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authorPeter Bengtsson <mail@peterbe.com>2020-12-08 14:42:17 -0500
committerPeter Bengtsson <mail@peterbe.com>2020-12-08 14:42:17 -0500
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+---
+title: Map.prototype.has()
+slug: Web/JavaScript/Reference/Global_Objects/Map/has
+tags:
+ - ECMAScript 2015
+ - JavaScript
+ - Map
+ - Method
+ - Prototype
+ - Reference
+translation_of: Web/JavaScript/Reference/Global_Objects/Map/has
+---
+<div>{{JSRef}}</div>
+
+<p><code><strong>has()</strong></code> 메서드는 주어진 키를 가진 요소가 <code>Map</code>에 존재하는지를 반환합니다.</p>
+
+<div>{{EmbedInteractiveExample("pages/js/map-prototype-has.html")}}</div>
+
+
+
+<h2 id="구문">구문</h2>
+
+<pre class="syntaxbox"><code><em>myMap</em>.has(<em>key</em>);</code></pre>
+
+<h3 id="매개변수">매개변수</h3>
+
+<dl>
+ <dt><code>key</code></dt>
+ <dd>존재 여부를 판별할 키값.</dd>
+</dl>
+
+<h3 id="반환_값">반환 값</h3>
+
+<p>주어진 키를 가진 요소가 있으면 <code>true</code>, 아니면 <code>false</code>.</p>
+
+<h2 id="예제">예제</h2>
+
+<h3 id="has()_사용하기"><code>has()</code> 사용하기</h3>
+
+<pre class="brush: js">var myMap = new Map();
+myMap.set('bar', "foo");
+
+myMap.has('bar'); // returns true
+myMap.has('baz'); // returns false
+</pre>
+
+<h2 id="명세">명세</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>{{SpecName('ES2015', '#sec-map.prototype.has', 'Map.prototype.has')}}</td>
+ <td>{{Spec2('ES2015')}}</td>
+ <td>Initial definition.</td>
+ </tr>
+ <tr>
+ <td>{{SpecName('ESDraft', '#sec-map.prototype.has', 'Map.prototype.has')}}</td>
+ <td>{{Spec2('ESDraft')}}</td>
+ <td> </td>
+ </tr>
+ </tbody>
+</table>
+
+<h2 id="브라우저_호환성">브라우저 호환성</h2>
+
+
+
+<p>{{Compat("javascript.builtins.Map.has")}}</p>
+
+<h2 id="같이_보기">같이 보기</h2>
+
+<ul>
+ <li>{{jsxref("Map")}}</li>
+ <li>{{jsxref("Map.prototype.set()")}}</li>
+ <li>{{jsxref("Map.prototype.get()")}}</li>
+</ul>