title: submitting form with PJAX
body: <p>Im using PJAX in my web project, and when I submit my form, PJAX actually handling it, the related stuff is coming in and replacing in the PJAX container, but after that default action is happening- that is form is getting submitted in the traditional way and entire page is loading again</p>
  
  <p>form HTML is here</p>
  
  <pre><code>&lt;form  class="form_class"&gt;&lt;input type="text" name="search" id="search_query" class="basic_input" value="" /&gt;&lt;button onclick="this.form.submit();" &gt;Find&lt;/button&gt;&lt;/form&gt;
  </code></pre>
  
  <p>here is my pjax code for the form invoking</p>
  
  <pre><code>$(document).on('submit', '.form_class', function(event) {
            $.pjax.submit(event, '#container_id');
          });
  </code></pre>
  
  <p>it works- but the the default form submission too happens, I want the only PJAX way, I dont want the complete page reload(the traditional submission)</p>