Revision 455257 of DOMImplementation

<p>The <code><strong>DOMImplementation</strong></code> interface represent an object providing methods which are not dependent on any particular document. Such an object is returned by the {{domxref("Document.implementation")}} property.</p>
<h2 id="Property">Property</h2>
<p><em>This interface has no specific property and doesn't inherit any.</em></p>
<h2 id="Methods">Methods</h2>
<p><em>No inherited method.</em></p>
<dl>
  <dt>
    {{domxref("DOMImplementation.createDocument")}}</dt>
  <dd>
    Creates and returns an {{domxref("XMLDocument")}}.</dd>
  <dt>
    {{domxref("DOMImplementation.createDocumentType")}}</dt>
  <dd>
    Creates and returns a {{domxref("DocumentType")}}.</dd>
  <dt>
    {{domxref("DOMImplementation.createHTMLDocument")}}</dt>
  <dd>
    Creates and returns an HTML {{domxref("Document")}}.</dd>
  <dt>
    {{domxref("DOMImplementation.hasFeature")}}</dt>
  <dd>
    Returns a {{domxref("Boolean")}} indicating if a given feature is supported or not. This function is unreliable and kept for compatibility purpose alone: except for SVG-related queries, it always returns <code>true</code>. Old browsers are very inconsistant in their behavior.</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('DOM WHATWG', '#domimplementation', 'DOMImplementation')}}</td>
      <td>{{Spec2('DOM WHATWG')}}</td>
      <td>Removed the <code>getFeature()</code> method.<br />
        Added the <code>createHTMLDocument()</code> method.<br />
        Modified the return type of <code>createDocument()</code> from {{domxref("Document")}} to {{domxref("XMLDocument")}}.</td>
    </tr>
    <tr>
      <td>{{SpecName('DOM3 Core', 'core.html#ID-102161490', 'DOMImplementation')}}</td>
      <td>{{Spec2('DOM3 Core')}}</td>
      <td>Added the <code>getFeature()</code> method (never implemented by any user agent).</td>
    </tr>
    <tr>
      <td>{{SpecName('DOM2 Core', 'core.html#ID-102161490', 'DOMImplementation')}}</td>
      <td>{{Spec2('DOM2 Core')}}</td>
      <td>Added the <code>createDocument()</code> and <code>createDocumentType()</code> methods.</td>
    </tr>
    <tr>
      <td>{{SpecName('DOM1', 'level-one-core.html#ID-102161490', 'DOMImplementation')}}</td>
      <td>{{Spec2('DOM1')}}</td>
      <td>Initial definition.</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>1.0</td>
        <td>{{CompatGeckoDesktop("1.0")}}</td>
        <td>6.0</td>
        <td>{{CompatVersionUnknown}}</td>
        <td>{{CompatVersionUnknown}}</td>
      </tr>
      <tr>
        <td><code>createHTMLDocument()</code></td>
        <td>{{CompatVersionUnknown}}</td>
        <td>{{CompatGeckoDesktop("2.0")}}</td>
        <td>9.0</td>
        <td>{{CompatVersionUnknown}}</td>
        <td>{{CompatVersionUnknown}}</td>
      </tr>
      <tr>
        <td><code>createDocument()</code></td>
        <td>{{CompatVersionUnknown}}</td>
        <td>{{CompatGeckoDesktop("1.0")}}</td>
        <td>9.0</td>
        <td>{{CompatVersionUnknown}}</td>
        <td>{{CompatVersionUnknown}}</td>
      </tr>
      <tr>
        <td><code>hasFeature()</code></td>
        <td>{{CompatVersionUnknown}}</td>
        <td>{{CompatGeckoDesktop("1.0")}} [1]</td>
        <td>6.0</td>
        <td>{{CompatVersionUnknown}}</td>
        <td>{{CompatVersionUnknown}}</td>
      </tr>
      <tr>
        <td><code>createDocumentType()</code></td>
        <td>{{CompatVersionUnknown}}</td>
        <td>{{CompatGeckoDesktop("1.0")}}</td>
        <td>9.0</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>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>{{CompatGeckoMobile("1.0")}}</td>
        <td>{{CompatVersionUnknown}}</td>
        <td>{{CompatVersionUnknown}}</td>
        <td>{{CompatVersionUnknown}}</td>
      </tr>
      <tr>
        <td><code>createHTMLDocument()</code></td>
        <td>{{CompatVersionUnknown}}</td>
        <td>{{CompatGeckoMobile("2.0")}}</td>
        <td>{{CompatVersionUnknown}}</td>
        <td>{{CompatVersionUnknown}}</td>
        <td>{{CompatVersionUnknown}}</td>
      </tr>
      <tr>
        <td><code>createDocument()</code></td>
        <td>{{CompatVersionUnknown}}</td>
        <td>{{CompatGeckoMobile("1.0")}}</td>
        <td>{{CompatVersionUnknown}}</td>
        <td>{{CompatVersionUnknown}}</td>
        <td>{{CompatVersionUnknown}}</td>
      </tr>
      <tr>
        <td><code>hasFeature()</code></td>
        <td>{{CompatVersionUnknown}}</td>
        <td>{{CompatGeckoMobile("1.0")}}</td>
        <td>{{CompatVersionUnknown}}</td>
        <td>{{CompatVersionUnknown}}</td>
        <td>{{CompatVersionUnknown}}</td>
      </tr>
      <tr>
        <td><code>createDocumentType()</code></td>
        <td>{{CompatVersionUnknown}}</td>
        <td>{{CompatGeckoMobile("1.0")}}</td>
        <td>{{CompatVersionUnknown}}</td>
        <td>{{CompatVersionUnknown}}</td>
        <td>{{CompatVersionUnknown}}</td>
      </tr>
    </tbody>
  </table>
</div>
<p>[1] Since Gecko 19, <code>hasFeature()</code> mostly returns <code>true</code>.</p>
<h2 id="See_also">See also</h2>
<ul>
  <li><a href="/en-US/docs/DOM/DOM_Reference" title="/en-US/docs/DOM/DOM_Reference">The DOM interfaces index.</a></li>
</ul>