieser Dekrementierung zurückgegeben.</p>
+
+<h2 id="Examples">Examples</h2>
+
+<h3 id="Postfix_decrement">Postfix decrement</h3>
+
+<pre class="brush: js notranslate">let x = 3;
+y = x--;
+
+// y = 3
+// x = 2
+</pre>
+
+<h3 id="Prefix_decrement">Prefix decrement</h3>
+
+<pre class="brush: js notranslate">let a = 2;
+b = --a;
+
+// a = 1
+// b = 1
+</pre>
+
+<h2 id="Specifications">Specifications</h2>
+
+<table class="standard-table">
+ <tbody>
+ <tr>
+ <th scope="col">Specification</th>
+ </tr>
+ <tr>
+ <td>{{SpecName('ESDraft', '#sec-postfix-decrement-operator', 'Decrement operator')}}</td>
+ </tr>
+ </tbody>
+</table>
+
+<h2 id="Browser_compatibility">Browser compatibility</h2>
+
+
+
+<p>{{Compat("javascript.operators.decrement")}}</p>
+
+<h2 id="See_also">See also</h2>
+
+<ul>
+ <li><a href="https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Operators/Addition">Addition operator</a></li>
+ <li><a href="https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Operators/Subtraction">Subtraction operator</a></li>
+ <li><a href="https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Operators/Division">Division operator</a></li>
+ <li><a href="https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Operators/Multiplication">Multiplication operator</a></li>
+ <li><a href="https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Operators/Remainder">Remainder operator</a></li>
+ <li><a href="https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Operators/Exponentiation">Exponentiation operator</a></li>
+ <li><a href="https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Operators/Increment">Increment operator</a></li>
+ <li><a href="https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Operators/Unary_negation">Unary negation operator</a></li>
+ <li><a href="https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Operators/Unary_plus">Unary plus operator</a></li>
+</ul>