title: Attribute title change with jQuery toggle
body: <p>I can change value with my code. I want to change attribute value jQuery toggle  when click <code>data-original-title</code> <code>test-1</code>  change to <code>test-2</code>.  How can I do that?</p>
  
  <pre><code>&lt;i class="heart fa fa-heart" id="demo1" data-toggle="tooltip" data-placement="top" title="" data-original-title="test-1"&gt;&lt;/i&gt;
  
  $("#demo1").click(function() {
    $(this).attr("data-original-title", "test-2");
  }
  </code></pre>