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+---
+title: Number.isInteger()
+slug: Web/JavaScript/Reference/Global_Objects/Number/isInteger
+tags:
+  - JavaScript
+  - Method
+  - Number
+  - Reference
+translation_of: Web/JavaScript/Reference/Global_Objects/Number/isInteger
+---
+<div>{{JSRef}}</div>
+
+<p><strong><code>Number.isInteger()</code> </strong>메서드는 주어진 값이 정수인지 판별합니다.</p>
+
+<div>{{EmbedInteractiveExample("pages/js/number-isinteger.html")}}</div>
+
+
+
+<h2 id="구문">구문</h2>
+
+<pre class="syntaxbox">Number.isInteger(v<var>alue</var>)</pre>
+
+<h3 id="매개변수">매개변수</h3>
+
+<dl>
+ <dt><code>value</code></dt>
+ <dd>정수인지 확인하려는 값.</dd>
+</dl>
+
+<h3 id="반환_값">반환 값</h3>
+
+<p>주어진 값의 정수 여부를 나타내는 {{jsxref("Boolean")}}.</p>
+
+<h2 id="설명">설명</h2>
+
+<p>매개변수의 값이 정수면 <code>true</code>를, 아니면 <code>false</code>를 반환합니다. 값이 {{jsxref("NaN")}}이거나 {{jsxref("Infinity")}}여도 <code>false</code>를 반환합니다.</p>
+
+<h2 id="예제">예제</h2>
+
+<pre>Number.isInteger(0);         // true
+Number.isInteger(1);         // true
+Number.isInteger(-100000);   // true
+Number.isInteger(99999999999999999999999); // true
+
+Number.isInteger(0.1);       // false
+Number.isInteger(Math.PI);   // false
+
+Number.isInteger(NaN);       // false
+Number.isInteger(Infinity);  // false
+Number.isInteger(-Infinity); // false
+Number.isInteger('10');      // false
+Number.isInteger(true);      // false
+Number.isInteger(false);     // false
+Number.isInteger([1]);       // false
+</pre>
+
+<h2 id="폴리필">폴리필</h2>
+
+<pre class="brush: js">Number.isInteger = Number.isInteger || function(value) {
+  return typeof value === "number" &amp;&amp;
+    isFinite(value) &amp;&amp;
+    Math.floor(value) === value;
+};
+</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('ES6', '#sec-number.isinteger', 'Number.isInteger')}}</td>
+   <td>{{Spec2('ES6')}}</td>
+   <td>Initial definition.</td>
+  </tr>
+  <tr>
+   <td>{{SpecName('ESDraft', '#sec-number.isinteger', 'Number.isInteger')}}</td>
+   <td>{{Spec2('ESDraft')}}</td>
+   <td> </td>
+  </tr>
+ </tbody>
+</table>
+
+<h2 id="브라우저_호환성">브라우저 호환성</h2>
+
+<div>{{Compat("javascript.builtins.Number.isInteger")}}</div>
+
+<h2 id="같이_보기">같이 보기</h2>
+
+<ul>
+ <li>메서드가 속한 {{jsxref("Number")}} 객체.</li>
+</ul>