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); } });
Try to add die(); or exit(); at the very last line of the function.
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. :)
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.