Revision 1126461 of ConstrainLong

<div>{{APIRef("Media Capture and Streams")}}</div>

<p>The <strong><code>ConstrainLongRange</code></strong> dictionary is used to specify a constraint for a property whose value is an integral number. It extends the {{domxref("LongRange")}} dictionary (which provides the ability to specify a permitted range of property values) to also support an exact value and/or an ideal value the property should take on.</p>

<h2 id="Properties">Properties</h2>

<p><em>In addition to the properties below, the properties of {{domxref("LongRange")}} are also available.</em></p>

<dl>
 <dt><code>exact</code></dt>
 <dd>An integer specifying precise, required, value the property must have to be considered acceptable.</dd>
 <dt><code>ideal</code></dt>
 <dd>An integer specifying a value the property would ideally have, but which can be considered optional if necessary to find a match.</dd>
</dl>

<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('Media Capture', '#idl-def-ConstrainLongRange', 'ConstrainLongRange')}}</td>
   <td>{{Spec2('Media Capture')}}</td>
   <td>Initial definition</td>
  </tr>
 </tbody>
</table>

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

<div>{{CompatibilityTable}}</div>

<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>Microsoft Edge</th>
   <th>Opera</th>
   <th>Safari (WebKit)</th>
  </tr>
  <tr>
   <td>Basic support</td>
   <td>{{CompatVersionUnknown}}</td>
   <td>{{CompatGeckoDesktop(50)}}</td>
   <td>{{CompatNo}}</td>
   <td>{{CompatUnknown}}</td>
   <td>{{CompatNo}}</td>
   <td>{{CompatUnknown}}</td>
  </tr>
 </tbody>
</table>
</div>

<div id="compat-mobile">
<table class="compat-table">
 <tbody>
  <tr>
   <th>Feature</th>
   <th>Android</th>
   <th>Android Webview</th>
   <th>Firefox Mobile (Gecko)</th>
   <th>IE Phone</th>
   <th>Opera Mobile</th>
   <th>Safari Mobile</th>
   <th>Chrome for Android</th>
  </tr>
  <tr>
   <td>Basic support</td>
   <td>{{CompatUnknown}}</td>
   <td>{{CompatVersionUnknown}}</td>
   <td>{{CompatGeckoMobile(50)}}</td>
   <td>{{CompatNo}}</td>
   <td>{{CompatNo}}</td>
   <td>{{CompatUnknown}}</td>
   <td>{{CompatVersionUnknown}}</td>
  </tr>
 </tbody>
</table>
</div>

<h2 id="See_also">See also</h2>

<ul>
 <li><a href="/en-US/docs/Web/API/Media_Streams_API">Media Capture and Streams API</a></li>
 <li><a href="/en-US/docs/Web/API/Media_Streams_API/Constraints">Capabilities, constraints, and settings</a></li>
 <li>{{domxref("LongRange")}}</li>
 <li>{{domxref("MediaTrackConstraints")}}</li>
 <li>{{domxref("MediaTrackCapabilities")}}</li>
 <li>{{domxref("MediaTrackSupportedConstraints")}}</li>
</ul>