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+---
+title: Number.isFinite()
+slug: Web/JavaScript/Reference/Global_Objects/Number/isFinite
+tags:
+  - JavaScript
+  - Method
+  - Number
+  - Reference
+translation_of: Web/JavaScript/Reference/Global_Objects/Number/isFinite
+---
+<div>{{JSRef}}</div>
+
+<p><strong><code>Number.isFinite()</code></strong> 메서드는 주어진 값이 유한수인지 판별합니다.</p>
+
+<div>{{EmbedInteractiveExample("pages/js/number-isfinite.html")}}</div>
+
+
+
+<h2 id="구문">구문</h2>
+
+<pre class="syntaxbox">Number.isFinite(<var>value</var>)</pre>
+
+<h3 id="매개변수">매개변수</h3>
+
+<dl>
+ <dt><code>value</code></dt>
+ <dd>유한수인지 판별할 값.</dd>
+</dl>
+
+<h3 id="반환_값">반환 값</h3>
+
+<p>유한수 여부에 대한 {{jsxref("Boolean")}} 값.</p>
+
+<h2 id="설명">설명</h2>
+
+<p>전역 함수 {{jsxref("isFinite", "isFinite()")}}와 비교했을 때, <code>Number.isFinite()</code> 메서드는 매개변수를 숫자로 변환하지 않습니다. 즉 값이 숫자이며 동시에 유한수일 때만 <code>true</code>를 반환합니다.</p>
+
+<h2 id="예제">예제</h2>
+
+<pre class="brush: js">Number.isFinite(Infinity);  // false
+Number.isFinite(NaN);       // false
+Number.isFinite(-Infinity); // false
+
+Number.isFinite(0);         // true
+Number.isFinite(2e64);      // true
+
+Number.isFinite('0');       // false
+                            // 전역함수 isFinite('0')라면 true
+Number.isFinite(null);      // false
+                            // 전역함수 isFinite(null)라면 true
+</pre>
+
+<h2 id="폴리필">폴리필</h2>
+
+<pre class="brush: js">if (Number.isFinite === undefined) Number.isFinite = function(value) {
+    return typeof value === 'number' &amp;&amp; isFinite(value);
+}</pre>
+
+<h2 id="명세">명세</h2>
+
+<table class="standard-table">
+ <tbody>
+  <tr>
+   <th scope="col">스펙</th>
+   <th scope="col">상태</th>
+   <th scope="col">설명</th>
+  </tr>
+  <tr>
+   <td>{{SpecName('ES6', '#sec-number.isfinite', 'Number.isInteger')}}</td>
+   <td>{{Spec2('ES6')}}</td>
+   <td>초기 정의.</td>
+  </tr>
+  <tr>
+   <td>{{SpecName('ESDraft', '#sec-number.isfinite', 'Number.isInteger')}}</td>
+   <td>{{Spec2('ESDraft')}}</td>
+   <td> </td>
+  </tr>
+ </tbody>
+</table>
+
+<h2 id="브라우저_호환성">브라우저 호환성</h2>
+
+<div>{{Compat("javascript.builtins.Number.isFinite")}}</div>
+
+<h2 id="같이_보기">같이 보기</h2>
+
+<ul>
+ <li>메서드가 속한 {{jsxref("Number")}} 객체.</li>
+ <li>전역 함수 {{jsxref("isFinite")}}.</li>
+</ul>