Drupal_add_js is not working inside hook submit

Question

I have alter and hook submit for webform. I would like to pop a modal if form is successfully submitted. But drupal_add_js seemed to be not working inside the hook submit.

function myModule_form_alter(&$form, &$form_state, $form_id) {

    if($form_id == 'webform_client_form_9') {
        $form['#submit'][] = 'myForm_submit';
    }

}

function myForm_submit($form, &$form_state) {
    drupal_add_js(drupal_get_path('module', 'myModule') . '/misc/custom.js');
}

Answer 1

You should do this with #attached.

Like,

if (!empty($form_state['values'])) {
  $form['#attached']['css'] = array(
    drupal_get_path('module', 'ajax_example') . '/ajax_example.css',
  );
  $form['#attached']['js'] = array(
    drupal_get_path('module', 'ajax_example') . '/ajax_example.js',
  );
}

Answer 2

Aneek Mukhopadhyay is on the right track but if you need it only for submit you should add the code inside an IF statement:

if( isset($form_state["values"]) ) {
  $form['#attached']['css'] = array(
    drupal_get_path('module', 'ajax_example') . '/ajax_example.css',
  );
  $form['#attached']['js'] = array(
    drupal_get_path('module', 'ajax_example') . '/ajax_example.js',
  );
}

Hope it helps.

Answer 3

I think so a javascript file is added when a page loads.In this case page loads after hook_submit gets called.Why dont you try to add the js the time a page loads in hook_init and try.

Thanks, Keep calm and clear the cache.