files/ko/web/javascript/reference/global_objects/date/toisostring/index.html


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---
title: Date.prototype.toISOString()
slug: Web/JavaScript/Reference/Global_Objects/Date/toISOString
tags:
  - Date
  - JavaScript
  - Method
  - Prototype
  - Reference
  - polyfill
translation_of: Web/JavaScript/Reference/Global_Objects/Date/toISOString
---
<div>{{JSRef}}</div>

<p><strong><code>toISOString()</code></strong> 메서드는 단순화한 확장 ISO 형식(<a href="http://en.wikipedia.org/wiki/ISO_8601">ISO 8601</a>)의 문자열을 반환합니다. 반환값은 언제나 24글자 또는 27글자(각각 <strong><code>YYYY-MM-DDTHH:mm:ss.sssZ</code></strong> 또는 <strong><code>±YYYYYY-MM-DDTHH:mm:ss.sssZ</code></strong>)입니다. 시간대는 언제나 UTC이며 접미어 "<code>Z</code>"로 표현합니다.</p>

<div>{{EmbedInteractiveExample("pages/js/date-toisostring.html")}}</div>


<h2 id="구문">구문</h2>

<pre class="syntaxbox"><code><var>dateObj</var>.toISOString()</code></pre>

<h3 id="반환_값">반환 값</h3>

<p>주어진 날짜를 국제표준시 기준 <a href="http://en.wikipedia.org/wiki/ISO_8601">ISO 8601</a> 형식으로 표현한 문자열.</p>

<h2 id="예제">예제</h2>

<h3 id="toISOString()_사용하기"><code>toISOString()</code> 사용하기</h3>

<p>아래 예제는 비표준 문자열의 분석을 포함하고 있어 비 Mozilla 브라우저에서는 올바르게 작동하지 않을 수 있습니다.</p>

<pre class="brush: js">const today = new Date('05 October 2011 14:48 UTC');

console.log(today.toISOString()); // Returns 2011-10-05T14:48:00.000Z</pre>

<h2 id="폴리필">폴리필</h2>

<p><code>toISOString</code>은 ECMA-262 제5판에 표준으로 자리잡았습니다. 아직 지원하지 않는 환경에서는 다음 코드를 추가해 대체할 수 있습니다.</p>

<pre class="brush: js">if (!Date.prototype.toISOString) {
  (function() {

    function pad(number) {
      if (number &lt; 10) {
        return '0' + number;
      }
      return number;
    }

    Date.prototype.toISOString = function() {
      return this.getUTCFullYear() +
        '-' + pad(this.getUTCMonth() + 1) +
        '-' + pad(this.getUTCDate()) +
        'T' + pad(this.getUTCHours()) +
        ':' + pad(this.getUTCMinutes()) +
        ':' + pad(this.getUTCSeconds()) +
        '.' + (this.getUTCMilliseconds() / 1000).toFixed(3).slice(2, 5) +
        'Z';
    };

  }());
}
</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('ES5.1', '#sec-15.9.5.43', 'Date.prototype.toISOString')}}</td>
   <td>{{Spec2('ES5.1')}}</td>
   <td>Initial definition. Implemented in JavaScript 1.8.</td>
  </tr>
  <tr>
   <td>{{SpecName('ES6', '#sec-date.prototype.toisostring', 'Date.prototype.toISOString')}}</td>
   <td>{{Spec2('ES6')}}</td>
   <td> </td>
  </tr>
  <tr>
   <td>{{SpecName('ESDraft', '#sec-date.prototype.toisostring', 'Date.prototype.toISOString')}}</td>
   <td>{{Spec2('ESDraft')}}</td>
   <td> </td>
  </tr>
 </tbody>
</table>

<h2 id="브라우저_호환성">브라우저 호환성</h2>

<p class="hidden">The compatibility table in this page is generated from structured data. If you'd like to contribute to the data, please check out <a href="https://github.com/mdn/browser-compat-data">https://github.com/mdn/browser-compat-data</a> and send us a pull request.</p>

<p>{{Compat("javascript.builtins.Date.toISOString")}}</p>

<h2 id="같이_보기">같이 보기</h2>

<ul>
 <li>{{jsxref("Date.prototype.toLocaleDateString()")}}</li>
 <li>{{jsxref("Date.prototype.toTimeString()")}}</li>
 <li>{{jsxref("Date.prototype.toUTCString()")}}</li>
</ul>