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+---
+title: Reflect.has()
+slug: Web/JavaScript/Reference/Global_Objects/Reflect/has
+tags:
+  - ECMAScript 2015
+  - JavaScript
+  - Method
+  - Reference
+  - Reflect
+translation_of: Web/JavaScript/Reference/Global_Objects/Reflect/has
+---
+<div>{{JSRef}}</div>
+
+<p><code><strong>Reflect</strong></code><strong><code>.has()</code></strong> 정적 메서드는 <a href="/ko/docs/Web/JavaScript/Reference/Operators/in"><code>in</code> 연산자</a>의 함수판입니다.</p>
+
+<div>{{EmbedInteractiveExample("pages/js/reflect-has.html")}}</div>
+
+
+
+<h2 id="구문">구문</h2>
+
+<pre class="syntaxbox">Reflect.has(<em>target</em>, <em>propertyKey</em>)
+</pre>
+
+<h3 id="매개변수">매개변수</h3>
+
+<dl>
+ <dt><code>target</code></dt>
+ <dd>속성을 탐색할 객체.</dd>
+ <dt><code>propertyKey</code></dt>
+ <dd>탐색할 속성의 이름.</dd>
+</dl>
+
+<h3 id="반환_값">반환 값</h3>
+
+<p>객체가 속성을 가지고 있는지 나타내는 {{jsxref("Boolean")}}.</p>
+
+<h3 id="예외">예외</h3>
+
+<p><code>target</code>이 {{jsxref("Object")}}가 아니면 {{jsxref("TypeError")}}.</p>
+
+<h2 id="설명">설명</h2>
+
+<p><code>Reflect.has()</code> 메서드는 객체에 속성이 존재하는지 판별할 수 있습니다. <a href="/ko/docs/Web/JavaScript/Reference/Operators/in"><code>in</code> 연산자</a>처럼 동작합니다.</p>
+
+<h2 id="예제">예제</h2>
+
+<h3 id="Reflect.has()_사용하기"><code>Reflect.has()</code> 사용하기</h3>
+
+<pre class="brush: js">Reflect.has({x: 0}, 'x'); // true
+Reflect.has({x: 0}, 'y'); // false
+
+// 프로토타입 체인에 존재하는 속성도 true 반환
+Reflect.has({x: 0}, 'toString');
+
+// .has() 처리기 메서드를 가진 Proxy
+obj = new Proxy({}, {
+  has(t, k) { return k.startsWith('door'); }
+});
+Reflect.has(obj, 'doorbell'); // true
+Reflect.has(obj, 'dormitory'); // 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-reflect.has', 'Reflect.has')}}</td>
+   <td>{{Spec2('ES2015')}}</td>
+   <td>Initial definition.</td>
+  </tr>
+  <tr>
+   <td>{{SpecName('ESDraft', '#sec-reflect.has', 'Reflect.has')}}</td>
+   <td>{{Spec2('ESDraft')}}</td>
+   <td> </td>
+  </tr>
+ </tbody>
+</table>
+
+<h2 id="브라우저_호환성">브라우저 호환성</h2>
+
+
+
+<p>{{Compat("javascript.builtins.Reflect.has")}}</p>
+
+<h2 id="같이_보기">같이 보기</h2>
+
+<ul>
+ <li>{{jsxref("Reflect")}}</li>
+ <li><a href="/ko/docs/Web/JavaScript/Reference/Operators/in"><code>in</code> 연산자</a></li>
+</ul>