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+---
+title: Set.prototype.has()
+slug: Web/JavaScript/Reference/Global_Objects/Set/has
+tags:
+  - ECMAScript 2015
+  - JavaScript
+  - Method
+  - Prototype
+  - Reference
+  - set
+translation_of: Web/JavaScript/Reference/Global_Objects/Set/has
+---
+<div>{{JSRef}}</div>
+
+<p><code><strong>has()</strong></code> 메서드는 <code>Set</code> 객체에 주어진 요소가 존재하는지 여부를 판별해 반환합니다.</p>
+
+<div>{{EmbedInteractiveExample("pages/js/set-prototype-has.html")}}</div>
+
+
+
+<h2 id="구문">구문</h2>
+
+<pre class="syntaxbox"><em>mySet</em>.has(<em>value</em>);</pre>
+
+<h3 id="매개변수">매개변수</h3>
+
+<dl>
+ <dt><code>value</code></dt>
+ <dd><code>Set</code> 객체에서 존재 여부를 판별할 값.</dd>
+</dl>
+
+<h3 id="반환_값">반환 값</h3>
+
+<p><code>Set</code> 객체에 값이 존재하면 <code>true</code>, 아니면 <code>false</code>.</p>
+
+<div class="blockIndicator note">
+<p><strong>참고:</strong> 기술적으로, <code>has()</code>는 <a href="/ko/docs/Web/JavaScript/Equality_comparisons_and_sameness#등가0_같음"><code>sameValueZero</code></a> 알고리즘을 사용해 요소의 존재 여부를 판별합니다.</p>
+</div>
+
+<h2 id="예제">예제</h2>
+
+<h3 id="has()_사용하기"><code>has()</code> 사용하기</h3>
+
+<pre class="brush: js">var mySet = new Set();
+mySet.add('foo');
+
+mySet.has('foo');  // true
+mySet.has('bar');  // false
+
+var set1 = new Set();
+var obj1 = {'key1': 1};
+set1.add(obj1);
+
+set1.has(obj1);        // true
+set1.has({'key1': 1}); // false, 형태만 같은 서로 다른 객체의 참조이기 때문
+set1.add({'key1': 1}); // set1의 요소가 2개로 늘어남
+</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-set.prototype.has', 'Set.prototype.has')}}</td>
+   <td>{{Spec2('ES2015')}}</td>
+   <td>Initial definition.</td>
+  </tr>
+  <tr>
+   <td>{{SpecName('ESDraft', '#sec-set.prototype.has', 'Set.prototype.has')}}</td>
+   <td>{{Spec2('ESDraft')}}</td>
+   <td> </td>
+  </tr>
+ </tbody>
+</table>
+
+<h2 id="브라우저_호환성">브라우저 호환성</h2>
+
+
+
+<p>{{Compat("javascript.builtins.Set.has")}}</p>
+
+<h2 id="같이_보기">같이 보기</h2>
+
+<ul>
+ <li>{{jsxref("Set")}}</li>
+ <li>{{jsxref("Set.prototype.add()")}}</li>
+ <li>{{jsxref("Set.prototype.delete()")}}</li>
+</ul>