title: prop('disabled', false); is not working
body: <p>I want to make a button that will be disable when checkbox is false. But <code>prop('disabled', false);</code> isn't working.</p>
  
  <p><div class="snippet" data-lang="js" data-hide="false" data-console="true" data-babel="false">
  <div class="snippet-code">
  <pre class="snippet-code-js lang-js prettyprint-override"><code>$(function() {
      $(this).click(function() {
          if ($('#аgree').prop(':checked')) {
              $('#button').prop('disabled', false);
          } else {
              $('#button').prop('disabled', true);
          }
      });
  });</code></pre>
  <pre class="snippet-code-html lang-html prettyprint-override"><code>&lt;script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"&gt;&lt;/script&gt;
  &lt;p class="text-center"&gt;З правилами анкетування ознайомлений(а) і згоден(на) @Html.CheckBox("Agree", false, new { id = "agree" }) &lt;/p&gt;
  &lt;p class="text-center"&gt;&lt;input type="button" id="button" disabled="disabled" value="Пройти анкетування" onclick="location.href='@Url.Action("Form")'" /&gt;&lt;/p&gt;</code></pre>
  </div>
  </div>
  </p>