title: Show jQuery UI validation in tooltip
body: <p>As soon I've started using MVC I couldn't realize how to display correct error validation in a tooltip.</p>
  
  <p>For an instance:</p>
  
  <pre><code>$(document).tooltip({
       items: ".input-validation-error",
       content: function() {
             return $(this).attr('data-val-required');
       }
  });
  </code></pre>
  
  <p>It shows just "data-val-required" message. How can I make it dynamically to show the correct error that has occured? There's any libray/framework in JS to implement it?</p>