---
title: Math.SQRT2
slug: Web/JavaScript/Reference/Global_Objects/Math/SQRT2
translation_of: Web/JavaScript/Reference/Global_Objects/Math/SQRT2
---
<div>{{JSRef}}</div>

<p> <strong><code>Math.SQRT2</code></strong> 는 2의 제곱근을 나타내고 약 1.414 입니다:</p>

<p><math display="block"><semantics><mrow><mstyle mathvariant="monospace"><mi>Math.SQRT2</mi></mstyle><mo>=</mo><msqrt><mn>2</mn></msqrt><mo>≈</mo><mn>1.414</mn></mrow><annotation encoding="TeX">\mathtt{\mi{Math.SQRT2}} = \sqrt{2} \approx 1.414</annotation></semantics></math></p>

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

<h2 id="설명">설명</h2>

<p> <code>SQRT2</code> 는  <code>Math</code>의 정적 메서드 이므로 만든 <code>Math</code> 객체의 메서드가 아니라 항상 <code>Math.SQRT2</code> 함수를 사용해야합니다.  (<code>Math</code>는 생성자가 없습니다.)</p>

<h2 id="예제">예제</h2>

<h3 id="Math.SQRT2"><code>Math.SQRT2</code></h3>

<p>이 함수는 2의 제곱근을 반환합니다.</p>

<pre class="brush: js">function getRoot2() {
  return Math.SQRT2;
}

getRoot2(); // 1.4142135623730951
</pre>

<h2 id="표준">표준</h2>

<table class="standard-table">
 <tbody>
  <tr>
   <th scope="col">표준</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-15.8.1.8', 'Math.SQRT2')}}</td>
   <td>{{Spec2('ES5.1')}}</td>
   <td> </td>
  </tr>
  <tr>
   <td>{{SpecName('ES6', '#sec-math.sqrt2', 'Math.SQRT2')}}</td>
   <td>{{Spec2('ES6')}}</td>
   <td> </td>
  </tr>
  <tr>
   <td>{{SpecName('ESDraft', '#sec-math.sqrt2', 'Math.SQRT2')}}</td>
   <td>{{Spec2('ESDraft')}}</td>
   <td> </td>
  </tr>
 </tbody>
</table>

<h2 id="브라우저_호환성">브라우저 호환성</h2>

<p>{{Compat("javascript.builtins.Math.SQRT2")}}</p>

<h2 id="참조">참조</h2>

<ul>
 <li>{{jsxref("Math.pow()")}}</li>
 <li>{{jsxref("Math.sqrt()")}}</li>
</ul>