title: Editable Combo Box Javascript and HTML
body: <p>I need to do the following thing:
  Using <strong>JavaScript</strong>, the <strong>HTML input tag</strong> having the text type and a <strong>select tag</strong> (combo box), create an editable combo box.</p>
  
  <p>I have no idea how to make a combo box editable. Can you give me some suggestions, please?</p>
  
  <p>I create the combo box like this, but is obviously not editable:</p>
  
  <pre><code>&lt;html&gt;
      &lt;label&gt;Your preferred programming language: &lt;/label&gt;
      &lt;select id="combobox"&gt;
          &lt;option value=""&gt;Select one...&lt;/option&gt;
          &lt;option value="ActionScript"&gt;ActionScript&lt;/option&gt;
          &lt;option value="AppleScript"&gt;AppleScript&lt;/option&gt;
      &lt;/select&gt;
  &lt;/html&gt;
  </code></pre>
  
  <p>Where should I use the input tag?</p>