From da78a9e329e272dedb2400b79a3bdeebff387d47 Mon Sep 17 00:00:00 2001
From: Peter Bengtsson <mail@peterbe.com>
Date: Tue, 8 Dec 2020 14:42:17 -0500
Subject: initial commit

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(limited to 'files/ko/web/javascript/reference/global_objects/string/touppercase')

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+---
+title: String.prototype.toUpperCase()
+slug: Web/JavaScript/Reference/Global_Objects/String/toUpperCase
+tags:
+  - JavaScript
+  - Method
+  - Prototype
+  - Reference
+  - String
+translation_of: Web/JavaScript/Reference/Global_Objects/String/toUpperCase
+---
+<div>{{JSRef}}</div>
+
+<p><strong><code>toUpperCase()</code></strong> 메서드는 문자열을 대문자로 변환해 반환합니다.</p>
+
+<div>{{EmbedInteractiveExample("pages/js/string-touppercase.html")}}</div>
+
+
+
+<h2 id="구문">구문</h2>
+
+<pre class="syntaxbox"><var>str</var>.toUpperCase()</pre>
+
+<h3 id="반환_값">반환 값</h3>
+
+<p>대문자로 변환한 새로운 문자열.</p>
+
+<h3 id="예외">예외</h3>
+
+<dl>
+ <dt>{{jsxref("TypeError")}}</dt>
+ <dd>{{jsxref("Function.prototype.call()")}} 등을 사용해 {{jsxref("null")}}이나 {{jsxref("undefined")}}에서 호출 시.</dd>
+</dl>
+
+<h2 id="설명">설명</h2>
+
+<p><code>toUpperCase()</code> 메서드는 문자열을 대문자로 변환한 값을 반환합니다. JavaScript의 문자열은 불변하므로 원본 문자열에는 영향을 주지 않습니다.</p>
+
+<h2 id="예제">예제</h2>
+
+<h3 id="기본_사용법">기본 사용법</h3>
+
+<pre class="brush: js">console.log('alphabet'.toUpperCase()); // 'ALPHABET'</pre>
+
+<h3 id="문자열이_아닌_this의_문자열_변환">문자열이 아닌 <code>this</code>의 문자열 변환</h3>
+
+<p><code>toUpperCase()</code>의 <code>this</code>가 문자열이 아니고, <code>undefined</code>와 <code>null</code>도 아니면 자동으로 문자열로 변환합니다.</p>
+
+<pre class="brush: js">const a = String.prototype.toUpperCase.call({
+  toString: function toString() {
+    return 'abcdef';
+  }
+});
+
+const b = String.prototype.toUpperCase.call(true);
+
+// prints out 'ABCDEF TRUE'.
+console.log(a, b);
+</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">비고</th>
+  </tr>
+  <tr>
+   <td>{{SpecName('ES1')}}</td>
+   <td>{{Spec2('ES1')}}</td>
+   <td>Initial definition. Implemented in JavaScript 1.0.</td>
+  </tr>
+  <tr>
+   <td>{{SpecName('ES5.1', '#sec-15.5.4.18', 'String.prototype.toUpperCase')}}</td>
+   <td>{{Spec2('ES5.1')}}</td>
+   <td> </td>
+  </tr>
+  <tr>
+   <td>{{SpecName('ES6', '#sec-string.prototype.touppercase', 'String.prototype.toUpperCase')}}</td>
+   <td>{{Spec2('ES6')}}</td>
+   <td> </td>
+  </tr>
+  <tr>
+   <td>{{SpecName('ESDraft', '#sec-string.prototype.touppercase', 'String.prototype.toUpperCase')}}</td>
+   <td>{{Spec2('ESDraft')}}</td>
+   <td> </td>
+  </tr>
+ </tbody>
+</table>
+
+<h2 id="브라우저_호환성">브라우저 호환성</h2>
+
+
+
+<p>{{Compat("javascript.builtins.String.toUpperCase")}}</p>
+
+<h2 id="같이_보기">같이 보기</h2>
+
+<ul>
+ <li>{{jsxref("String.prototype.toLocaleLowerCase()")}}</li>
+ <li>{{jsxref("String.prototype.toLocaleUpperCase()")}}</li>
+ <li>{{jsxref("String.prototype.toLowerCase()")}}</li>
+</ul>
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