title: Can an HTML element have multiple ids?
body: <p>I understand that an id must be unique within an HTML/XHTML page.</p>
  <p>For a given element, can I assign multiple ids to it?</p>
  <pre><code>&lt;div id=&quot;nested_element_123 task_123&quot;&gt;&lt;/div&gt;
  </code></pre>
  <p>I realize I have an easy solution with simply using a class. I'm just curious about using ids in this manner.</p>