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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/generator/throw | |
parent | 1109132f09d75da9a28b649c7677bb6ce07c40c0 (diff) | |
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-rw-r--r-- | files/ko/web/javascript/reference/global_objects/generator/throw/index.html | 99 |
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diff --git a/files/ko/web/javascript/reference/global_objects/generator/throw/index.html b/files/ko/web/javascript/reference/global_objects/generator/throw/index.html new file mode 100644 index 0000000000..534eefe0f6 --- /dev/null +++ b/files/ko/web/javascript/reference/global_objects/generator/throw/index.html @@ -0,0 +1,99 @@ +--- +title: Generator.prototype.throw() +slug: Web/JavaScript/Reference/Global_Objects/Generator/throw +tags: + - ECMAScript 2015 + - Generator + - JavaScript + - Method + - Prototype + - Reference +translation_of: Web/JavaScript/Reference/Global_Objects/Generator/throw +--- +<div>{{JSRef}}</div> + +<p><code><strong>throw()</strong></code> 메서드는 Generator의 실행을 재개시키고 Generator 함수의 실행 문맥 속으로 error를 주입한다. <code>done</code>과 <code>value</code> 프로퍼티를 가진 객체를 반환한다.</p> + +<h2 id="구문">구문</h2> + +<pre class="syntaxbox"><var>gen</var>.throw(exception)</pre> + +<h3 id="매개변수">매개변수</h3> + +<dl> + <dt><code>exception</code></dt> + <dd>Generator 함수의 실행 문맥 속으로 주입할 예외. 디버깅의 목적이라면 <code>instanceof</code> {{jsxref("Error")}} 인 것이 유용하다.</dd> +</dl> + +<h3 id="반환_값">반환 값</h3> + +<p>두 개의 프로퍼티를 가진 <code><a href="/en-US/docs/Web/JavaScript/Reference/Global_Objects/Object">객체</a></code></p> + +<ul> + <li><code>done</code> (boolean) + + <ul> + <li>Iterator(반복자)가 마지막 반복 작업을 마쳤을 경우 <code>true</code>. 만약 iterator(반복자)에 <em>return 값</em>이 있다면 <code>value</code>의 값으로 지정된다.</li> + <li>Iterator(반복자)의 작업이 남아있을 경우 <code>false</code>. Iterator(반복자)에 <code>done</code> 프로퍼티 자체를 특정짓지 않은 것과 동일하다.</li> + </ul> + </li> + <li><code>value</code> - Iterator(반복자)으로부터 반환되는 모든 자바스크립트 값이며 <code>done</code>이 <code>true</code>일 경우 생략될 수 있다.</li> +</ul> + +<h2 id="예제">예제</h2> + +<h3 id="throw()_사용하기"><code>throw()</code> 사용하기</h3> + +<p>다음의 예시는 간단한 Generator 함수와 throw 메소드를 통해서 주입된 에러를 보여준다. 에러는 <code><a href="/en-US/docs/Web/JavaScript/Reference/Statements/try...catch">try...catch</a></code>블록을 통해서 핸들링 할 수 있다.</p> + +<pre class="brush: js">function* gen() { + while(true) { + try { + yield 42; + } catch(e) { + console.log("Error caught!"); + } + } +} + +var g = gen(); +g.next(); +// { value: 42, done: false } +g.throw(new Error("Something went wrong")); +// "Error caught!" +// { value: 42, done: 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('ES6', '#sec-generator.prototype.throw', 'Generator.prototype.throw')}}</td> + <td>{{Spec2('ES6')}}</td> + <td>Initial definition.</td> + </tr> + <tr> + <td>{{SpecName('ESDraft', '#sec-generator.prototype.throw', 'Generator.prototype.throw')}}</td> + <td>{{Spec2('ESDraft')}}</td> + <td> </td> + </tr> + </tbody> +</table> + +<h2 id="브라우저_호환성">브라우저 호환성</h2> + + + +<p>{{Compat("javascript.builtins.Generator.throw")}}</p> + +<h2 id="같이_보기">같이 보기</h2> + +<ul> + <li><code><a href="/ko/docs/Web/JavaScript/Reference/Statements/function*">function*</a></code></li> +</ul> |