jquery in select (views module) -- change submit click to link
The image above shows an exposed form generated by Views in the file views_plugin_exposed_form.inc.  Line 242 in the function exposed_form_alter reads       $form['#attached']['js'][] = drupal_get_path('module', 'ctools') . '/js/auto-submit.js'; so the js looks to be in ctools however, I believe that script is being called whenever a change is made on the form.  If you want to modify the form note that views is managing the form in this file. Selecting the 'Apply' button calls exposed_form_validate and exposed_form_submit which are tapping into the Drupal form API (php not JS). Go to api.drupal.org to find out more about the various hooks available to modify the forms