title: How can this html submit a form?
body: <p>I have a form defined as</p>
  
  <pre><code>&lt;form class="edit_user" id="edit_user_7" action="/service-sign-up/user-agreement" accept-charset="UTF-8" method="post"&gt;
  </code></pre>
  
  <p>Much further beneath this on the same page there is the submit button:</p>
  
  <pre><code>&lt;a data-submit-form="true" data-form-id="account-details-form" class="btn btn-lg btn-grn" role="button" href="#"&gt;Next Step&lt;/a&gt;
  </code></pre>
  
  <p>This link (<code>&lt;a href="#"&gt;</code>) is not within the <code>&lt;form&gt;</code> element, it is at the very bottom of the page.</p>
  
  <p>How can the <code>&lt;a href="#" ...&gt;</code> element submit the form? Is this an AJAX call?</p>