Revision 841119 of Infinity

<div>{{jsSidebar("Objects")}}</div>

<p>The global <code><strong>Infinity</strong></code> property is a numeric value representing infinity.</p>

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

<h2 id="Syntax">Syntax</h2>

<pre class="syntaxbox">
<code>Infinity </code></pre>

<h2 id="Description">Description</h2>

<p><code>Infinity</code> is a property of the <em>global object</em>, i.e. it is a variable in global scope.</p>

<p>The initial value of <code>Infinity</code> is {{jsxref("Number.POSITIVE_INFINITY")}}. The value <code>Infinity</code> (positive infinity) is greater than any other number. This value behaves mathematically like infinity; for example, any positive number multiplied by <code>Infinity</code> is <code>Infinity</code>, and anything divided by <code>Infinity</code> is 0.</p>

<p>Per the ECMAScript 5 specification, <code>Infinity</code> is read only (implemented in JavaScript 1.8.5 / Firefox 4).</p>

<h2 id="Specifications">Specifications</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('ES1')}}</td>
   <td>{{Spec2('ES1')}}</td>
   <td>Initial definition. Implemented in JavaScript 1.3</td>
  </tr>
  <tr>
   <td>{{SpecName('ES5.1', '#sec-15.1.1.2', 'Infinity')}}</td>
   <td>{{Spec2('ES5.1')}}</td>
   <td>&nbsp;</td>
  </tr>
  <tr>
   <td>{{SpecName('ES6', '#sec-value-properties-of-the-global-object-infinity', 'Infinity')}}</td>
   <td>{{Spec2('ES6')}}</td>
   <td>&nbsp;</td>
  </tr>
 </tbody>
</table>

<h2 id="Browser_compatibility">Browser compatibility</h2>

<p>{{CompatibilityTable}}</p>

<div id="compat-desktop">
<table class="compat-table">
 <tbody>
  <tr>
   <th>Feature</th>
   <th>Chrome</th>
   <th>Firefox (Gecko)</th>
   <th>Internet Explorer</th>
   <th>Opera</th>
   <th>Safari</th>
  </tr>
  <tr>
   <td>Basic support</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>Feature</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>Basic support</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="See_also">See also</h2>

<ul>
 <li>{{jsxref("Number.NEGATIVE_INFINITY")}}</li>
 <li>{{jsxref("Number.POSITIVE_INFINITY")}}</li>
</ul>