View difference between Paste ID: YTQ9mRKb and YkKN63se

 <form action='/my_path/' method='GET'>
   <div class='aclass'>
     <input type='text' size='50' placeholder='Type something' />
     <button type='submit'>Click me</button>
   </div>
 </form>
 
 <script>
   function success(data, textStatus, jqXHR)
   {
     alert('DEBUG: success');
   }
 
   function error(jqXHR, textStatus, errorThrown)
   {
     alert('DEBUG: error');
   }
 
   jQuery.fn.ajaxify = function(selector, success, error)
   {
     if (arguments.length === 2)
     {
       error = success;
       success = selector;
       selector = undefined;
     }
 
     return this.on('submit', function(e)
     {
       // Copy the options from the '<form />' control.
       jQuery.ajax({
         url: this.target,
         method: this.method || 'GET',
         data: '{SomeJSON: ' + (typeof selector === 'undefined' ? $(this).serialize() : $(this).find(selector).serialize()) + '}'
-      }).done(jQuery.proxy(this, success)).fail(jQuery.proxy(this, error));
+      }).done(jQuery.proxy(success, this).fail(jQuery.proxy(error, this));
 
       e.preventDefault();
     });
   };
 
   jQuery(document).ready(function()
   {
-    jQuery('.button').click(function()
+    jQuery('form').ajaxify('input', success, error);
   });
-      jQuery.fn.ajaxify('input', success, error);
+