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+---
+title: Number.isInteger()
+slug: Web/JavaScript/Reference/Global_Objects/Number/isInteger
+translation_of: Web/JavaScript/Reference/Global_Objects/Number/isInteger
+original_slug: Web/JavaScript/Referencia/Objectes_globals/Number/isInteger
+---
+<div>{{JSRef}}</div>
+
+<p>El mètode<strong> <code>Number.isInteger()</code></strong> determina si el valor que se li passa és un nombre sencer.</p>
+
+<h2 id="Sintaxi">Sintaxi</h2>
+
+<pre class="syntaxbox"><code>Number.isInteger(valor)</code></pre>
+
+<h3 id="Paràmetres">Paràmetres</h3>
+
+<dl>
+ <dt><code>valor</code></dt>
+ <dd>El valor que serà comprovat si és sencer o no.</dd>
+</dl>
+
+<h2 id="Descripció">Descripció</h2>
+
+<p>Si el valor passat és un nombre sencer, la funció retornarà <code>true</code>, en cas contrari es retorna <code>false</code>. Si el valor és {{jsxref("Global_Objects/NaN", "NaN")}} o infinit, es retorna <code>false</code>.</p>
+
+<h2 id="Exemples">Exemples</h2>
+
+<pre class="brush: js">Number.isInteger(0.1); // false
+Number.isInteger(1); // true
+Number.isInteger(Math.PI); // false
+Number.isInteger(-100000); // true
+Number.isInteger(NaN); // false
+Number.isInteger(0); // true
+Number.isInteger("10"); // false
+</pre>
+
+<h2 id="Polyfill">Polyfill</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="Especificacions">Especificacions</h2>
+
+<table class="standard-table">
+ <tbody>
+ <tr>
+ <th scope="col">Especificació</th>
+ <th scope="col">Estat</th>
+ <th scope="col">Comentaris</th>
+ </tr>
+ <tr>
+ <td>{{SpecName('ES6', '#sec-number.isinteger', 'Number.isInteger')}}</td>
+ <td>{{Spec2('ES6')}}</td>
+ <td>Definició inicial.</td>
+ </tr>
+ </tbody>
+</table>
+
+<h2 id="Compatibilitat_amb_navegadors">Compatibilitat amb navegadors</h2>
+
+<div>{{CompatibilityTable}}</div>
+
+<div id="compat-desktop">
+<table class="compat-table">
+ <tbody>
+ <tr>
+ <th>Característica</th>
+ <th>Chrome</th>
+ <th>Firefox (Gecko)</th>
+ <th>Internet Explorer</th>
+ <th>Opera</th>
+ <th>Safari</th>
+ </tr>
+ <tr>
+ <td>Suport bàsic</td>
+ <td>{{CompatVersionUnknown}}</td>
+ <td>{{CompatGeckoDesktop("16")}}</td>
+ <td>{{CompatNo}}</td>
+ <td>{{CompatVersionUnknown}}</td>
+ <td>{{CompatNo}}</td>
+ </tr>
+ </tbody>
+</table>
+</div>
+
+<div id="compat-mobile">
+<table class="compat-table">
+ <tbody>
+ <tr>
+ <th>Característica</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>Suport bàsic</td>
+ <td>{{CompatNo}}</td>
+ <td>{{CompatNo}}</td>
+ <td>{{CompatGeckoMobile("16")}}</td>
+ <td>{{CompatNo}}</td>
+ <td>{{CompatNo}}</td>
+ <td>{{CompatNo}}</td>
+ </tr>
+ </tbody>
+</table>
+</div>
+
+<h2 id="Vegeu_també">Vegeu també</h2>
+
+<ul>
+ <li>L'objecte {{jsxref("Global_Objects/Number", "Number")}} al que pertany.</li>
+</ul>