forgot a pair of buttons

javascript.html

@@ -1208,7 +1208,8 @@ <h2 id="alerts-examples">Example alerts</h2>
         <h4>Oh snap! You got an error!</h4>
         <p>Change this and that and try again. Duis mollis, est non commodo luctus, nisi erat porttitor ligula, eget lacinia odio sem nec elit. Cras mattis consectetur purus sit amet fermentum.</p>
         <p>
-          <a class="btn btn-danger" href="#">Take this action</a> <a class="btn btn-default" href="#">Or do this</a>
+          <button type="button" class="btn btn-danger">Take this action</button>
+          <button type="button" class="btn btn-default">Or do this</button>
         </p>
       </div>
     </div><!-- /example -->