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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>
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