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+---
+title: Reflect.construct()
+slug: Web/JavaScript/Reference/Global_Objects/Reflect/construct
+tags:
+  - ECMAScript 2015
+  - JavaScript
+  - Method
+  - Reference
+  - Reflect
+translation_of: Web/JavaScript/Reference/Global_Objects/Reflect/construct
+---
+<div>{{JSRef}}</div>
+
+<p><code><strong>Reflect</strong></code><strong><code>.construct()</code></strong> 정적 메서드는 <a href="https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Operators/new"><code>new</code> 연산자</a>처럼 동작하는 함수입니다. <code>new target(...args)</code>를 호출하는 것과 같습니다. 추가 기능으로 다른 프로토타입을 지정할 수도 있습니다.</p>
+
+<div>{{EmbedInteractiveExample("pages/js/reflect-construct.html")}}</div>
+
+
+
+<h2 id="구문">구문</h2>
+
+<pre class="syntaxbox">Reflect.construct(<em>target</em>, <em>argumentsList</em>[, <em>newTarget</em>])
+</pre>
+
+<h3 id="매개변수">매개변수</h3>
+
+<dl>
+ <dt><code>target</code></dt>
+ <dd>호출할 대상 함수.</dd>
+ <dt><code>argumentsList</code></dt>
+ <dd><code>target</code>의 매개변수로 전달할 배열형 객체.</dd>
+ <dt><code>newTarget</code> {{optional_inline}}</dt>
+ <dd>프로토타입으로 사용할 생성자. <code><a href="/en-US/docs/Web/JavaScript/Reference/Operators/new.target">new.target</a></code> 연산자도 확인하세요. <code>newTarget</code>이 주어지지 않았을 땐 <code>target</code>을 사용합니다.</dd>
+</dl>
+
+<h3 id="반환_값">반환 값</h3>
+
+<p><code>target</code>을 생성자로 하고 주어진 매개변수를 전달해 생성한 <code>target</code>(또는, 지정했다면 <code>newTarget</code>)의 새로운 인스턴스.</p>
+
+<h3 id="예외">예외</h3>
+
+<p><code>target</code> 또는 <code>newTarget</code>이 생성자가 아니면 {{jsxref("TypeError")}}.</p>
+
+<h2 id="설명">설명</h2>
+
+<p><code>Reflect.construct()</code>는 생성자를 가변 길이의 매개변수로 호출할 수 있습니다. (<a href="https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Operators/new"><code>new</code> 연산자</a>와 <a href="/ko/docs/Web/JavaScript/Reference/Operators/Spread_syntax">전개 구문</a>을 사용해도 가능합니다)</p>
+
+<pre class="brush: js">var obj = new Foo(...args);
+var obj = Reflect.construct(Foo, args);
+</pre>
+
+<h3 id="Reflect.construct()_vs_Object.create()"><code>Reflect.construct()</code> vs <code>Object.create()</code></h3>
+
+<p><code>Reflect</code>의 도입 이전에는 임의의 생성자와 프로토타입에 {{jsxref("Object.create()")}}를 사용해 객체를 생성할 수 있었습니다.</p>
+
+<pre class="brush: js">function OneClass() {
+    this.name = 'one';
+}
+
+function OtherClass() {
+    this.name = 'other';
+}
+
+// Calling this:
+var obj1 = Reflect.construct(OneClass, args, OtherClass);
+
+// ...has the same result as this:
+var obj2 = Object.create(OtherClass.prototype);
+OneClass.apply(obj2, args);
+
+console.log(obj1.name); // 'one'
+console.log(obj2.name); // 'one'
+
+console.log(obj1 instanceof OneClass); // false
+console.log(obj2 instanceof OneClass); // false
+
+console.log(obj1 instanceof OtherClass); // true
+console.log(obj2 instanceof OtherClass); // true
+</pre>
+
+<p>그러나, 결과는 동일하더라도 과정에는 중요한 차이가 하나 존재합니다. <code>Object.create()</code>와 {{jsxref("Function.prototype.apply()")}}를 사용할 땐, 객체 생성에 <code>new</code> 키워드가 관여하지 않으므로 <code>new.target</code> 연산자가 <code>undefined</code>를 가리킵니다.</p>
+
+<p>반면 <code>Reflect.construct()</code>를 호출하면, <code>newTarget</code>이 존재하면 <code>new.target</code> 연산자가 <code>newTarget</code>을, 아니면 <code>target</code>을 가리킵니다.</p>
+
+<pre class="brush: js">function OneClass() {
+    console.log('OneClass');
+    console.log(new.target);
+}
+function OtherClass() {
+    console.log('OtherClass');
+    console.log(new.target);
+}
+
+var obj1 = Reflect.construct(OneClass, args);
+// Output:
+//     OneClass
+//     function OneClass { ... }
+
+var obj2 = Reflect.construct(OneClass, args, OtherClass);
+// Output:
+//     OneClass
+//     function OtherClass { ... }
+
+var obj3 = Object.create(OtherClass.prototype);
+OneClass.apply(obj3, args);
+// Output:
+//     OneClass
+//     undefined
+</pre>
+
+<h2 id="예제">예제</h2>
+
+<h3 id="Reflect.construct()_사용하기"><code>Reflect.construct()</code> 사용하기</h3>
+
+<pre class="brush: js">var d = Reflect.construct(Date, [1776, 6, 4]);
+d instanceof Date; // true
+d.getFullYear(); // 1776
+</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.construct', 'Reflect.construct')}}</td>
+   <td>{{Spec2('ES2015')}}</td>
+   <td>Initial definition.</td>
+  </tr>
+  <tr>
+   <td>{{SpecName('ESDraft', '#sec-reflect.construct', 'Reflect.construct')}}</td>
+   <td>{{Spec2('ESDraft')}}</td>
+   <td> </td>
+  </tr>
+ </tbody>
+</table>
+
+<h2 id="브라우저_호환성">브라우저 호환성</h2>
+
+
+
+<p>{{Compat("javascript.builtins.Reflect.construct")}}</p>
+
+<h2 id="같이_보기">같이 보기</h2>
+
+<ul>
+ <li>{{jsxref("Reflect")}}</li>
+ <li><a href="https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Operators/new"><code>new</code></a></li>
+ <li><code><a href="/en-US/docs/Web/JavaScript/Reference/Operators/new.target">new.target</a></code></li>
+</ul>