Ajax : Why success displays 0?

4 Views

I use ajax with jquery and when I tried to display the result in popup.
Then alert always displays 0 

success : function(results) { 
alert(results); }

EDIT : 

 var dataToSend = {
    action:"ACTION_NAME",
    id : "12"
  };
  url_action = 'http://www.______.com/wp-admin/admin-ajax.php';
  $.ajax({
          url: url_action,
          type:'POST',
          data: dataToSend,
          success:function(results)
          {
             alert(results);
          }
   });
Post Views: 4

Related posts

Leave a Reply

11 comments

  2. May be you are trying without login. so you need to use this action.

    add_action(‘wp_ajax_nopriv_my_action’, ‘my_action_callback’);

    you will get response. 🙂

  3. I had a similar issue with admin-ajax.php returning 0, even i had die().

    My problem was that the add_action was declared in a file not loaded default by plugin.

    Anyway, if you have problem also check in browser what __.com/wp-admin/admin-ajax.php?action=youraction returns.

  4. Found it.

    It need to add die(); before the end of my own ajax function in function.php.

    Because there is one line of script in admin-ajax.php after my own ajax_action that says: die(‘0’); So we need to die() script before die(‘0’).

  5. I was adding the “action” incorrectly. You have to prefix your action with wp_ajax_gd_.

    add_action('wp_ajax_gd_[ACTION NAME]', '[CALLBACK FUNCTION NAME]')

    and in the JS jQuery post:

    var data = {
    'action': '[ACTION NAME]',
};

    I found WordPress’ documentation very unclear about this part.

  8. In your PHP function, make sure you’re using echo instead of return.

    This was happening for me in a WordPress theme.

    function doAjax() {
    $result = getPosts();
    echo json_encode($result, true);
    die();
}

  11. Those who get error 0 :), action => ‘action’

    var data = {'action': 'my_action', 'data': form_data };

$.post(ajaxurl, data, function(response) { alert(response);});