Ajax : Why success displays 0?

Question

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

success : function(results) { 
alert(result         


        

Answer 1

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.