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+---
+title: Addition (+)
+slug: Web/JavaScript/Reference/Operators/Addition
+translation_of: Web/JavaScript/Reference/Operators/Addition
+---
+<div>{{jsSidebar("Operators")}}</div>
+
+<p>증가 연산자<sup>addition operator</sup> (<code>+</code>)는 숫자 또는 여러 문자열의 더합니다.</p>
+
+<div>{{EmbedInteractiveExample("pages/js/expressions-addition.html")}}</div>
+
+<div></div>
+
+
+
+<h2 id="Syntax">Syntax</h2>
+
+<pre class="syntaxbox notranslate"><strong>Operator:</strong> <var>x</var> + <var>y</var>
+</pre>
+
+<h2 id="Examples">Examples</h2>
+
+<h3 id="Numeric_addition">Numeric addition</h3>
+
+<pre class="brush: js notranslate">// Number + Number -&gt; addition
+1 + 2 // 3
+
+// Boolean + Number -&gt; addition
+true + 1 // 2
+
+// Boolean + Boolean -&gt; addition
+false + false // 0
+</pre>
+
+<h3 id="String_concatenation">String concatenation</h3>
+
+<pre class="brush: js notranslate">// String + String -&gt; concatenation
+'foo' + 'bar' // "foobar"
+
+// Number + String -&gt; concatenation
+5 + 'foo' // "5foo"
+
+// String + Boolean -&gt; concatenation
+'foo' + false // "foofalse"</pre>
+
+<h2 id="Specifications">Specifications</h2>
+
+<table class="standard-table">
+ <tbody>
+  <tr>
+   <th scope="col">Specification</th>
+  </tr>
+  <tr>
+   <td>{{SpecName('ESDraft', '#sec-addition-operator-plus', 'Addition operator')}}</td>
+  </tr>
+ </tbody>
+</table>
+
+<h2 id="Browser_compatibility">Browser compatibility</h2>
+
+
+
+<p>{{Compat("javascript.operators.addition")}}</p>
+
+<h2 id="See_also">See also</h2>
+
+<ul>
+ <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/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>