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authorFlorian Merz <me@fiji-flo.de>2021-02-11 14:45:12 +0100
committerFlorian Merz <me@fiji-flo.de>2021-02-11 14:45:12 +0100
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+---
+title: Number.POSITIVE_INFINITY
+slug: Web/JavaScript/Referencia/Objectes_globals/Number/POSITIVE_INFINITY
+translation_of: Web/JavaScript/Reference/Global_Objects/Number/POSITIVE_INFINITY
+---
+<div>{{JSRef}}</div>
+
+<p>La propietat <strong><code>Number.POSITIVE_INFINITY</code></strong> representa el valor infinit negatiu.</p>
+
+<p>No fa falta crear un objecte {{jsxref("Global_Objects/Number", "Number")}} per accedir a aquesta propietat estàtica (feu servir <code>Number.POSITIVE_INFINITY</code>).</p>
+
+<div>{{js_property_attributes(0, 0, 0)}}</div>
+
+<h2 id="Descripció">Descripció</h2>
+
+<p>El valor de <code>Number.POSITIVE_INFINITY</code> és el mateix que el valor negatiu de la propietat de l'objecte global {{jsxref("Infinity")}}.</p>
+
+<p> </p>
+
+<p>Aquest valor es comporta de forma una mica diferent a l'infinit matemàtic<u>:</u></p>
+
+<p>Qualsevol valor positiu, incloent <code>POSITIVE_INFINITY</code>, multiplicat per <code>POSITIVE_INFINITY</code> és <code>POSITIVE_INFINITY</code>.</p>
+
+<ul>
+ <li>Qualsevol calor negatiu, incloent <code>NEGATIVE_INFINITY</code>, multiplicat per <code>POSITIVE_INFINITY</code> és {{jsxref("Number.<code>NEGATIVE</code>_INFINITY", "POSITIVE_INFINITY")}}.</li>
+ <li>Zero multiplicat per<code> POSITIVE_INFINITY</code> és {{jsxref("NaN")}}.</li>
+ <li>{{jsxref("Global_Objects/NaN", "NaN")}} multiplicat per<code>POSITIVE_INFINITY</code> és {{jsxref("NaN")}}.</li>
+ <li><code>POSITIVE_INFINITY</code>, dividit per quaulsevol valor negatiu execepte {{jsxref("Number.NEGATIVE_INFINITY", "NEGATIVE_INFINITY")}}, és {{jsxref("Number.NEGATIVE_INFINITY", "NEGATIVE_INFINITY")}}.</li>
+ <li><code>POSITIVE_INFINITY</code>, dividit per un valor positiu a excepció de<code> POSITIVE_INFINITY</code>, és <code>POSITIVE_INFINITY</code>.</li>
+ <li><code>POSITIVE_INFINITY</code>, dividit per {{jsxref("Number.NEGATIVE_INFINITY", "NEGATIVE_INFINITY")}} o bé per <code>POSITIVE_INFINITY</code>, és {{jsxref("NaN")}}.</li>
+ <li>Quasevol nombre dividit per<code> POSITIVE_INFINITY</code> és Zero.</li>
+</ul>
+
+<p>Es pot fer serivir la propietat <code>Number.POSITIVE_INFINITY</code> per indicar una condició d'error que retorna un nombre finit en cas d'èxit. Fixeu-vos, però, que {{jsxref("isFinite")}} seria més apropiat en aquest cas.</p>
+
+<h2 id="Exemples">Exemples</h2>
+
+<h3 id="Utilitzar_POSITIVE_INFINITY">Utilitzar <code>POSITIVE_INFINITY</code></h3>
+
+<p>In the following example, the variable <code>bigNumber</code> is assigned a value that is larger than the maximum value. When the {{jsxref("Statements/if...else", "if")}} statement executes, <code>bigNumber</code> has the value <code>Infinity</code>, so <code>bigNumber</code> is set to a more manageable value before continuing.</p>
+
+<p>A l'exemple següent, a la variable <code>nombrePetit</code> se li assigna un valor que és més gran que el valor màxim. Quan la declaració {{jsxref("Statements/if...else", "if")}} s'executa, <code>nombrePetit</code> té el valor <code>Infinity</code>, així <code>nombrePetit</code> s'estableix com a un valor més manegable abans de prosseguir.</p>
+
+<pre class="brush: js">var nombrePetit = Number.MAX_VALUE * 2;
+
+if (nombrePetit == Number.POSITIVE_INFINITY) {
+ nombrePetit= returnFinite();
+}
+</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('ES1')}}</td>
+ <td>{{Spec2('ES1')}}</td>
+ <td>Definició inicial. Implementat a JavaScript 1.1.</td>
+ </tr>
+ <tr>
+ <td>{{SpecName('ES5.1', '#sec-15.7.3.6', 'Number.POSITIVE_INFINITY')}}</td>
+ <td>{{Spec2('ES5.1')}}</td>
+ <td> </td>
+ </tr>
+ <tr>
+ <td>{{SpecName('ES6', '#sec-number.positive_infinity', 'Number.POSITIVE_INFINITY')}}</td>
+ <td>{{Spec2('ES6')}}</td>
+ <td> </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>{{CompatVersionUnknown}}</td>
+ <td>{{CompatVersionUnknown}}</td>
+ <td>{{CompatVersionUnknown}}</td>
+ <td>{{CompatVersionUnknown}}</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>{{CompatVersionUnknown}}</td>
+ <td>{{CompatVersionUnknown}}</td>
+ <td>{{CompatVersionUnknown}}</td>
+ <td>{{CompatVersionUnknown}}</td>
+ <td>{{CompatVersionUnknown}}</td>
+ <td>{{CompatVersionUnknown}}</td>
+ </tr>
+ </tbody>
+</table>
+</div>
+
+<h2 id="Vegeu_també">Vegeu també</h2>
+
+<ul>
+ <li>{{jsxref("Number.NEGATIVE_INFINITY")}}</li>
+ <li>{{jsxref("Number.isFinite()")}}</li>
+ <li>{{jsxref("Infinity")}}</li>
+ <li>{{jsxref("Global_Objects/isFinite", "isFinite()")}}</li>
+</ul>