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+---
+title: Subtraction (-)
+slug: Web/JavaScript/Reference/Operators/Subtraction
+translation_of: Web/JavaScript/Reference/Operators/Subtraction
+---
+<div>{{jsSidebar("Operators")}}</div>
+
+<p>The subtraction operator (<code>-</code>) subtracts the two operands, producing their difference.</p>
+
+<div>{{EmbedInteractiveExample("pages/js/expressions-subtraction.html")}}</div>
+
+<div></div>
+
+
+
+<h2 id="语法">语法</h2>
+
+<pre class="syntaxbox notranslate"><strong>Operator:</strong> <var>x</var> - <var>y</var>
+</pre>
+
+<h2 id="Examples">Examples</h2>
+
+<h3 id="Subtraction_with_numbers">Subtraction with numbers</h3>
+
+<pre class="brush: js notranslate">5 - 3     // 2
+3 - 5     // -2</pre>
+
+<h3 id="Subtraction_with_non-numbers">Subtraction with non-numbers</h3>
+
+<pre class="brush: js notranslate">'foo' - 3 // NaN</pre>
+
+<h2 id="Specifications">Specifications</h2>
+
+<table class="standard-table">
+ <tbody>
+  <tr>
+   <th scope="col">Specification</th>
+  </tr>
+  <tr>
+   <td>{{SpecName('ESDraft', '#sec-subtraction-operator-minus', 'Subtraction operator')}}</td>
+  </tr>
+ </tbody>
+</table>
+
+<h2 id="Browser_compatibility">Browser compatibility</h2>
+
+
+
+<p>{{Compat("javascript.operators.subtraction")}}</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/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/Decrement">Decrement 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>
+
+<p>
+ <audio style="display: none;"></audio>
+</p>