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---
title: Date.now()
slug: Web/JavaScript/Reference/Global_Objects/Date/now
translation_of: Web/JavaScript/Reference/Global_Objects/Date/now
---
<div>{{JSRef}}</div>
<p><strong><code>Date.now()</code></strong> 메소드는 UTC 기준으로 1970년 1월 1일 0시 0분 0초부터 현재까지 경과된 밀리 초를 반환합니다.</p>
<h2 id="문법">문법</h2>
<pre class="syntaxbox"><code>var timeInMs = Date.now();</code></pre>
<h3 id="인자">인자</h3>
<p>없음</p>
<h2 id="설명">설명</h2>
<p>now() 메소드는 1970년 1월 1일 0시 0분 0초부터 현재까지 경과된 밀리 초를 {{jsxref("Number")}} 형으로 반환합니다.</p>
<p>now()는 {{jsxref("Date")}}의 정적 메소드이기 때문에, 항상 <code>Date.now() 처럼 사용하셔야 합니다.</code></p>
<h2 id="Polyfill">Polyfill</h2>
<p>이 메소든는 ECMA-262 5판에서 표준화되었습니다. 아직 이 메소드를 지원하도록 갱신되지 않은 엔진들은 이 메소드의 미지원에 대한 차선책으로 다음 코드를 활용하실 수 있습니다.</p>
<pre class="brush: js">if (!Date.now) {
Date.now = function now() {
return new Date().getTime();
};
}
</pre>
<h2 id="Specifications">Specifications</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-15.9.4.4', 'Date.now')}}</td>
<td>{{Spec2('ES5.1')}}</td>
<td>Initial definition. Implemented in JavaScript 1.5.</td>
</tr>
<tr>
<td>{{SpecName('ES6', '#sec-date.now', 'Date.now')}}</td>
<td>{{Spec2('ES6')}}</td>
<td> </td>
</tr>
<tr>
<td>{{SpecName('ESDraft', '#sec-date.now', 'Date.now')}}</td>
<td>{{Spec2('ESDraft')}}</td>
<td> </td>
</tr>
</tbody>
</table>
<h2 id="Browser_compatibility">Browser compatibility</h2>
<div>{{CompatibilityTable}}</div>
<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("5")}}</td>
<td>{{CompatGeckoDesktop("1.9")}}</td>
<td>{{CompatIE("9")}}</td>
<td>{{CompatOpera("10.50")}}</td>
<td>{{CompatSafari("4")}}</td>
</tr>
</tbody>
</table>
</div>
<div id="compat-mobile">
<table class="compat-table">
<tbody>
<tr>
<th>Feature</th>
<th>Android</th>
<th>Chrome for Android</th>
<th>Firefox Mobile (Gecko)</th>
<th>IE Mobile</th>
<th>Opera Mobile</th>
<th>Safari Mobile</th>
</tr>
<tr>
<td>Basic support</td>
<td>{{CompatVersionUnknown}}</td>
<td>{{CompatVersionUnknown}}</td>
<td>{{CompatVersionUnknown}}</td>
<td>{{CompatVersionUnknown}}</td>
<td>{{CompatVersionUnknown}}</td>
<td>{{CompatVersionUnknown}}</td>
</tr>
</tbody>
</table>
</div>
<h2 id="See_also">See also</h2>
<ul>
<li>{{domxref("Performance.now()")}} — provides timestamps with sub-millisecond resolution for use in measuring web page performance</li>
<li>{{domxref("console.time()")}} / {{domxref("console.timeEnd()")}}</li>
</ul>
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