---
title: Date.prototype
slug: conflicting/Web/JavaScript/Reference/Global_Objects/Date
tags:
  - Date
  - JavaScript
  - Property
  - Prototype
  - Reference
translation_of: Web/JavaScript/Reference/Global_Objects/Date
translation_of_original: Web/JavaScript/Reference/Global_Objects/Date/prototype
original_slug: Web/JavaScript/Reference/Global_Objects/Date/prototype
---
<div>{{JSRef}}</div>

<p><strong><code>Date.prototype</code></strong> 속성은 {{jsxref("Date")}} 생성자의 프로토타입을 나타냅니다.</p>

<div>{{js_property_attributes(0, 0, 1)}}</div>

<h2 id="설명">설명</h2>

<p>JavaScript {{jsxref("Date")}} 인스턴스는 <code>Date.prototype</code>을 상속합니다. 생성자의 프로토타입을 변경해 모든 <code>Date</code> 인스턴스의 속성과 메서드를 수정할 수 있습니다.</p>

<p>2000년대 달력과의 호환성을 위해 연도는 언제나 완전하게 네 자리 숫자로 작성해야 합니다. 즉 98 대신 1998이 올바른 작성법입니다. <code>Date</code>는 완전한 연도 설정에 도움이 될 {{jsxref("Date.prototype.getFullYear()", "getFullYear()")}}, {{jsxref("Date.prototype.setFullYear()", "setFullYear()")}}, {{jsxref("Date.prototype.getUTCFullYear()", "getUTCFullYear()")}}, {{jsxref("Date.prototype.setUTCFullYear()", "setUTCFullYear()")}} 메서드를 가지고 있습니다.</p>

<p>ECMAScript 6부터 <code>Date.prototype</code>은 {{jsxref("Date")}} 인스턴스가 아닌 평범한 객체입니다.</p>

<h2 id="속성">속성</h2>

<dl>
 <dt><code>Date.prototype.constructor</code></dt>
 <dd>인스턴스 생성에 사용한 생성자를 반환합니다. 기본값은 {{jsxref("Date")}}입니다.</dd>
</dl>

<h2 id="메서드">메서드</h2>

<h3 id="접근자">접근자</h3>

<dl>
 <dt>{{jsxref("Date.prototype.getDate()")}}</dt>
 <dd>주어진 날짜의 일(1-31)을 현지 시간에 맞춰 반환합니다.</dd>
 <dt>{{jsxref("Date.prototype.getDay()")}}</dt>
 <dd>주어진 날짜의 요일(0-6)을 현지 시간에 맞춰 반환합니다.</dd>
 <dt>{{jsxref("Date.prototype.getFullYear()")}}</dt>
 <dd>주어진 날짜의 연도(4자리 수)를 현지 시간에 맞춰 반환합니다.</dd>
 <dt>{{jsxref("Date.prototype.getHours()")}}</dt>
 <dd>주어진 날짜의 시(0-23)를 현지 시간에 맞춰 반환합니다.</dd>
 <dt>{{jsxref("Date.prototype.getMilliseconds()")}}</dt>
 <dd>주어진 날짜의 밀리초(0-999)를 현지 시간에 맞춰 반환합니다.</dd>
 <dt>{{jsxref("Date.prototype.getMinutes()")}}</dt>
 <dd>주어진 날짜의 분(0-59)을 현지 시간에 맞춰 반환합니다.</dd>
 <dt>{{jsxref("Date.prototype.getMonth()")}}</dt>
 <dd>주어진 날짜의 월(0-11)을 현지 시간에 맞춰 반환합니다.</dd>
 <dt>{{jsxref("Date.prototype.getSeconds()")}}</dt>
 <dd>주어진 날짜의 초(0-59)를 현지 시간에 맞춰 반환합니다.</dd>
 <dt>{{jsxref("Date.prototype.getTime()")}}</dt>
 <dd>주어진 날짜와 1970년 1월 1일 0시 0분(UTC)의 차이를 밀리초로 반환합니다.</dd>
 <dt>{{jsxref("Date.prototype.getTimezoneOffset()")}}</dt>
 <dd>현재 로케일의 시간대 차이를 분으로 환산해 반환합니다.</dd>
 <dt>{{jsxref("Date.prototype.getUTCDate()")}}</dt>
 <dd>주어진 날짜의 일(1-31)을 UTC에 맞춰 반환합니다.</dd>
 <dt>{{jsxref("Date.prototype.getUTCDay()")}}</dt>
 <dd>주어진 날짜의 요일(0-6)을 UTC에 맞춰 반환합니다.</dd>
 <dt>{{jsxref("Date.prototype.getUTCFullYear()")}}</dt>
 <dd>주어진 날짜의 연도(4자리 수)를 UTC에 맞춰 반환합니다.</dd>
 <dt>{{jsxref("Date.prototype.getUTCHours()")}}</dt>
 <dd>주어진 날짜의 시(0-23)를 UTC에 맞춰 반환합니다.</dd>
 <dt>{{jsxref("Date.prototype.getUTCMilliseconds()")}}</dt>
 <dd>주어진 날짜의 밀리초(0-999)를 UTC에 맞춰 반환합니다.</dd>
 <dt>{{jsxref("Date.prototype.getUTCMinutes()")}}</dt>
 <dd>주어진 날짜의 분(0-59)을 UTC에 맞춰 반환합니다.</dd>
 <dt>{{jsxref("Date.prototype.getUTCMonth()")}}</dt>
 <dd>주어진 날짜의 월(0-11)을 UTC에 맞춰 반환합니다.</dd>
 <dt>{{jsxref("Date.prototype.getUTCSeconds()")}}</dt>
 <dd>주어진 날짜의 초(0-59)를 UTC에 맞춰 반환합니다.</dd>
 <dt>{{jsxref("Date.prototype.getYear()")}} {{deprecated_inline}}</dt>
 <dd>주어진 날짜의 연도(주로 두세자리 숫자)를 현지 시간에 맞춰 반환합니다. {{jsxref("Date.prototype.getFullYear()", "getFullYear()")}}를 사용하세요.</dd>
</dl>

<h3 id="설정자">설정자</h3>

<dl>
 <dt>{{jsxref("Date.prototype.setDate()")}}</dt>
 <dd>Sets the day of the month for a specified date according to local time.</dd>
 <dt>{{jsxref("Date.prototype.setFullYear()")}}</dt>
 <dd>Sets the full year (e.g. 4 digits for 4-digit years) for a specified date according to local time.</dd>
 <dt>{{jsxref("Date.prototype.setHours()")}}</dt>
 <dd>Sets the hours for a specified date according to local time.</dd>
 <dt>{{jsxref("Date.prototype.setMilliseconds()")}}</dt>
 <dd>Sets the milliseconds for a specified date according to local time.</dd>
 <dt>{{jsxref("Date.prototype.setMinutes()")}}</dt>
 <dd>Sets the minutes for a specified date according to local time.</dd>
 <dt>{{jsxref("Date.prototype.setMonth()")}}</dt>
 <dd>Sets the month for a specified date according to local time.</dd>
 <dt>{{jsxref("Date.prototype.setSeconds()")}}</dt>
 <dd>Sets the seconds for a specified date according to local time.</dd>
 <dt>{{jsxref("Date.prototype.setTime()")}}</dt>
 <dd>Sets the {{jsxref("Date")}} object to the time represented by a number of milliseconds since January 1, 1970, 00:00:00 UTC, allowing for negative numbers for times prior.</dd>
 <dt>{{jsxref("Date.prototype.setUTCDate()")}}</dt>
 <dd>Sets the day of the month for a specified date according to universal time.</dd>
 <dt>{{jsxref("Date.prototype.setUTCFullYear()")}}</dt>
 <dd>Sets the full year (e.g. 4 digits for 4-digit years) for a specified date according to universal time.</dd>
 <dt>{{jsxref("Date.prototype.setUTCHours()")}}</dt>
 <dd>Sets the hour for a specified date according to universal time.</dd>
 <dt>{{jsxref("Date.prototype.setUTCMilliseconds()")}}</dt>
 <dd>Sets the milliseconds for a specified date according to universal time.</dd>
 <dt>{{jsxref("Date.prototype.setUTCMinutes()")}}</dt>
 <dd>Sets the minutes for a specified date according to universal time.</dd>
 <dt>{{jsxref("Date.prototype.setUTCMonth()")}}</dt>
 <dd>Sets the month for a specified date according to universal time.</dd>
 <dt>{{jsxref("Date.prototype.setUTCSeconds()")}}</dt>
 <dd>Sets the seconds for a specified date according to universal time.</dd>
 <dt>{{jsxref("Date.prototype.setYear()")}} {{deprecated_inline}}</dt>
 <dd>Sets the year (usually 2-3 digits) for a specified date according to local time. Use {{jsxref("Date.prototype.setFullYear()", "setFullYear()")}} instead.</dd>
</dl>

<h3 id="변환_접근자">변환 접근자</h3>

<dl>
 <dt>{{jsxref("Date.prototype.toDateString()")}}</dt>
 <dd>Returns the "date" portion of the {{jsxref("Date")}} as a human-readable string like 'Thu Apr 12 2018'</dd>
 <dt>{{jsxref("Date.prototype.toISOString()")}}</dt>
 <dd>Converts a date to a string following the ISO 8601 Extended Format.</dd>
 <dt>{{jsxref("Date.prototype.toJSON()")}}</dt>
 <dd>Returns a string representing the {{jsxref("Date")}} using {{jsxref("Date.prototype.toISOString()", "toISOString()")}}. Intended for use by {{jsxref("JSON.stringify()")}}.</dd>
 <dt>{{jsxref("Date.prototype.toGMTString()")}} {{deprecated_inline}}</dt>
 <dd>Returns a string representing the {{jsxref("Date")}} based on the GMT (UT) time zone. Use {{jsxref("Date.prototype.toUTCString()", "toUTCString()")}} instead.</dd>
 <dt>{{jsxref("Date.prototype.toLocaleDateString()")}}</dt>
 <dd>Returns a string with a locality sensitive representation of the date portion of this date based on system settings.</dd>
 <dt>{{jsxref("Date.prototype.toLocaleFormat()")}} {{non-standard_inline}}</dt>
 <dd>Converts a date to a string, using a format string.</dd>
 <dt>{{jsxref("Date.prototype.toLocaleString()")}}</dt>
 <dd>Returns a string with a locality sensitive representation of this date. Overrides the {{jsxref("Object.prototype.toLocaleString()")}} method.</dd>
 <dt>{{jsxref("Date.prototype.toLocaleTimeString()")}}</dt>
 <dd>Returns a string with a locality sensitive representation of the time portion of this date based on system settings.</dd>
 <dt>{{jsxref("Date.prototype.toSource()")}} {{non-standard_inline}}</dt>
 <dd>Returns a string representing the source for an equivalent {{jsxref("Date")}} object; you can use this value to create a new object. Overrides the {{jsxref("Object.prototype.toSource()")}} method.</dd>
 <dt>{{jsxref("Date.prototype.toString()")}}</dt>
 <dd>Returns a string representing the specified {{jsxref("Date")}} object. Overrides the {{jsxref("Object.prototype.toString()")}} method.</dd>
 <dt>{{jsxref("Date.prototype.toTimeString()")}}</dt>
 <dd>Returns the "time" portion of the {{jsxref("Date")}} as a human-readable string.</dd>
 <dt>{{jsxref("Date.prototype.toUTCString()")}}</dt>
 <dd>Converts a date to a string using the UTC timezone.</dd>
 <dt>{{jsxref("Date.prototype.valueOf()")}}</dt>
 <dd>Returns the primitive value of a {{jsxref("Date")}} object. Overrides the {{jsxref("Object.prototype.valueOf()")}} method.</dd>
</dl>

<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('ES1')}}</td>
   <td>{{Spec2('ES1')}}</td>
   <td>Initial definition. Implemented in JavaScript 1.1.</td>
  </tr>
  <tr>
   <td>{{SpecName('ES5.1', '#sec-15.9.5', 'Date.prototype')}}</td>
   <td>{{Spec2('ES5.1')}}</td>
   <td> </td>
  </tr>
  <tr>
   <td>{{SpecName('ES6', '#sec-properties-of-the-date-prototype-object', 'Date.prototype')}}</td>
   <td>{{Spec2('ES6')}}</td>
   <td> </td>
  </tr>
  <tr>
   <td>{{SpecName('ESDraft', '#sec-properties-of-the-date-prototype-object', 'Date.prototype')}}</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.prototype")}}</p>