Revision 469719 of HTMLIsIndexElement

<p>{{ DomRef() }}{{obsolete_header}}</p>
<p>The <strong><code>HTMLIsIndexElement</code></strong> interface provides special properties (beyond the regular {{domxref("HTMLElement")}} interface it also has available to it by inheritance) for manipulating {{HTMLElement("isindex")}} elements.</p>
<p>The <code>&lt;isindex&gt;</code> element has been deprecated in HTML4 and removed in HTML5. This latest specification requires that this element implements {{domxref("HTMLUnknownElement")}} rather than <code>HTMLIsIndexElement</code>.</p>
<h2 id="Properties">Properties</h2>
<p><em>Inherits properties from its parent, {{domxref("HTMLElement")}}.</em></p>
<dl>
  <dt>
    <code>HTMLBaseFontElement.form</code> {{readonlyInline}}</dt>
  <dd>
    Is a {{domxref("HTMLFormElement")}} representing the {{HTMLElement("form")}} element it belongs too. It can have the <code>null</code> value, if <code>&lt;isindex&gt;</code> isn't part of any form.</dd>
  <dt>
    <code>HTMLBaseFontElement.prompt</code></dt>
  <dd>
    Is a {{domxref("DOMString")}} representing a text to be prompted for the field.</dd>
</dl>
<h2 id="Methods" name="Methods">Methods</h2>
<p><em>No specific method; inherits methods from its parent, {{domxref("HTMLElement")}}.</em></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('HTML WHATWG', "obsolete.html#isindex-0", "HTMLIsIndexElement")}}</td>
      <td>{{Spec2('HTML WHATWG')}}</td>
      <td>No change from {{SpecName("HTML5 W3C")}}.</td>
    </tr>
    <tr>
      <td>{{SpecName('HTML5 W3C', "obsolete.html#isindex-0", "HTMLIsIndexElement")}}</td>
      <td>{{Spec2('HTML5 W3C')}}</td>
      <td>Removed. {{HTMLElement("isindex")}} must now implement {{domxref("HTMLUnknownElement")}}.</td>
    </tr>
    <tr>
      <td>{{SpecName('DOM2 HTML', "html.html#ID-85283003", "HTMLIsIndexElement")}}</td>
      <td>{{Spec2('DOM2 HTML')}}</td>
      <td>No change from {{SpecName('DOM1')}}</td>
    </tr>
    <tr>
      <td>{{SpecName('DOM1', "level-one-html.html#ID-85283003", "HTMLIsIndexElement")}}</td>
      <td>{{Spec2('DOM1')}}</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>Opera</th>
        <th>Safari (WebKit)</th>
      </tr>
      <tr>
        <td>Basic support</td>
        <td>{{CompatUnknown}}</td>
        <td>{{CompatUnknown}}</td>
        <td>{{CompatUnknown}}</td>
        <td>{{CompatUnknown}}</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>Firefox Mobile (Gecko)</th>
        <th>IE Phone</th>
        <th>Opera Mobile</th>
        <th>Safari Mobile</th>
      </tr>
      <tr>
        <td>Basic support</td>
        <td>{{CompatUnknown}}</td>
        <td>{{CompatUnknown}}</td>
        <td>{{CompatUnknown}}</td>
        <td>{{CompatUnknown}}</td>
        <td>{{CompatUnknown}}</td>
      </tr>
    </tbody>
  </table>
</div>
<h2 id="See_also">See also</h2>
<ul>
  <li>The HTML element {{HTMLElement("isindex")}} <em>was</em> implementing this interface.</li>
</ul>