How to call ajax in wordpress

Question

My ajax call output is always showing 0 as output don\'t know why

In functions.php I have this code

function get_data() {
    $abc = \'         


        

Answer 1

Step 1: Add ajax 'wp_enqueue_script' file in function file where you have to add other 'wp_enqueue_script' or 'wp_enqueue_style' files

wp_enqueue_script( 'ajax-script', get_template_directory_uri() . '/js/my-ajax- script.js', array('jquery') );
    wp_localize_script( 'ajax-script', 'my_ajax_object', array( 'ajax_url' => admin_url( 'admin-ajax.php' ) ) );

Step 2:Now you need to to create function, where you want to get response,using ajax e.g below

 add_action('wp_footer','add_ajaxex_in_footer');
   function add_ajaxex_in_footer()
    { ?>

Step 3: Now you have to create function where you have to write query,

add_action('wp_ajax_my_special_ajax_call_enroll_cours', 'enroll_cours');
add_action('wp_ajax_nopriv_my_special_ajax_call_enroll_cours', 'enroll_cours');

 function enroll_cours()
  { 
      echo "Here you van write Query or anything"; 
   }
exit;
}

=> If you want fire ajax request after onClick button,just pass the button ID