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author | Peter Bengtsson <mail@peterbe.com> | 2020-12-08 14:42:17 -0500 |
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committer | Peter Bengtsson <mail@peterbe.com> | 2020-12-08 14:42:17 -0500 |
commit | da78a9e329e272dedb2400b79a3bdeebff387d47 (patch) | |
tree | e6ef8aa7c43556f55ddfe031a01cf0a8fa271bfe /files/ko/web/javascript/reference/global_objects/object/constructor | |
parent | 1109132f09d75da9a28b649c7677bb6ce07c40c0 (diff) | |
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diff --git a/files/ko/web/javascript/reference/global_objects/object/constructor/index.html b/files/ko/web/javascript/reference/global_objects/object/constructor/index.html new file mode 100644 index 0000000000..0162140d9c --- /dev/null +++ b/files/ko/web/javascript/reference/global_objects/object/constructor/index.html @@ -0,0 +1,155 @@ +--- +title: Object.prototype.constructor +slug: Web/JavaScript/Reference/Global_Objects/Object/constructor +tags: + - JavaScript + - Object + - Property + - Prototype + - Reference +translation_of: Web/JavaScript/Reference/Global_Objects/Object/constructor +--- +<div>{{JSRef}}</div> + +<p>인스턴스의 프로토타입을 만든 {{jsxref("Object")}} 함수의 참조를 반환합니다. 이 속성값은 함수 자체의 참조임을 주의하세요, 함수 이름을 포함하는 문자열이 아니라. 그 값은 <code>1</code>, <code>true</code> 및 <code>"test"</code>와 같은 원시(primitive) 값에 대해서만 읽기 전용입니다.</p> + +<h2 id="설명">설명</h2> + +<p>모든 객체는 자신의 <code>prototype</code>으로부터 <code>constructor</code> 속성을 상속합니다:</p> + +<pre>var o = {}; +o.constructor === Object; // true + +var o = new Object; +o.constructor === Object; // true + +var a = []; +a.constructor === Array; // true + +var a = new Array; +a.constructor === Array; // true + +var n = new Number(3); +n.constructor === Number; // true</pre> + +<h2 id="예제">예제</h2> + +<h3 id="객체의_생성자_표시하기">객체의 생성자 표시하기</h3> + +<p>다음 예는 프로토타입이 <code>Tree</code>인 그 형의 객체 <code>theTree</code>를 만듭니다. 그 다음 객체 <code>theTree</code>의 <code>constructor</code>를 표시합니다.</p> + +<pre class="brush: js">function Tree(name) { + this.name = name; +} + +var theTree = new Tree('Redwood'); +console.log('theTree.constructor is ' + theTree.constructor); +</pre> + +<p>이 예는 다음 출력을 표시합니다:</p> + +<pre class="brush: js">theTree.constructor is function Tree(name) { + this.name = name; +} +</pre> + +<h3 id="객체의_생성자_바꾸기">객체의 생성자 바꾸기</h3> + +<p>다음 예는 일반 객체의 constructor 값을 수정하는 법을 보입니다. <code>true</code>, <code>1</code> 및 <code>"test"</code>만이 원래 읽기 전용 생성자를 갖기에 영향을 받지 않습니다. 이 예는 객체의 <code>constructor</code> 속성에 의존하는 게 항상 안전하지는 않음을 보입니다.</p> + +<pre class="brush:js">function Type () {} + +var types = [ + new Array(), + [], + new Boolean(), + true, // 바뀌지 않음 + new Date(), + new Error(), + new Function(), + function () {}, + Math, + new Number(), + 1, // 바뀌지 않음 + new Object(), + {}, + new RegExp(), + /(?:)/, + new String(), + 'test' // 바뀌지 않음 +]; + +for (var i = 0; i < types.length; i++) { + types[i].constructor = Type; + types[i] = [types[i].constructor, types[i] instanceof Type, types[i].toString()]; +} + +console.log(types.join('\n')); +</pre> + +<p>이 예는 다음 출력을 표시합니다:</p> + +<pre class="brush: js">function Type() {},false, +function Type() {},false, +function Type() {},false,false +function Boolean() { + [native code] +},false,true +function Type() {},false,Mon Sep 01 2014 16:03:49 GMT+0600 +function Type() {},false,Error +function Type() {},false,function anonymous() { + +} +function Type() {},false,function () {} +function Type() {},false,[object Math] +function Type() {},false,0 +function Number() { + [native code] +},false,1 +function Type() {},false,[object Object] +function Type() {},false,[object Object] +function Type() {},false,/(?:)/ +function Type() {},false,/(?:)/ +function Type() {},false, +function String() { + [native code] +},false,test +</pre> + +<h2 id="명세">명세</h2> + +<table class="standard-table"> + <tbody> + <tr> + <th scope="col">명세</th> + <th scope="col">상태</th> + <th scope="col">설명</th> + </tr> + <tr> + <td>{{SpecName('ES1')}}</td> + <td>{{Spec2('ES1')}}</td> + <td>초기 정의. JavaScript 1.1에서 구현됨.</td> + </tr> + <tr> + <td>{{SpecName('ES5.1', '#sec-15.2.4.1', 'Object.prototype.constructor')}}</td> + <td>{{Spec2('ES5.1')}}</td> + <td> </td> + </tr> + <tr> + <td>{{SpecName('ES6', '#sec-object.prototype.constructor', 'Object.prototype.constructor')}}</td> + <td>{{Spec2('ES6')}}</td> + <td> </td> + </tr> + <tr> + <td>{{SpecName('ESDraft', '#sec-object.prototype.constructor', 'Object.prototype.constructor')}}</td> + <td>{{Spec2('ESDraft')}}</td> + <td> </td> + </tr> + </tbody> +</table> + +<h2 id="브라우저_호환성">브라우저 호환성</h2> + +<div>{{Compat("javascript.builtins.Object.constructor")}}</div> + +<div id="compat-mobile"> </div> |