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+---
+title: Generator
+slug: Web/JavaScript/Reference/Global_Objects/Generator
+tags:
+ - ECMAScript 2015
+ - Generator
+ - JavaScript
+ - Legacy Generator
+ - Legacy Iterator
+ - Reference
+translation_of: Web/JavaScript/Reference/Global_Objects/Generator
+---
+<div>{{JSRef}}</div>
+
+<p><code><strong>Generator</strong></code> 객체는 {{jsxref("Statements/function*", "generator function", "", 1)}} 으로부터 반환된 값이며 <a href="/en-US/docs/Web/JavaScript/Guide/The_Iterator_protocol">반복자와 반복자 프로토콜</a>을 준수합니다.</p>
+
+<h2 id="문법">문법</h2>
+
+<pre class="syntaxbox">function* gen() {
+ yield 1;
+ yield 2;
+ yield 3;
+}
+
+var g = gen(); // "Generator { }"</pre>
+
+<h2 id="메서드">메서드</h2>
+
+<dl>
+ <dt>{{jsxref("Generator.prototype.next()")}}</dt>
+ <dd>{{jsxref("Operators/yield", "yield")}} 표현을 통해 yield된 값을 반환합니다.</dd>
+ <dt>{{jsxref("Generator.prototype.return()")}}</dt>
+ <dd>주어진 값을 반환하고 생성기를 종료합니다.</dd>
+ <dt>{{jsxref("Generator.prototype.throw()")}}</dt>
+ <dd>생성기로 에러를 throw합니다.</dd>
+</dl>
+
+<h2 id="예시">예시</h2>
+
+<h3 id="무한_반복자">무한 반복자</h3>
+
+<pre class="brush: js">function* idMaker(){
+ var index = 0;
+ while(true)
+ yield index++;
+}
+
+var gen = idMaker(); // "Generator { }"
+
+console.log(gen.next().value); // 0
+console.log(gen.next().value); // 1
+console.log(gen.next().value); // 2
+// ...</pre>
+
+<h2 id="오래된_Generator_객체">오래된 Generator 객체</h2>
+
+<p>Firefox (SpiderMonkey)는 <a href="/en-US/docs/Web/JavaScript/New_in_JavaScript/1.7">JavaScript 1.7</a>에서 이전 버전의 생성기도 구현 했습니다.이 버전에서는 함수 선언에서 별표 (*)가 필요하지 않습니다 (함수 본문에서 <code>yield</code> 키워드 만 사용). 그러나 오래된 생성기는 더 이상 사용되지 않습니다. 사용하지 마십시오. 곧 제거 될 것입니다 ({{bug(1083482)}}).</p>
+
+<h3 id="오래된_Generator_메서드들">오래된 Generator 메서드들</h3>
+
+<dl>
+ <dt><code>Generator.prototype.next() </code>{{non-standard_inline}}</dt>
+ <dd>{{jsxref("Operators/yield", "yield")}} 표현을 통해 yield된 값을 반환합니다. ES2015 Generator 객체의 <code>next()</code> 에 해당합니다.</dd>
+ <dt><code>Generator.prototype.close()</code> {{non-standard_inline}}</dt>
+ <dd>Generator를 닫고, <code>next()가 호출되면 </code>{{jsxref("StopIteration")}} 에러를 던집니다. ES2015 Generator 객체의 <code>return()</code> 에 해당합니다.</dd>
+ <dt><code>Generator.prototype.send()</code> {{non-standard_inline}}</dt>
+ <dd>Generator에 값을 전달하기 위해 사용 합니다. 이 값은 {{jsxref("Operators/yield", "yield")}} 표현식에서 반환되고, 다음 {{jsxref("Operators/yield", "yield")}} 표현식으로 부터 yield된 값을 반환합니다. <code>send(x)</code>는 ES2015 Generator 객체의 <code>next(x)에 해당합니다</code>.</dd>
+ <dt><strong><code>Generator.</code></strong><code>prototype.</code><strong><code>throw()</code> </strong> {{non-standard_inline}}</dt>
+ <dd>Generator 로 에러를 throw합니다. ES2015 Generator 객체의 <code>throw()</code> 에 해당합니다.</dd>
+</dl>
+
+<h3 id="오래된_Generator_예제">오래된 Generator 예제</h3>
+
+<pre class="brush: js">function* fibonacci() {
+ var a = yield 1;
+ yield a * 2;
+}
+
+var it = fibonacci();
+console.log(it); // "Generator { }"
+console.log(it.next()); // 1
+console.log(it.send(10)); // 20
+console.log(it.close()); // undefined
+console.log(it.next()); // throws StopIteration (as the generator is now closed)</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-generator-objects', 'Generator objects')}}</td>
+ <td>{{Spec2('ES2015')}}</td>
+ <td>Initial definition.</td>
+ </tr>
+ <tr>
+ <td>{{SpecName('ESDraft', '#sec-generator-objects', 'Generator objects')}}</td>
+ <td>{{Spec2('ESDraft')}}</td>
+ <td> </td>
+ </tr>
+ </tbody>
+</table>
+
+<h2 id="브라우저_호환성">브라우저 호환성</h2>
+
+<p>{{CompatibilityTable}}</p>
+
+<div id="compat-desktop">
+<table class="compat-table">
+ <tbody>
+ <tr>
+ <th>Feature</th>
+ <th>Chrome</th>
+ <th>Firefox (Gecko)</th>
+ <th>Internet Explorer</th>
+ <th>Opera</th>
+ <th>Safari</th>
+ </tr>
+ <tr>
+ <td>Basic support</td>
+ <td>{{CompatChrome(39.0)}}</td>
+ <td>{{CompatVersionUnknown}}</td>
+ <td>{{CompatNo}}</td>
+ <td>{{CompatNo}}</td>
+ <td>{{CompatNo}}</td>
+ </tr>
+ </tbody>
+</table>
+</div>
+
+<div id="compat-mobile">
+<table class="compat-table">
+ <tbody>
+ <tr>
+ <th>Feature</th>
+ <th>Android</th>
+ <th>Android Webview</th>
+ <th>Firefox Mobile (Gecko)</th>
+ <th>IE Mobile</th>
+ <th>Opera Mobile</th>
+ <th>Safari Mobile</th>
+ <th>Chrome for Android</th>
+ </tr>
+ <tr>
+ <td>Basic support</td>
+ <td>{{CompatNo}}</td>
+ <td>{{CompatChrome(39.0)}}</td>
+ <td>{{CompatVersionUnknown}}</td>
+ <td>{{CompatNo}}</td>
+ <td>{{CompatNo}}</td>
+ <td>{{CompatNo}}</td>
+ <td>{{CompatChrome(39.0)}}</td>
+ </tr>
+ </tbody>
+</table>
+</div>
+
+<p> </p>
+
+<h2 id="같이_보기">같이 보기</h2>
+
+<h3 id="오래된_Generator">오래된 Generator</h3>
+
+<ul>
+ <li>{{jsxref("Statements/Legacy_generator_function", "The legacy generator function", "", 1)}}</li>
+ <li>{{jsxref("Operators/Legacy_generator_function", "The legacy generator function expression", "", 1)}}</li>
+ <li>{{jsxref("StopIteration")}}</li>
+ <li><a href="/en-US/docs/Web/JavaScript/Reference/Deprecated_and_obsolete_features/The_legacy_Iterator_protocol">The legacy Iterator protocol</a></li>
+</ul>
+
+<h3 id="ES2015_Generator">ES2015 Generator</h3>
+
+<ul>
+ <li>{{jsxref("Functions", "Functions", "", 1)}}</li>
+ <li>{{jsxref("Statements/function", "function")}}</li>
+ <li>{{jsxref("Operators/function", "function expression")}}</li>
+ <li>{{jsxref("Function")}}</li>
+ <li>{{jsxref("Statements/function*", "function*")}}</li>
+ <li>{{jsxref("Operators/function*", "function* expression")}}</li>
+ <li>{{jsxref("GeneratorFunction")}}</li>
+ <li><a href="/en-US/docs/Web/JavaScript/Guide/The_Iterator_protocol">The Iterator protocol</a></li>
+</ul>